arXiv - PHYS - Mesoscale and Nanoscale Physics最新文献_第8页

Ferroelectric tuning of the valley polarized metal-semiconductor transition in Mn2P2S3Se3/Sc2CO2 van der Waals heterostructures and application to nonlinear Hall effect devices Mn2P2S3Se3/Sc2CO2 范德瓦尔斯异质结构中谷极化金属-半导体转变的铁电调谐及其在非线性霍尔效应器件中的应用

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06181

Hanbo Sun, Yewei Ren, Chao Wu, Pengqiang Dong, Weixi Zhang, Yin-Zhong Wu, Ping Li

{"title":"Ferroelectric tuning of the valley polarized metal-semiconductor transition in Mn2P2S3Se3/Sc2CO2 van der Waals heterostructures and application to nonlinear Hall effect devices","authors":"Hanbo Sun, Yewei Ren, Chao Wu, Pengqiang Dong, Weixi Zhang, Yin-Zhong Wu, Ping Li","doi":"arxiv-2409.06181","DOIUrl":"https://doi.org/arxiv-2409.06181","url":null,"abstract":"In order to promote the development of the next generation of nano-spintronic\u0000devices, it is of great significance to tune the freedom of valley in\u0000two-dimensional (2D) materials. Here, we propose a mechanism for manipulating\u0000the valley and nonlinear Hall effect by the 2D ferroelectric substrate. The\u0000monolayer Mn2P2S3Se3 is a robust antiferromagnetic valley polarized\u0000semiconductor. Importantly, the valley polarized metal-semiconductor phase\u0000transition of Mn2P2S3Se3 can be effectively tuned by switching the\u0000ferroelectric polarization of Sc2CO2. We reveal the microscopic mechanism of\u0000phase transition, which origins from the charge transfer and band alignment.\u0000Additionally, we find that transformed polarization direction of Sc2CO2\u0000flexibly manipulate the Berry curvature dipole. Based on this discovery, we\u0000present the detection valley polarized metal-semiconductor transition by the\u0000nonlinear Hall effect devices. These findings not only offer a scheme to tune\u0000the valley degree of freedom, but also provide promising platform to design the\u0000nonlinear Hall effect devices.","PeriodicalId":501137,"journal":{"name":"arXiv - PHYS - Mesoscale and Nanoscale Physics","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Internal tensorial variables and a heat transport equation with inertial, thermal viscosity and vorticity terms 内部张量变量和带有惯性、热粘性和涡度项的热传输方程

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06380

Liliana Restuccia, David Jou, Michal Pavelka

{"title":"Internal tensorial variables and a heat transport equation with inertial, thermal viscosity and vorticity terms","authors":"Liliana Restuccia, David Jou, Michal Pavelka","doi":"arxiv-2409.06380","DOIUrl":"https://doi.org/arxiv-2409.06380","url":null,"abstract":"Taking into account some results obtained within the framework of\u0000non-equilibrium thermodynamics with internal variables (NET-IV) in a previous\u0000paper, where generalized Guyer-Krumhansl evolution equations for the heat flux\u0000in heat rigid conductors were derived, in this paper we obtain a heat transport\u0000equation describing conductive, viscous and vortical motions of phonons. To do\u0000so, we take as independent variables the internal energy, the heat flux, and a\u0000tensorial internal variable, with a symmetric part and an antisymmetric part,\u0000which turns out to be related to the rotational terms in the final equation.\u0000Besides the shear phonon viscosity arising in usual phonon hydrodynamics, we\u0000propose a rotational phonon viscosity, which would describe a transfer from\u0000ordered rotational motion of phonon vortices to rotational microscopic motions\u0000of diatomic particles constituting complex polar crystals, in analogy to the\u0000hydrodynamics of classical micropolar fluids. This possibility emphasizes the\u0000interest of exploring the interactions between the average heat flow and the\u0000heat vortices found in some models of phonon hydrodynamics.","PeriodicalId":501137,"journal":{"name":"arXiv - PHYS - Mesoscale and Nanoscale Physics","volume":"406 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Brewster Angle Shift in Doped Graphene via the Fizeau Drag Effect 通过菲佐阻力效应增强掺杂石墨烯的布鲁斯特角移

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06467

Rafi Ud Din, Yuncheng Zhou, Reza Asgari, Gao Xianlong

{"title":"Enhanced Brewster Angle Shift in Doped Graphene via the Fizeau Drag Effect","authors":"Rafi Ud Din, Yuncheng Zhou, Reza Asgari, Gao Xianlong","doi":"arxiv-2409.06467","DOIUrl":"https://doi.org/arxiv-2409.06467","url":null,"abstract":"We derive the general Fresnel coefficients for reflection by incorporating\u0000the Fizeau drag effect in doped graphene, which arises from the unique behavior\u0000of its massless Dirac electrons. Using the standard Maxwell equations and\u0000constitutive relations, we analyze the influence of this relativistic\u0000phenomenon on the optical properties of doped graphene. Our study focuses on\u0000the angular shift of Brewster's angle in a structure where monolayer graphene\u0000is sandwiched between two static dielectric media. Our findings reveal that the\u0000presence of the Fizeau drag effect significantly enhances the Brewster angle\u0000shift, leading to substantial modifications in the optical characteristics of\u0000the graphene channel, including notable alterations in the reflectance\u0000spectrum. We demonstrate that this angular shift can be further amplified by\u0000increasing the drift velocities and charge densities of the electrons in\u0000graphene, offering a tunable mechanism for controlling optical behavior in\u0000graphene-based systems. The findings of this work have significant implications\u0000for the design and development of planar photonic devices that take advantage\u0000of the optical characteristics of graphene. This breakthrough creates new\u0000opportunities for the use of graphene in sophisticated photonic technologies,\u0000where exact control over the interactions between light and matter is\u0000essential.","PeriodicalId":501137,"journal":{"name":"arXiv - PHYS - Mesoscale and Nanoscale Physics","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Moiré Kramers-Weyl Fermions from Structural Chirality with Ideal Radial Spin Texture 来自理想径向自旋纹理结构手性的 Moiré Kramers-Weyl 费米子

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06806

D. J. P. de Sousa, Seungjun Lee, Tony Low

引用次数: 0

Four-terminal voltage fluctuations in disordered graphene nanoribbons: Anderson and anomalous localization effects 无序石墨烯纳米带中的四端电压波动：安德森效应和反常定位效应

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06891

Pablo Encarnación, Victor A. Gopar

引用次数: 0

Helicity controlled spin Hall angle in the 2D Rashba altermagnets 二维拉什巴自旋霍尔角的螺旋控制

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06167

Weiwei Chen, Longhai Zeng, W. Zhu

引用次数: 0

Non-Monotonic Size-Dependent Exciton Radiative Lifetime in CsPbBr3 Nanocrystals CsPbBr3 纳米晶体中与尺寸无关的非单调激子辐射寿命

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06165

Abdullah S. Abbas, Daniel Chabeda, Daniel Weinberg, David T. Limmer, Eran Rabani, A. Paul Alivisatos

{"title":"Non-Monotonic Size-Dependent Exciton Radiative Lifetime in CsPbBr3 Nanocrystals","authors":"Abdullah S. Abbas, Daniel Chabeda, Daniel Weinberg, David T. Limmer, Eran Rabani, A. Paul Alivisatos","doi":"arxiv-2409.06165","DOIUrl":"https://doi.org/arxiv-2409.06165","url":null,"abstract":"Lead-halide perovskite nanocrystals have recently emerged as desirable\u0000optical materials for applications such as coherent quantum light emitters and\u0000solid-state laser cooling due to their short radiative lifetime and near-unity\u0000photoluminescence quantum yield. Here, we investigate the effect of CsPbBr3\u0000nanocrystal size on the radiative lifetime under ambient conditions.\u0000High-quality nanocrystals, with monoexponential time-resolved photoluminescence\u0000decay behaviors, unveil a non-monotonic trend in radiative lifetime. This\u0000non-monotonicity appears to reflect a behavior common among II-VI (CdSe) and\u0000perovskites semiconducting nanocrystals. We find that large nanocrystals in the\u0000weak quantum confinement regime exhibit long radiative lifetimes due to a\u0000thermally accessible population of dim states. Small nanocrystals within the\u0000strong quantum confinement regime, surprisingly, also show long radiative\u0000lifetimes, due however to a substantial reduction in oscillator strength.\u0000Nanocrystals in the intermediate quantum confinement regime displays the\u0000shortest radiative lifetime, as their oscillator strength is enhanced relative\u0000to particles in the strong confinement regime, but do not have sufficient\u0000low-lying dim states like the large particles to counteract this affect. These\u0000findings shed light on the impact of nanocrystal size on radiative lifetime and\u0000pave the way for tailored optical materials in various optical applications.","PeriodicalId":501137,"journal":{"name":"arXiv - PHYS - Mesoscale and Nanoscale Physics","volume":"175 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Targeted Polariton Flow Through Tailored Photonic Defects 通过定制光子缺陷的定向极化子流

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06478

Elena Rozas, Yannik Brune, Ken West, Kirk W. Baldwin, Loren N. Pfeiffer, Jonathan Beaumariage, Hassan Alnatah, David W. Snoke, Marc Aßmann

引用次数: 0

Group-IV Pentaoctite: A New 2D Material Family 第 IV 族五长石一个新的二维材料家族

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-09 DOI: arxiv-2409.05986

Vanessa D. Kegler, Igor S. S. de Oliveira, Dominike Pacine, Teldo A. S. Pereira, Ricardo W. Nunes, Erika N. Lima

{"title":"Group-IV Pentaoctite: A New 2D Material Family","authors":"Vanessa D. Kegler, Igor S. S. de Oliveira, Dominike Pacine, Teldo A. S. Pereira, Ricardo W. Nunes, Erika N. Lima","doi":"arxiv-2409.05986","DOIUrl":"https://doi.org/arxiv-2409.05986","url":null,"abstract":"This study investigates the structural, mechanical, and electronic properties\u0000of novel two-dimensional (2D) pentaoctite (PO) monolayers composed of group-IV\u0000elements (PO-C, PO-Si, PO-Ge, and PO-Sn) using first-principles calculations.\u0000Stability is explored through phonon spectra and ab initio molecular dynamics\u0000simulations, confirming that all proposed structures are dynamically and\u0000thermally stable. Mechanical analysis shows that PO-C monolayers exhibit\u0000exceptional rigidity, while the others demonstrate greater flexibility, making\u0000them suitable for applications in foldable materials. The electronic properties\u0000show semimetallic behavior for PO-C and metallic behavior for PO-Si, while\u0000PO-Ge and PO-Sn possess narrow band gaps, positioning them as promising\u0000candidates for semiconductor applications. Additionally, PO-C exhibits\u0000potential as an efficient catalyst for the hydrogen evolution reaction (HER),\u0000with strain engineering further enhancing its catalytic performance. These\u0000findings suggest a wide range of technological applications, from\u0000nanoelectronics and nanomechanics to metal-free catalysis in sustainable energy\u0000production.","PeriodicalId":501137,"journal":{"name":"arXiv - PHYS - Mesoscale and Nanoscale Physics","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Super-Poissonian noise from quasiparticle poisoning in electron transport through a pair of Majorana bound states 通过一对马约拉纳束缚态的电子传输中准粒子中毒产生的超泊松噪声

arXiv - PHYS - Mesoscale and Nanoscale Physics Pub Date : 2024-09-09 DOI: arxiv-2409.05594

Florinda Viñas Boström, Patrik Recher

引用次数: 0