Advanced Physics Research最新文献_第9页

Masthead (Adv. Phys. Res. 7/2024) 刊头 (Adv. Phys. Res. 7/2024)

Advanced Physics Research Pub Date : 2024-07-12 DOI: 10.1002/apxr.202470017

引用次数: 0

Anomalous Tunneling Magnetoresistance Oscillation and Electrically Tunable Tunneling Anisotropic Magnetoresistance in Few-Layer CrPS4 少层CrPS4中的反常隧道磁阻振荡和电可调谐隧道各向异性磁阻

Advanced Physics Research Pub Date : 2024-07-11 DOI: 10.1002/apxr.202400052

ZhuangEn Fu, Hong-Fei Huang, Piumi Samarawickrama, Kenji Watanabe, Takashi Taniguchi, Wenyong Wang, John Ackerman, Jiadong Zang, Jie-Xiang Yu, Jifa Tian

{"title":"Anomalous Tunneling Magnetoresistance Oscillation and Electrically Tunable Tunneling Anisotropic Magnetoresistance in Few-Layer CrPS4","authors":"ZhuangEn Fu, Hong-Fei Huang, Piumi Samarawickrama, Kenji Watanabe, Takashi Taniguchi, Wenyong Wang, John Ackerman, Jiadong Zang, Jie-Xiang Yu, Jifa Tian","doi":"10.1002/apxr.202400052","DOIUrl":"10.1002/apxr.202400052","url":null,"abstract":"2D van der Waals (vdW) magnets with layer-dependent magnetic states and/or diverse magnetic interactions and anisotropies have attracted extensive research interest. Despite the advances, a notable challenge persists in effectively manipulating the tunneling anisotropic magnetoresistance (TAMR) of 2D vdW magnet-based magnetic tunnel junctions (MTJs). Here, this study reports the novel and anomalous tunneling magnetoresistance (TMR) oscillations and pioneering demonstration of bias and gate voltage controllable TAMR in 2D vdW MTJs, utilizing few-layer CrPS4. This material, inherently an antiferromagnet, transitions to a canted magnetic order upon application of external magnetic fields. Through TMR measurements, this work unveils the novel layer-dependent oscillations in the tunneling resistance for few-layer CrPS4 devices under both out-of-plane and in-plane magnetic fields, with a pronounced controllability via gate voltage. Intriguingly, this study demonstrates that both the polarity and magnitude of TAMR in CrPS4 can be effectively tuned through either a bias or gate voltage. The mechanism behind this electrically tunable TAMR is further elucidated through first-principles calculations. The implications of the findings are far-reaching, providing new insights into 2D magnetism and opening avenues for the development of innovative spintronic devices based on 2D vdW magnets.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657082","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

Memristive Thermal Radiator by Highly Tunable Graphene Plasmon 利用高度可调谐石墨烯等离子体的薄膜散热器

Advanced Physics Research Pub Date : 2024-07-10 DOI: 10.1002/apxr.202300144

Junhao Ge, Jibo Tang, Yu Wu, Shunping Zhang, Hongxing Xu

引用次数: 0

High-Speed and Long-Distance Spin-Wave Propagation in Spinel γ-Fe2O3 Epitaxial Thin Films 尖晶石 γ-Fe2O3 外延薄膜中的高速长距离自旋波传播

Advanced Physics Research Pub Date : 2024-07-08 DOI: 10.1002/apxr.202400066

Siyi Tang, Lihao Yao, Md Shamim Sarker, Zhiqiang Liao, Kaijie Ma, Hiroyasu Yamahara, Hitoshi Tabata, Munetoshi Seki

{"title":"High-Speed and Long-Distance Spin-Wave Propagation in Spinel γ-Fe2O3 Epitaxial Thin Films","authors":"Siyi Tang, Lihao Yao, Md Shamim Sarker, Zhiqiang Liao, Kaijie Ma, Hiroyasu Yamahara, Hitoshi Tabata, Munetoshi Seki","doi":"10.1002/apxr.202400066","DOIUrl":"10.1002/apxr.202400066","url":null,"abstract":"In spin wave (SW) devices, the modulation of SWs for computational units is necessary, imposing extremely high demands on material systems. In this study, high-quality epitaxial-grown spinel γ-Fe2O3 thin films on conductive Nb-doped SrTiO3 substrates, achieving fast-speed, high-frequency, and long-distance SW propagation in this ferrimagnetic material, are developed. A novel two-step film growth technique using pulsed laser deposition is proposed and optimized, and the damping constant, exchange stiffness, and anisotropies of γ-Fe2O3 are determined. Compared to reported semiconductor magnetic materials, these epitaxial-grown γ-Fe2O3 thin films exhibit a significantly lower damping constant of 10−2, representing a substantial advancement. Using finite-difference calculations, SW propagation is simulated, and vital information on transmission distance and dispersion curves is obtained. Experimental results show excellent agreement with these simulations. By applying a voltage to both sides of the conducting substrate, current across the film and SW device, resulting in the frequency shift of the SWs, is generated. These results demonstrate that high-quality γ-Fe2O3 films developed through the two-step growth method can efficiently propagate SWs, offering possibilities for various modulation methods in SW-based computing devices. This study positions spinel γ-Fe2O3 as a promising ferrimagnetic candidate for future applications in efficient SW modulation within computational systems.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141669939","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 Fabrication of High-Density Ensembles of Color Centers via Ion Implantation on a Hot Diamond Substrate 通过在热金刚石基底上进行离子注入高效制造高密度色心组合

Advanced Physics Research Pub Date : 2024-07-08 DOI: 10.1002/apxr.202400067

E. Nieto Hernandez, G. Andrini, A. Crnjac, M. Brajkovic, F. Picariello, E. Corte, V. Pugliese, M. Matijević, P. Aprà, V. Varzi, J. Forneris, M. Genovese, Z. Siketic, M. Jaksic, S. Ditalia Tchernij

{"title":"Efficient Fabrication of High-Density Ensembles of Color Centers via Ion Implantation on a Hot Diamond Substrate","authors":"E. Nieto Hernandez, G. Andrini, A. Crnjac, M. Brajkovic, F. Picariello, E. Corte, V. Pugliese, M. Matijević, P. Aprà, V. Varzi, J. Forneris, M. Genovese, Z. Siketic, M. Jaksic, S. Ditalia Tchernij","doi":"10.1002/apxr.202400067","DOIUrl":"10.1002/apxr.202400067","url":null,"abstract":"Nitrogen-vacancy (NV) centers in diamonds are one of the most promising systems for quantum technologies, including quantum metrology and sensing. A promising strategy for the achievement of high sensitivity to external fields relies on the exploitation of large ensembles of NV centers, whose fabrication by ion implantation is upper limited by the amount of radiation damage introduced in the diamond lattice. In this work an approach is demonstrated to increase the density of NV centers upon the high-fluence implantation of MeV N2+ ions on a hot target substrate (>550 °C). The results show that with respect to room-temperature implantation, the high-temperature process increases the vacancy density threshold required for the irreversible conversion of diamond to a graphitic phase, thus enabling to achieve higher density ensembles. Furthermore, the formation efficiency of color centers is investigated on diamond substrates implanted at varying temperatures with MeV N2+ and Mg+ ions revealing that the formation efficiency of both NV centers and magnesium-vacancy (MgV) centers increases with the implantation temperature.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400067","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141668821","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

Deeper Insight into the Mechanisms Behind Sputter Damage in Silicon Solar Cells Based on the Example of Nanocrystalline Silicon Carbide 以纳米晶碳化硅为例，深入了解硅太阳能电池溅射损伤背后的机理

Advanced Physics Research Pub Date : 2024-07-04 DOI: 10.1002/apxr.202400036

Alexander Eberst, Binbin Xu, Karsten Bittkau, Weiyuan Duan, Andreas Lambertz, Ansgar Meise, Marc Heggen, Rafal E. Dunin-Borkowski, Uwe Rau, Kaining Ding

{"title":"Deeper Insight into the Mechanisms Behind Sputter Damage in Silicon Solar Cells Based on the Example of Nanocrystalline Silicon Carbide","authors":"Alexander Eberst, Binbin Xu, Karsten Bittkau, Weiyuan Duan, Andreas Lambertz, Ansgar Meise, Marc Heggen, Rafal E. Dunin-Borkowski, Uwe Rau, Kaining Ding","doi":"10.1002/apxr.202400036","DOIUrl":"10.1002/apxr.202400036","url":null,"abstract":"Transparent conducting oxides, like indium tin oxide, enable lateral charge carrier transport in silicon heterojunction solar cells. However, their deposition can damage the passivation quality in the solar cell. This damage during the sputter deposition is a complex issue that has not been fully understood, particularly in various silicon-based materials like amorphous silicon, polycrystalline silicon, or nanocrystalline silicon carbide. The degradation in passivation quality observed in, for example, amorphous silicon is not only explainable by UV light degradation. This study explores the origin of this degradation based on the example of hydrogenated nanocrystalline silicon carbide by combining simulations with experimental analyses. It delves into potential sources of damage during the sputtering process and determines that neither primary nor secondary effects from plasma luminescence or electron bombardment are likely contributors to the damage. Similarly, the implantation of ions, as well as the creation of vacancies and ionization of lattice atoms, are also considered improbable causes. It is, however, proposed that the transfer of energy to the crystalline silicon interface via phonons can factor into the degradation of the passivation quality. This transfer might be a plausible explanation for the damage observed in the passivation layers during the sputtering process.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141678572","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

An Extremely Pseudo-Plastic, Organic Crystal-Based Concentric-Ring-Resonator Coupled Optical Waveguide 基于同心环形谐振器耦合光波导的极伪塑料有机晶体

Advanced Physics Research Pub Date : 2024-07-04 DOI: 10.1002/apxr.202400075

Avulu Vinod Kumar, Deepak Manoharan, Ankur Khapre, Soumyajit Ghosh, Rajadurai Chandrasekar

{"title":"An Extremely Pseudo-Plastic, Organic Crystal-Based Concentric-Ring-Resonator Coupled Optical Waveguide","authors":"Avulu Vinod Kumar, Deepak Manoharan, Ankur Khapre, Soumyajit Ghosh, Rajadurai Chandrasekar","doi":"10.1002/apxr.202400075","DOIUrl":"10.1002/apxr.202400075","url":null,"abstract":"The precise shaping of optical waveguides is crucial for advancing photonic circuit technologies. In this study, the first fabrication of a resonator is introduced with coiled circular geometry(CCG) using pseudo-plastic microcrystals of 6,6′-((1E,1′E)-hydrazine-1,2-diylidenebis(methaneylylidene))bis(2,4-dibromophenol), HDBP. The molecular packing supported by type-II inter-molecular halogen bonding and hydrogen bonding provides an exceptional strain-holding capacity for HDBP crystals. This property enables the creation of compact CCGs with three interconnected turns utilizing an atomic force microscopy cantilever tip-based mechanophotonics technique. This CCG acts as a concentric ring-resonator (CRR) that splits and routes light in clockwise and anticlockwise directions along circular turns, providing optical interference. Subsequently, an HDBP optical waveguide is integrated with the CRR, resulting in the development of the organic crystal-based optical filter. The modulation observed in optical modes’ wavelengths and their intensities in the waveguide when coupled with CRR shows optical filter functionality. This fabricated device holds promise for applications in high-fidelity sensing, precision micro-measurements, and optical quantum processing technologies, showcasing the potential of organic crystals in advancing photonics.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141678587","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

Microfluidic Metasurfaces: A New Frontier in Electromagnetic Wave Engineering 微流体元表面：电磁波工程的新领域

Advanced Physics Research Pub Date : 2024-06-24 DOI: 10.1002/apxr.202400059

Jin Qin, Shibin Jiang, Shibin Li, Shaowei He, Weiming Zhu

{"title":"Microfluidic Metasurfaces: A New Frontier in Electromagnetic Wave Engineering","authors":"Jin Qin, Shibin Jiang, Shibin Li, Shaowei He, Weiming Zhu","doi":"10.1002/apxr.202400059","DOIUrl":"https://doi.org/10.1002/apxr.202400059","url":null,"abstract":"Metasurfaces, as 2D artificial electromagnetic materials, play a pivotal role in manipulating electromagnetic waves by controlling their amplitude, phase, and polarization. Achieving this control involves designing subwavelength meta-molecules with specific geometries and periodicities. In the context of microfluidic metasurfaces, optical properties can be dynamically modulated by altering either the geometric structure of liquid meta-molecules or the refractive index of the liquid medium. Leveraging the fluidity of liquid materials, microfluidic metasurfaces exhibit remarkable performance in terms of reconfigurability and flexibility. These properties not only establish a cutting-edge research area but also broaden the scope of applications for active metasurface devices. Additionally, the integration of metasurfaces within microfluidic systems has led to novel functionalities, including enhanced particle manipulation and sensor technologies. Compared to conventional solid-material-based metasurfaces, microfluidic metasurfaces offer greater design freedom, making them advantageous for diverse fields such as electromagnetic absorption, optical sensing, holographic displays, and tunable optical meta-devices like flat lenses and polarizers. This review provides insights into the characteristics, modulation techniques, and potential applications of microfluidic metasurfaces, illuminating both the current research landscape and promising avenues for further explorations.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665188","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

Machine Learning for Perovskite Solar Cells: An Open-Source Pipeline Perovskite 太阳能电池的机器学习：开源管道

Advanced Physics Research Pub Date : 2024-06-20 DOI: 10.1002/apxr.202400060

Nicholas Roberts, Dylan Jones, Alex Schuy, Shi-Chieh Hsu, Lih Y. Lin

{"title":"Machine Learning for Perovskite Solar Cells: An Open-Source Pipeline","authors":"Nicholas Roberts, Dylan Jones, Alex Schuy, Shi-Chieh Hsu, Lih Y. Lin","doi":"10.1002/apxr.202400060","DOIUrl":"https://doi.org/10.1002/apxr.202400060","url":null,"abstract":"Among promising applications of metal-halide perovskite, the most research progress is made for perovskite solar cells (PSCs). Data from myriads of research work enables leveraging machine learning (ML) to significantly expedite material and device optimization as well as potentially design novel configurations. This paper represents one of the first efforts in providing open-source ML tools developed utilizing the Perovskite Database Project (PDP), the most comprehensive open-source PSC database to date with over 43 000 entries from published literature. Three ML model architectures with short-circuit current density (Jsc) as a target are trained exploiting the PDP. Using the XGBoost architecture, a root mean squared error (RMSE) of 3.58 <math></math>, R2 of 0.35 and a mean absolute percentage error (MAPE) of 9.49% are achieved. This performance is comparable to results reported in literature, and through further investigation can likely be improved. To overcome challenges with manual database creation, an open-source data cleaning pipeline is created for PDP data. Through the creation of these tools, which have been published on GitHub, this research aims to make ML available to aid the design for PSC while showing the already promising performance achieved. The tools can be adapted for other applications, such as perovskite light-emitting diodes (PeLEDs), if a sufficient database is available.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400060","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665041","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

Mid-Infrared Perfect Absorption with Planar and Subwavelength-Perforated Ultrathin Metal Films 利用平面和亚波长穿孔超薄金属膜实现中红外完美吸收

Advanced Physics Research Pub Date : 2024-06-20 DOI: 10.1002/apxr.202400012

Zarko Sakotic, Amogh Raju, Alexander Ware, Félix A. Estévez H., Madeline Brown, Yonathan Magendzo Behar, Divya Hungund, Daniel Wasserman

{"title":"Mid-Infrared Perfect Absorption with Planar and Subwavelength-Perforated Ultrathin Metal Films","authors":"Zarko Sakotic, Amogh Raju, Alexander Ware, Félix A. Estévez H., Madeline Brown, Yonathan Magendzo Behar, Divya Hungund, Daniel Wasserman","doi":"10.1002/apxr.202400012","DOIUrl":"https://doi.org/10.1002/apxr.202400012","url":null,"abstract":"A straightforward analytical approach is proposed for the design of minimally thin metal absorbers. Unlike traditional resonant design principles, where shape, size, and periodicity of a nanostructured film determine the absorption properties, this study uses only the thickness and permittivity (i.e., sheet conductivity) of the material at hand to demonstrate maximal absorption in the minimal possible thickness at any given wavelength in planar layers – guided by only the derived material-agnostic equations. An alternative mechanism is further proposed and experimentally demonstrated to obtain precise control over the sheet conductivity of metal films necessary for such designs using metal dilution, enabling the tuning of both the amplitude and the phase of reflected waves. Finally, the concept of “phase doping” is proposed and experimentally demonstrated, wherein an ultrathin metal layer is placed within the spacer of the absorber cavity, which spectrally tunes the absorption feature without changing the spacer thickness or participating in the absorption. By judiciously combining the dilution of the absorbing and phase layers, a multifunctional ultrathin absorber architecture is demonstrated with customizable amplitude, spectral position, and selectivity, all leveraging the same vertical stack. These findings are promising for the design of ultrasensitive detectors, thermal emitters, and nonlinear optical components.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968012","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