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2D ferroelectric materials: Emerging paradigms for next-generation ferroelectronics 二维铁电材料:新一代铁电子学的新兴范例
Materials Today Electronics Pub Date : 2023-12-01 DOI: 10.1016/j.mtelec.2023.100080
Weijun Wang , You Meng , Wei Wang , Yuxuan Zhang , Bowen Li , Yan Yan , Boxiang Gao , Johnny C. Ho
{"title":"2D ferroelectric materials: Emerging paradigms for next-generation ferroelectronics","authors":"Weijun Wang ,&nbsp;You Meng ,&nbsp;Wei Wang ,&nbsp;Yuxuan Zhang ,&nbsp;Bowen Li ,&nbsp;Yan Yan ,&nbsp;Boxiang Gao ,&nbsp;Johnny C. Ho","doi":"10.1016/j.mtelec.2023.100080","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100080","url":null,"abstract":"<div><p>Ferroelectric materials with electrically switchable spontaneous polarization are technologically important for developing next-generation low-power nanoelectronics and ferroelectronics. Regardless of significant challenges for rich functionalities owing to the insulating nature of conventional thin-film ferroelectrics, ferroelectricity instability or disappearance below a critical thickness limit generally exists. Therefore, exploring emerging two-dimensional (2D) ferroelectric materials with nanoscale dimensions and moderate bandgaps is crucial for developing high-integration functional nanoelectronics. This review offers a comprehensive analysis of the historical background and progression in both thin-film ferroelectrics and novel 2D ferroelectrics. Special attention is given to the device applications based on the emerging 2D ferroelectrics, in which the polarization switching process occurs within the channel material itself. Leveraging the switchable polarization in nanoscale 2D ferroelectrics, rationally designed device configurations with intriguing working mechanisms have been rapidly developed in various application scenarios, such as gate-tunable memristors, non-volatile memories, biological synapses, in-memory computing, etc. This review also sheds light on the potential opportunities and challenges in the future advancement of integrating novel 2D ferroelectric materials into devices within commercial electronic circuits.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100080"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000566/pdfft?md5=b737cea17bfb1c015ad8b359a95eeddc&pid=1-s2.0-S2772949423000566-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138466414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bendable & twistable oxide-polymer based hybrid electrochromic device: Flexible and multi-wavelength color modulation 基于氧化物-聚合物的可弯曲和可扭曲混合电致变色器件:灵活的多波长色彩调制
Materials Today Electronics Pub Date : 2023-11-24 DOI: 10.1016/j.mtelec.2023.100082
Bhumika Sahu , Love Bansal , Deb Kumar Rath , Suchita Kandpal , Tanushree Ghosh , Nikita Ahlawat , Chanchal Rani , Maxim Yu Maximov , Rajesh Kumar
{"title":"Bendable & twistable oxide-polymer based hybrid electrochromic device: Flexible and multi-wavelength color modulation","authors":"Bhumika Sahu ,&nbsp;Love Bansal ,&nbsp;Deb Kumar Rath ,&nbsp;Suchita Kandpal ,&nbsp;Tanushree Ghosh ,&nbsp;Nikita Ahlawat ,&nbsp;Chanchal Rani ,&nbsp;Maxim Yu Maximov ,&nbsp;Rajesh Kumar","doi":"10.1016/j.mtelec.2023.100082","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100082","url":null,"abstract":"<div><p>Flexible electrochromic (EC) technology has made huge progress in electronic industry for their applications in flexible displays, e-papers, e-curtains etc. The performance of device is the main concern while fabricating a flexible electrochromic device. In this paper, a solid state flexible electrochromic device (flex-ECD) has been demonstrated by combining the excellent EC performance of organic polymer and excellent stability of metal oxides which exhibits fast color switching and excellent stability after bending and twisting it for several times. For the fabrication of device, first Co<sub>3</sub>O<sub>4</sub> and WO<sub>3</sub> powders have been synthesised and utilised as dopants in the two electrochromic active materials namely polythiophene (P3HT) and ethyl viologen (EV), respectively. Due to the doping of these nanomaterials the performance of the flex-ECD has been enhanced as measured in terms of coloration efficiency, switching time and stability. Additionally, the device shows color switching in their different wavelength regions between visible and NIR. The flex-ECD shows high stability with a few seconds of switching time and high coloration efficiency of 420 cm<sup>2</sup>/C. The device was first bent and subsequently twisted for several more times. After bending, the performance has been checked, exhibiting minimal change in switching time at 515 nm and 665 nm without compromising the coloration efficiency much. The device shows excellent stability after bending and twisting moments making it a good design for future wearable electronics.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"7 ","pages":"Article 100082"},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277294942300058X/pdfft?md5=08326e62a4acf288a441e6e23282c29b&pid=1-s2.0-S277294942300058X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138548980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compositional engineering of magnetic anisotropy in Cr2SixGe2-xTe6 Cr2SixGe2-xTe6 中磁性各向异性的成分工程学
Materials Today Electronics Pub Date : 2023-11-22 DOI: 10.1016/j.mtelec.2023.100081
Ti Xie , Shanchuan Liang , Samuel Deitemyer , Qinqin Wang , Tong Zhou , Igor Žutić , Xixiang Zhang , Dongsheng Yuan , Xiang Zhang , Cheng Gong
{"title":"Compositional engineering of magnetic anisotropy in Cr2SixGe2-xTe6","authors":"Ti Xie ,&nbsp;Shanchuan Liang ,&nbsp;Samuel Deitemyer ,&nbsp;Qinqin Wang ,&nbsp;Tong Zhou ,&nbsp;Igor Žutić ,&nbsp;Xixiang Zhang ,&nbsp;Dongsheng Yuan ,&nbsp;Xiang Zhang ,&nbsp;Cheng Gong","doi":"10.1016/j.mtelec.2023.100081","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100081","url":null,"abstract":"<div><p>Magnetic van der Waals (vdW) materials are highly sensitive to their chemical compositions and atomic structures, which presents rich opportunities for synthetic control of vdW ferromagnets. Here, we synthesized the quaternary alloys Cr<sub>2</sub>Si<em><sub>x</sub></em>Ge<sub>2-</sub><em><sub>x</sub></em>Te<sub>6</sub> using the flux method and discovered that the Ge:Si source ratio should be designed deliberately higher than the expected in resultant crystals due to the stronger affinity of Si than Ge to be involved in Cr<sub>2</sub>Si<em><sub>x</sub></em>Ge<sub>2-</sub><em><sub>x</sub></em>Te<sub>6</sub> reactions. Temperature-dependent magnetization and magnetic hysteresis measurements revealed that as the Si content increases, the Curie temperature decreases while the out-of-plane anisotropy increases monotonically. When <em>x</em> increases from 0 to 2 in Cr<sub>2</sub>Si<em><sub>x</sub></em>Ge<sub>2-</sub><em><sub>x</sub></em>Te<sub>6</sub>, the out-of-plane saturation fields remain approximately unchanged at ∼0.2 T, while the in-plane saturation fields increase monotonically from 0.5 T to 1.2 T. The distinct behaviors between out-of-plane and in-plane saturation fields arise from the different mechanisms underpinning the two fields – the out-of-plane saturation field is determined by the competition of exchange interaction, magnetic anisotropy, and dipolar interaction, whereas the in-plane saturation field by magnetic anisotropy. Our compositional engineering provides a fundamental understanding of the layered magnetic materials and insightful guidance for the future design of vdW magnets.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"7 ","pages":"Article 100081"},"PeriodicalIF":0.0,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000578/pdfft?md5=9916b5c3d26e737c4d314ddfa3e91aa0&pid=1-s2.0-S2772949423000578-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient sky-blue perovskite light-emitting diodes enabled by buried guanidine passivation 高效的天蓝色钙钛矿发光二极管,通过埋藏的胍钝化实现
Materials Today Electronics Pub Date : 2023-11-21 DOI: 10.1016/j.mtelec.2023.100079
Yushuai Xu , Zixun Tang , Yuhang Guo , Zexu Li , Qian Wang , Zhiyuan Xie
{"title":"Efficient sky-blue perovskite light-emitting diodes enabled by buried guanidine passivation","authors":"Yushuai Xu ,&nbsp;Zixun Tang ,&nbsp;Yuhang Guo ,&nbsp;Zexu Li ,&nbsp;Qian Wang ,&nbsp;Zhiyuan Xie","doi":"10.1016/j.mtelec.2023.100079","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100079","url":null,"abstract":"<div><p>The light-emitting efficiencies of blue perovskite light-emitting diodes (PeLEDs) based on quasi-two-dimensional (quasi-2D) halide perovskite emissive layers still lag behind in comparison to their green and red counterparts. The buried interfaces strongly affect the properties of upper solution-processed quasi-2D halide perovskites and the resultant PeLEDs. Herein, it is proposed to passivate the defects of blue quasi-2D perovskites at the buried interfaces by modifying the poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) hole-transport layer (HTL) with 4-guanidinobutyric acid (GBA). The GBA-modified PEDOT:PSS can help to passivate the defects of blue quasi-2D perovskites at the buried interfaces through the interaction between the amine groups of GBA and lead ions and enhance the ratios of halide ions and 4-fluorophenylethylammonium bromide to lead ions. Owing to the reduced halogen vacancies and the passivated defects at the buried interfaces, the blue quasi-2D perovskites prepared on the GBA-modified PEDOT:PSS HTL lead to an increased photoluminescence quantum yield (PLQY) of 60.8 %. The corresponding sky blue PeLEDs achieve a maximum light-emitting quantum efficiency of 9.41 % with an emission peak at 488 nm. This work contributes to enhancing the light-emitting performance of blue PeLEDs through the buried interface passivation point of view.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100079"},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000554/pdfft?md5=b722e01e9d530fedf95ed00d8b128b6d&pid=1-s2.0-S2772949423000554-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138439362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Excess of oxygen in thermodynamically unstable H2MoO5 enables high-performance all solid-state supercapacitors 在热力学不稳定的H2MoO5中过量的氧气使高性能的全固态超级电容器成为可能
Materials Today Electronics Pub Date : 2023-11-13 DOI: 10.1016/j.mtelec.2023.100078
Chhail Bihari Soni, Sungjemmenla, Vipin Kumar
{"title":"Excess of oxygen in thermodynamically unstable H2MoO5 enables high-performance all solid-state supercapacitors","authors":"Chhail Bihari Soni,&nbsp;Sungjemmenla,&nbsp;Vipin Kumar","doi":"10.1016/j.mtelec.2023.100078","DOIUrl":"10.1016/j.mtelec.2023.100078","url":null,"abstract":"<div><p>Pseudocapacitors with oxygen-enriched vacancies have been the state-of-the-art surface chemistry to invoke various intrinsic mechanisms. Nevertheless, the electrochemical behavior of vacancies-induced properties of MoO<sub>3</sub> is still under debate. In this work, we report an oxygen-enriched polymorph of molybdenum trioxide (MoO<sub>3</sub>), i.e., H<sub>2</sub>MoO<sub>5</sub>, which is a thermodynamically unstable phase of MoO<sub>3</sub> with aliovalent oxygen ions (O<sub>2</sub><sup>2-</sup> and O<sub>2</sub><sup>-</sup>), to achieve a higher amount of pseudocapacitance compared to its thermodynamically stable phase (alpha-MoO<sub>3</sub>). Mott-Schottky analysis identified a higher proportion of oxygen vacancies in H<sub>2</sub>MoO<sub>5</sub> compared to MoO<sub>3</sub>. A symmetric supercapacitor of H<sub>2</sub>MoO<sub>5</sub> with PVA/H<sub>2</sub>SO<sub>4</sub> displayed a high charge storage of 46.54 F/g at a current density of 0.5 A/g, maintaining a remarkable cycle life of up to 6000 cycles. Furthermore, the oxygen-enriched cell could deliver a high-power density of 470 W/kg at a higher energy density of 22.8472 Wh/kg. The ability to tune oxygen vacancies in metal oxide systems opens a new platform to enhance pseudocapactive character without compromising the energy density.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100078"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000542/pdfft?md5=d2dd5bfa8e13a59d0226b69a6e784952&pid=1-s2.0-S2772949423000542-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135714985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Berry curvature dipole and its strain engineering in layered phosphorene 层状磷烯中的Berry曲率偶极子及其应变工程
Materials Today Electronics Pub Date : 2023-11-08 DOI: 10.1016/j.mtelec.2023.100076
Arka Bandyopadhyay, Nesta Benno Joseph, Awadhesh Narayan
{"title":"Berry curvature dipole and its strain engineering in layered phosphorene","authors":"Arka Bandyopadhyay,&nbsp;Nesta Benno Joseph,&nbsp;Awadhesh Narayan","doi":"10.1016/j.mtelec.2023.100076","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100076","url":null,"abstract":"<div><p>The emergence of the fascinating non-linear Hall effect intrinsically depends on the non-zero value of the Berry curvature dipole. In this work, we predict that suitable strain engineering in layered van der Waals material phosphorene can give rise to a significantly large Berry curvature dipole. Using symmetry design principles, and a combination of feasible strain and staggered on-site potentials, we show how a substantial Berry curvature dipole may be engineered at the Fermi level. We discover that monolayer phosphorene exhibits the most intense Berry curvature dipole peak near 11.8% strain, which is also a critical point for the topological phase transition in pristine phosphorene. Furthermore, we have shown that the necessary strain value to achieve substantial Berry curvature dipole can be reduced by increasing the number of layers. We have revealed that strain in these van der Waals systems not only alters the magnitude of Berry curvature dipole to a significant value but allows control over its sign. We are hopeful that our predictions will pave way to realize the non-linear Hall effect in such elemental van der Waals systems.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100076"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000529/pdfft?md5=aca67ea85c1038cd42f6c28d80c3cc62&pid=1-s2.0-S2772949423000529-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92101473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Charge transport in organic field-effect transistors 有机场效应晶体管中的电荷输运
Materials Today Electronics Pub Date : 2023-11-05 DOI: 10.1016/j.mtelec.2023.100077
Xu Chen , Jianhang Guo , Lichao Peng , Qijing Wang , Sai Jiang , Yun Li
{"title":"Charge transport in organic field-effect transistors","authors":"Xu Chen ,&nbsp;Jianhang Guo ,&nbsp;Lichao Peng ,&nbsp;Qijing Wang ,&nbsp;Sai Jiang ,&nbsp;Yun Li","doi":"10.1016/j.mtelec.2023.100077","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100077","url":null,"abstract":"<div><p>Understanding the charge transport physics is crucial for improving organic field-effect transistors (OFETs) performance. Diverse mobility behaviour has been discovered and numerous theories have been established to explain the nature of charge transport in OFETs. In this review, the theories are divided into three groups, band-like theories, transient localization models, and hopping transport. The relationship between structural properties and intrinsic charge transport physics will be discussed. The fundamental assumptions and theoretical framework of these models will be introduced and their advantages and limits when describing charge transport in OFETs are also discussed based on recent experimental observations. Band-like theory is more applicable to highly-ordered single crystals while hopping models concentrate on disordered materials. Newly developed transient localization theories emphasize the importance of thermal fluctuations, which hopping theories and band-like models fail to include, attributed to weak van der Waals interactions. We integrate and summarize these theories to provide a more sophisticated understanding and more universal descriptions of the charge transport process to guide further developments and potential applications of OFETs.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100077"},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000530/pdfft?md5=660e7789851c14036b76337ea4c9a2fd&pid=1-s2.0-S2772949423000530-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134657770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Layer-dependent electronic and magnetic properties of two-dimensional graphitic molybdenum carbide 二维石墨碳化钼的层相关电子和磁性能
Materials Today Electronics Pub Date : 2023-11-01 DOI: 10.1016/j.mtelec.2023.100073
Hao Wang , Yongjie Zhang , Kah Meng Yam , Xinghui Tang , Xue-Sen Wang , Chun Zhang
{"title":"Layer-dependent electronic and magnetic properties of two-dimensional graphitic molybdenum carbide","authors":"Hao Wang ,&nbsp;Yongjie Zhang ,&nbsp;Kah Meng Yam ,&nbsp;Xinghui Tang ,&nbsp;Xue-Sen Wang ,&nbsp;Chun Zhang","doi":"10.1016/j.mtelec.2023.100073","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100073","url":null,"abstract":"<div><p>Intrinsic magnetic two-dimensional (2D) materials with high critical temperature are highly desired in advanced spintronics applications. Via first-principles calculations, we firstly predict that two-dimensional molybdenum carbide (with a chemical formula of Mo<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>C<sub>12</sub>) monolayer is a highly stable antiferromagnetic (AFM) semiconductor with a band gap around 1 eV and a high Néel temperature of 420 K. We then show that the multilayer (Mo<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>C<sub>12</sub>)<span><math><msub><mrow></mrow><mrow><mi>n</mi></mrow></msub></math></span>, where <span><math><mi>n</mi></math></span> is the number of layers, exhibits interesting electronic and magnetic properties that are sensitively dependent on the number of layers. The stability of the AFM configuration and the energy gap rapidly decrease with the number of layers. When <span><math><mrow><mi>n</mi><mo>≤</mo><mn>5</mn></mrow></math></span>, (Mo<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>C<sub>12</sub>)<span><math><msub><mrow></mrow><mrow><mi>n</mi></mrow></msub></math></span> remains AFM, while magnetic moments are mainly located on surface Mo atoms, and Mo atoms on top and bottom surfaces have opposite spin polarizations. When <span><math><mrow><mi>n</mi><mo>&gt;</mo><mn>5</mn></mrow></math></span>, the AFM phase is unstable and the material becomes metallic. These layer-tunable properties make (Mo<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>C<sub>12</sub>)<span><math><msub><mrow></mrow><mrow><mi>n</mi></mrow></msub></math></span> potentially useful for various electronics and spintronics applications. As one example, an intriguing (Mo<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>C<sub>12</sub>)<span><math><msub><mrow></mrow><mrow><mn>5</mn></mrow></msub></math></span> based magnetic metal–semiconductor–metal heterojunction is proposed in this work.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100073"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000499/pdfft?md5=0a766b793b70ec6bb5178be793166cff&pid=1-s2.0-S2772949423000499-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92101475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strain engineering of magnetic exchange and topological magnons in chromium trihalides from first-principles 三卤化铬中磁交换和拓扑磁振子的第一性原理应变工程
Materials Today Electronics Pub Date : 2023-10-29 DOI: 10.1016/j.mtelec.2023.100072
Dorye L. Esteras, José J. Baldoví
{"title":"Strain engineering of magnetic exchange and topological magnons in chromium trihalides from first-principles","authors":"Dorye L. Esteras,&nbsp;José J. Baldoví","doi":"10.1016/j.mtelec.2023.100072","DOIUrl":"https://doi.org/10.1016/j.mtelec.2023.100072","url":null,"abstract":"<div><p>Recent experiments evidence the direct observation of spin waves in chromium trihalides and the presence of a gap at the Dirac points of the magnon dispersion in bulk CrI<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>. However, the topological origin of this feature remains unclear and its emergence at the 2D limit has not yet been proven experimentally. Herein, we perform a fully self-consistent ab initio analysis to deeply understand magnetic exchange of chromium trihalides in the 2D limit. We compute the orbital dependent magnetic interactions and Curie temperatures under applied biaxial strain. Our results confirm the existence of a gap around the K high-symmetry point in the linear magnon dispersion of CrI<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>, which originates as a direct consequence of intralayer Dzyaloshinskii–Moriya (DM) interaction. In addition, our orbital resolved analysis reveals the microscopic mechanisms that can be exploited using strain engineering to increase the strength of the DM interaction and thus control the topological gap width in CrI<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>. This paves the way to the further development of this family of materials as building-blocks for topological magnonics at the limit of miniaturization.</p></div>","PeriodicalId":100893,"journal":{"name":"Materials Today Electronics","volume":"6 ","pages":"Article 100072"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772949423000487/pdfft?md5=566323c064a6493c543d753f7d86160f&pid=1-s2.0-S2772949423000487-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92101474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Brief Status of Flexible Bi-functional Energy Storage Electrochromic Devices 柔性双功能储能电致变色器件的研究现状
Materials Today Electronics Pub Date : 2023-10-26 DOI: 10.1016/j.mtelec.2023.100075
Anjali Chaudhary
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