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The $\nu=2/5$ state is spin-unpolarized at weak magnetic field and fully polarized at strong field. At intermediate field, a plateau of half the maximal polarization is observed. We study this phenomenon in the frame of composite fermion…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Shi-Jie Yang , Yue Yu , Bang-Fen Zhu

Phosphorus has diverse chemical bonds and even in its two-dimensional form there are three stable allotropes: black phosphorene (Black-P), blue phosphorene (Blue-P), and violet phosphorene (Violet-P). Due to the complexity of these…

Computational Physics · Physics 2023-02-10 Penghua Ying , Ting Liang , Ke Xu , Jin Zhang , Jianbin Xu , Jianyang Wu , Zheyong Fan , Tapio Ala-Nissila , Zheng Zhong

The Seebeck effect and the Nernst effect, which reflect the appearance of electric fields along $x$-axis and along $y$-axis ($E_{x}$ and $E_{y}$), respectively, induced by the thermal gradient along $x$-axis, are studied in the QGP at an…

High Energy Physics - Phenomenology · Physics 2021-10-08 He-Xia Zhang , Jin-Wen Kang , Ben-Wei Zhang

Metallic transition-metal nitrides (TMNs) are promising conductive ceramics for many applications, whose thermal transport is of great importance in device design. It is found metallic TiN and HfN hold anomalous thermal transport behaviors…

Materials Science · Physics 2020-06-30 Shouhang Li , Ao Wang , Yue Hu , Xiaokun Gu , Zhen Tong , Hua Bao

The subject of thermal transport at the mesoscopic scale and in low-dimensional systems is interesting for both fundamental research and practical applications. As the first example of truly two-dimensional materials, graphene has…

Materials Science · Physics 2014-06-10 Yong Xu , Zuanyi Li , Wenhui Duan

We theoretically study the influence of impurity scattering on the electric and thermal transport of borophane layer, a two-dimensional anisotropic Dirac semi-metal with two tilted and anisotropic Dirac cones. In a systematic framework, we…

Mesoscale and Nanoscale Physics · Physics 2019-06-19 Moslem Zare

Fundamental insight into lattice dynamics and phonon transport is critical to the efficient manipulation of heat flow, which is one of the appealing thermophysical problems with enormous practical implications. Phosphorene, a novel…

Materials Science · Physics 2018-01-16 Guangzhao Qin , Ming Hu

In this work, we study the electronic and transport properties of phosphorene nanorings in two perpendicular directions (zigzag and armchair directions) in the presence of zigzag metallic source and drain leads. Our results are based on the…

Mesoscale and Nanoscale Physics · Physics 2024-01-10 MohammadAmir Bazrafshan , Farhad Khoeini , Bartlomiej Szafran

The polymorph of ${\rm 8-Pmmn}$ borophene is an anisotropic Dirac material with tilted Dirac cones at two valleys. The tilting of the Dirac cones at two valleys are in opposite direction, which manifests itself via valley dependent Landau…

Mesoscale and Nanoscale Physics · Physics 2018-06-13 SK Firoz Islam

We report measurements of the thermopower $S$ and Nernst signal $S_{yx}$ in graphene in a magnetic field $H$. Both quantities show strong quantum oscillations vs. the gate voltage $V_g$. Our measurements for Landau Levels of index $n\ne 0$…

Mesoscale and Nanoscale Physics · Physics 2009-09-11 Joseph G. Checkelsky , N. P. Ong

The dipoles in ferroelectric copolymer P(VDF-TrFE) can be driven by electric field, introducing phonon transport modulations through polarizing molecular chains. The thermal conductivity in single 75/25 P(VDF-TrFE) nanofibers is found to…

Applied Physics · Physics 2022-12-07 Lan Dong , Bohai Liu , Yuanyuan Wang , Xiangfan Xu

In this study, we calculate the $T$=300 K scattering and thermoelectric transport properties of rhombohedral GeTe using first-principles modeling. The room-temperature phase of GeTe has a layered structure, with cross-plane and in-plane…

Materials Science · Physics 2019-08-07 Vahid Askarpour , Jesse Maassen

We study electrical and thermoelectric transport properties of the surface state of the topological insulator and graphene in the presence of randomly distributed impurities. For finite impurity strength, the dependence of the transport…

Materials Science · Physics 2011-10-18 Sung-Po Chao , Vivek Aji

The derivation for the transport coefficients of an electron system in the presence of temperature gradient and the electric and magnetic fields are presented. The Nernst conductivity and the transverse thermoelectric power of the Dirac…

Strongly Correlated Electrons · Physics 2014-11-20 Xin-Zhong Yan , C. S. Ting

We examine the electronic properties of 2D electron gas in black phosphorus multilayers in the presence of a perpendicular magnetic field, highlighting the role of in-plane anisotropy on various experimental quantities such as ac…

Mesoscale and Nanoscale Physics · Physics 2015-09-02 Yongjin Jiang , Rafael Roldán , Francisco Guinea , Tony Low

Nonlinear transport coefficients do not obey, in general, reciprocity relations. We here discuss the magnetic-field asymmetries that arise in thermoelectric and heat transport of mesoscopic systems. Based on a scattering theory of weakly…

Mesoscale and Nanoscale Physics · Physics 2013-10-22 Sun-Yong Hwang , David Sánchez , Minchul Lee , Rosa López

Recent reports on the fabrication of phosphorene, i.e., mono- or few-layer black phosphorus, have raised exciting prospects of an outstanding two-dimensional (2D) material that exhibits excellent properties for nanodevice applications. Here…

Materials Science · Physics 2014-06-11 Liangzhi Kou , Thomas Frauenheim , Changfeng Chen

We study the thermoelectric conductivities of a strongly correlated system in the presence of a magnetic field by the gauge/gravity duality. We consider a class of Einstein-Maxwell-Dilaton theories with axion fields imposing momentum…

High Energy Physics - Theory · Physics 2015-08-25 Keun-Young Kim , Kyung Kiu Kim , Yunseok Seo , Sang-Jin Sin

We draw motivation from recent experimental studies and present a comprehensive study of magnetothermoelectric transport in a graphene monolayer within the linear response regime. We employ the modified Kubo formalism developed for thermal…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 R. Nasir , K. Sabeeh

We demonstrate that a field effect transistor (FET) made of few layer black phosphorus (BP) encapsulated in hexagonal boron nitride (h-BN) in vacuum, exhibts the room temperature hole mobility of 5200 $cm^2/Vs$ being limited just by the…

Mesoscale and Nanoscale Physics · Physics 2016-12-06 Gen Long , Denis Maryenko , Junying Shen , Shuigang Xu , Jianqiang Hou , Zefei Wu , Wing Ki Wong , Tianyi Han , Jiangxiazi Lin , Yuan Cai , Rolf Lortz , Ning Wang