Physica E-low-dimensional Systems & Nanostructures最新文献_第4页

Transport evidence for the quantum Wigner solid formation in two-dimensional electron systems

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-04 DOI: 10.1016/j.physe.2025.116192

A.A. Shashkin , M. Yu. Melnikov , S.V. Kravchenko

引用次数: 0

GeO2 – ZnO nanocomposite rosettes for enhancement of performance in energy technologies: Coupling organic templated synthesis with microwave treatment

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-04 DOI: 10.1016/j.physe.2025.116198

Shaan Bibi Jaffri , Khuram Shahzad Ahmad , Isaac Abrahams , Wahidah H. Al-Qahtani

{"title":"GeO2 – ZnO nanocomposite rosettes for enhancement of performance in energy technologies: Coupling organic templated synthesis with microwave treatment","authors":"Shaan Bibi Jaffri , Khuram Shahzad Ahmad , Isaac Abrahams , Wahidah H. Al-Qahtani","doi":"10.1016/j.physe.2025.116198","DOIUrl":"10.1016/j.physe.2025.116198","url":null,"abstract":"<div><div>Current study introduces first report on the sustainable synthesis of GeO<sub>2</sub> – ZnO nano-hetero-system copulated with the microwave treatment. GeO<sub>2</sub> – ZnO has been effectively tuned for the band gap causing an alleviation from 4.89 to 2.89 eV upon the nanocomposite formation. With the hexagonal phase, GeO<sub>2</sub> – ZnO possessed an average crystallite size of the 62.11 nm. These particles existed as nano-rossettes with the uniform upward projection. The catalytic performance of the synthesized material was more inclined towards pure hydrogen generation with the lower overpotential (<em>η</em><sub><em>HER</em></sub><em>)</em> and Tafel slopes <em>i.e.</em> 128 mV and 121.9 mV dec<sup>−1</sup>. GeO<sub>2</sub> – ZnO nano-rossettes bedecked electrode remained unscathed for a prolonged duration of the 1500 min and demonstrated commendable charge storage with the unit capacity of 384 mAH g<sup>−1</sup>. As a passivation layer in perovskite solar cells, these nanomaterials improved efficiency up to 15 % by prevention of the charge aggregation.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"169 ","pages":"Article 116198"},"PeriodicalIF":2.9,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Achieving n- and p-type Ohmic contacts in vertical graphene/CrSi2N4 heterostructure: Role of electric field

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-04 DOI: 10.1016/j.physe.2025.116201

Meng Chen , Shuo Liu , Mengying Zhao , Hong Li , Fengbin Liu

引用次数: 0

Comparison of various schemes to determine the Young’s modulus of disordered carbon nanomembranes compared to crystalline graphene

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116170

Levin Mihlan, Julian Ehrens, Jürgen Schnack

引用次数: 0

Edge effect induce spin-gapless semiconducting and half-metallic properties of N-doped zigzag graphene nanoribbons

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116172

Jiewen Min, Xingyuan Ou, Xiong Liu, Wenting Zou, Zhaoting Li, Liqin Deng, Yuanxiang Deng

{"title":"Edge effect induce spin-gapless semiconducting and half-metallic properties of N-doped zigzag graphene nanoribbons","authors":"Jiewen Min, Xingyuan Ou, Xiong Liu, Wenting Zou, Zhaoting Li, Liqin Deng, Yuanxiang Deng","doi":"10.1016/j.physe.2024.116172","DOIUrl":"10.1016/j.physe.2024.116172","url":null,"abstract":"<div><div>Graphene nanoribbons with mixed edge structures are promising candidate materials for the next generation of nanoelectronics due to their unique and peculiar physical and chemical properties, as well as their interesting and tunable electronic structures. Here, we designs and calculates a series of periodic edge N-doped ZGNRs using first principles calculations based on density functional theory. The band gap of these ZGNRs can be adjusted from metal to semiconductor, by the periodic length of the nanobands, and the number and interval distance of N atom doping. Among them, 6-ZGNR-(1,3) is a metallic, 6-ZGNR-(1,4) and 6-ZGNR-(2,4) are half-metallic, 6-ZGNR-(2,5) and 6-ZGNR-(3,5) are SGS, and 6-ZGNR-(3,6) is a magnetic semiconductor. We projected band structures into p<sub>x</sub> orbitals of edge C and N atoms separately, and found that the energy near the Fermi level in 6-ZGNR-(1,4) is mainly contributed by edge C atoms, while 6-ZGNR-(3,5) is contributed by edge N atoms. This indicates that N atom doping plays a major role in the transition of spin polarization properties. Our studies suggest that it will have significant theoretical significance and practical value in the application of spintronic devices.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"167 ","pages":"Article 116172"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting BN analogue of 8-16-4 graphyne: In silico insights into its structural, electronic, optical, and thermal transport properties

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116163

Isaac M. Felix , Jessé M. Pontes , Djardiel S. Gomes , Thiago B.G. Guerra , Sérgio Azevedo , Leonardo D. Machado , Lídia C. Gomes , Raphael M. Tromer

{"title":"Predicting BN analogue of 8-16-4 graphyne: In silico insights into its structural, electronic, optical, and thermal transport properties","authors":"Isaac M. Felix , Jessé M. Pontes , Djardiel S. Gomes , Thiago B.G. Guerra , Sérgio Azevedo , Leonardo D. Machado , Lídia C. Gomes , Raphael M. Tromer","doi":"10.1016/j.physe.2024.116163","DOIUrl":"10.1016/j.physe.2024.116163","url":null,"abstract":"<div><div>The boron nitride (BN) analogue of 8-16-4 graphyne, termed SBNyne, is proposed for the first time. Its physical properties were explored using first-principles calculations and classical molecular dynamics (MD) simulations. Phonon dispersion calculations and <em>ab initio</em> molecular dynamics simulations revealed that this system is dynamically stable at room temperature. We found that SBNyne exhibits a wide indirect bandgap of 4.58 eV using HSE06 and 3.20 eV using PBE. It displays strong optical absorption in the ultraviolet region while remaining transparent in the infrared and visible regions. Additionally, SBNyne exhibits significantly lower thermal conductivity compared to h-BN. Phonon spectrum analysis indicates that out-of-plane phonons predominantly contribute to the vibrational density of states only at very low frequencies, explaining its low thermal conductivity. These findings expand the knowledge of two-dimensional (2D) BN materials and open new avenues for their design and advanced technological applications.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"167 ","pages":"Article 116163"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intrinsic spin–orbit interaction in ferromagnet/superconductor hybrid nanostructures: Unveiling the role in triplet generation and critical temperature modulation

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116162

Asif Majeed , Harkirat Singh

{"title":"Intrinsic spin–orbit interaction in ferromagnet/superconductor hybrid nanostructures: Unveiling the role in triplet generation and critical temperature modulation","authors":"Asif Majeed , Harkirat Singh","doi":"10.1016/j.physe.2024.116162","DOIUrl":"10.1016/j.physe.2024.116162","url":null,"abstract":"<div><div>Recent theoretical advancements propose an innovative approach to induce triplet generation beyond the conventional inhomogeneous magnetic field-driven singlet–triplet conversion. Here, we investigate a hybrid nanostructure comprising a conventional BCS superconductor proximitized with a homogeneous ferromagnet possessing intrinsic spin–orbit coupling arising from broken symmetries due to lattice mismatch at the interface. Through extensive simulations, we explore the impact of spin–orbit interaction on the critical temperature, revealing the pivotal role played by the in-plane component of the magnetic exchange field and the dimensional characteristics of the hybrid system in singlet–triplet conversion. Remarkably, our findings demonstrate that a single homogeneous ferromagnet with intrinsic spin–orbit coupling governs triplet generation and exhibits a spin valve effect. Notably, we quantify our observations through the superconducting critical temperature (<span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span>), showcasing a spin-valve like functionality dependent on the orientation of magnetization. Moreover, we observe a significant reduction in the critical temperature of the hybrid structure, even reaching zero under specific dimensions, attributed to the controlled generation and regulation of spin-1 triplets. Crucially, our investigation also validates the notion of the mechanism where a <span><math><mfrac><mrow><mi>π</mi></mrow><mrow><mn>2</mn></mrow></mfrac></math></span> rotation of the in-plane magnetic exchange field toggles superconductivity, offering a promising avenue for actively controlling triplet generation—a pivotal step towards high-performance storage devices in emerging superconducting spintronics applications.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"167 ","pages":"Article 116162"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Valley-dependent damping of Zitterbewegung in 2D structures based on Dirac crystals

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116164

E.I. Kukhar , S.V. Kryuchkov

引用次数: 0

Ag/Co3O4 nanocomposites from ZIF-67 MOF for enhanced low-temperature toluene gas sensing

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116174

W.J. Wu , Bo Hong , Jingcai Xu , Xiaoling Peng , Jing Li , Hongwei Chen , Shi Qiu , Nan Zhang , Xinqing Wang

{"title":"Ag/Co3O4 nanocomposites from ZIF-67 MOF for enhanced low-temperature toluene gas sensing","authors":"W.J. Wu , Bo Hong , Jingcai Xu , Xiaoling Peng , Jing Li , Hongwei Chen , Shi Qiu , Nan Zhang , Xinqing Wang","doi":"10.1016/j.physe.2024.116174","DOIUrl":"10.1016/j.physe.2024.116174","url":null,"abstract":"<div><div>Porous Co<sub>3</sub>O<sub>4</sub> nanostructures are synthesized through thermolysis of ZIF-67 MOF, and then Ag nanoparticles are loaded into Co<sub>3</sub>O<sub>4</sub> nanostructures to obtain Ag/Co<sub>3</sub>O<sub>4</sub> nanocomposites. All results indicate that Ag-loading increases the specific surface area and bandgap of Ag/Co<sub>3</sub>O<sub>4</sub> nanocomposites, as the result, the toluene gas sensing performance is also improved greatly. Among them, Ag<sub>0.126</sub>-Co<sub>3</sub>O<sub>4</sub> sensor exhibits the highest response value of 520.60 to 100 ppm toluene gas at 150 °C, which is 21.28 times than that of Co<sub>3</sub>O<sub>4</sub> sensor. Notably, the optimal operating temperature of Ag/Co<sub>3</sub>O<sub>4</sub> sensors decreases from 230 °C to 150 °C due to the excellent catalytic activity of Ag nanoparticles. Moreover, Ag/Co<sub>3</sub>O<sub>4</sub> sensors display the excellent selectivity and favorable stability to toluene gas. Ag nanoparticles lead to the formation of Schottky heterojunctions, increasing the resistance in toluene gas. Furthermore, Ag nanoparticles provide more oxygen adsorption sites, reducing the resistance in air. Based on the synergistic effect of chemical sensitization, spillover effect, high specific surface area and Schottky heterojunctions, Ag-loading can enhance the toluene gas sensing performance of Ag/Co<sub>3</sub>O<sub>4</sub> sensors.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"167 ","pages":"Article 116174"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of thermoelectric properties for monolayer BiSbTeSe2

IF 2.9 3区物理与天体物理

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2025-02-01 DOI: 10.1016/j.physe.2024.116167

Bin Xu , Wenxu Zhao , Linxin Zuo , Cheng Qian , Shanshan Ma , Yusheng Wang , Xiujiang Dong , Lin Yi

{"title":"Prediction of thermoelectric properties for monolayer BiSbTeSe2","authors":"Bin Xu , Wenxu Zhao , Linxin Zuo , Cheng Qian , Shanshan Ma , Yusheng Wang , Xiujiang Dong , Lin Yi","doi":"10.1016/j.physe.2024.116167","DOIUrl":"10.1016/j.physe.2024.116167","url":null,"abstract":"<div><div>The full-potential linearized augmented plane wave method and the semi-classical Boltzmann theory are used to calculate the thermoelectric properties of monolayer BiSbTeSe<sub>2</sub>. For the monolayer BiSbTeSe<sub>2</sub>, the Tran-Blaha-modified Becke-Johnson (TB-mBJ) method calculates a larger band gap than that calculated by the generalized gradient approximation (GGA) method. Where the bandgap calculated by TB-mBJ is 0.94, while the bandgap calculated by GGA is 0.85. The absence of imaginary frequencies in the monolayer BiSbTeSe<sub>2</sub> phonon band structure ensures its dynamic stability. The contribution of the optical branch to the lattice thermal conductivity is low due to the strong scattering of the optical branch. So the contribution to the lattice thermal conductivity mainly comes from the acoustic branch. The maximum frequency of the acoustic branch is 1.8. The monolayer BiSbTeSe<sub>2</sub> has a low lattice thermal conductivity due to the low frequency of the acoustic branch. AIMD simulations confirm its thermal stability. Finally, the ZT value of monolayer BiSbTeSe<sub>2</sub> is calculated using TB-mBJ to peak at about 0.98 at a carrier concentration of 2 × 10<sup>20</sup> cm<sup>−3</sup> and a temperature of 1125 K. The ZT value of monolayer BiSbTeSe<sub>2</sub> is calculated using TB-mBJ.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"167 ","pages":"Article 116167"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0