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We investigate the thermal conductivity in the armchair and zigzag MoS$_{2}$ nanoribbons, by combining the non-equilibrium Green's function approach and the first-principles method. A strong orientation dependence is observed in the thermal…

Materials Science · Physics 2013-07-12 Jin-Wu Jiang , Xiaoying Zhuang , Timon Rabczuk

We develop a classical kinetic theory of magnetotransport of 2D electrons in narrow channels with partly diffusive boundary scattering and apply it to description of magnetoresistance measured in the temperature interval 4.2-30 K in long…

Mesoscale and Nanoscale Physics · Physics 2020-06-23 O. E. Raichev , G. M. Gusev , A. D. Levin , A. K. Bakarov

We report on magnetotransport measurements of nanoconstricted (Ga,Mn)As devices showing very large resistance changes that can be controlled by both an electric and a magnetic field. Based on the bias voltage and temperature dependent…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Markus Schlapps , Teresa Lermer , Stefan Geissler , Daniel Neumaier , Janusz Sadowski , Dieter Schuh , Werner Wegscheider , Dieter Weiss

We report experimental results of low temperature magnetotransport in high mobility 2D electron systems exposed to radiation up to 20GHz frequency using a simple dipole configuration. Magnetoresistance oscillations are observed as in…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 R. L. Willett , L. N. Pfeiffer , K. W. West

The recent excitement about Dirac and Weyl fermion systems has renewed interest in magnetotransport properties of multi-carrier systems. However, the complexity of their analysis, even in the simplest two-carrier case, has hampered a good…

Mesoscale and Nanoscale Physics · Physics 2019-04-24 G. Eguchi , S. Paschen

On the basis of the Kubo-Luttinger linear response theory combined with the scaling theory of Anderson localization predicting the energy dependence of localization length near the mobility edge, we have studied the thermoelectric response…

Materials Science · Physics 2022-04-07 Takahiro Yamamoto , Masao Ogata , Hidetoshi Fukuyama

We study magnetic, transport and thermodynamic properties of the half-filled two-dimensional ($2D$) Hubbard model with layered distributed repulsive interactions using unbiased finite temperature quantum Monte Carlo simulations.…

Strongly Correlated Electrons · Physics 2017-02-27 Rubem Mondaini , Thereza Paiva

Helical magnets are emerging as a novel class of materials for spintronics and sensor applications; however, research on their charge and spin transport properties in a thin film form is less explored. Herein, we report the temperature and…

Transition metal dichalcogenides (TMDCs) are promising materials for applications in nanoelectronics and correlated fields, where their metallic edge states play a fundamental role in the electronic transport. In this work, we investigate…

Mesoscale and Nanoscale Physics · Physics 2023-01-24 Armando Pezo , Matheus P. Lima , Marcio Costa , Adalberto Fazzio

ZrTe5 is a layered material that exhibits intricate topological effects. Intensive theoretically and experimental efforts have been devoted to try to understand the physics in this materials. In this paper the temperature dependent…

The isochoric thermal conductivity of solid nitrogen has been investigated on four samples of different densities in the temperature interval from 20 K to the onset of melting. In alfa-N2 the isochoric thermal conductivity exhibits a…

Disordered Systems and Neural Networks · Physics 2009-11-10 V. A. Konstantinov , V. G. Manzhelii , V. P. Revyakin , V. V. Sagan

In this work, we demonstrate interfacial charge transfer-driven transport enhancement in few-layer graphene monolayer MoS2 vertical heterostructure field-effect transistor. Raman scattering and Raman intensity mapping results confirm the…

We study a thermoelectric ratchet consisting of an array of disordered nanowires arranged in parallel on top of an insulating substrate, and contacted asymmetrically to two electrodes. Transport is investigated in the Mott hopping regime,…

Mesoscale and Nanoscale Physics · Physics 2016-04-13 Riccardo Bosisio , Geneviève Fleury , Jean-Louis Pichard , Cosimo Gorini

Modifying phonon thermal conductivity in nanomaterials is important not only for fundamental research but also for practical applications. However, the experiments on tailoring the thermal conductivity in nanoscale, especially in…

Mesoscale and Nanoscale Physics · Physics 2018-02-27 Adili Aiyiti , Shiqian Hu , Chengru Wang , Qing Xi , Zhaofang Cheng , Minggang Xia , Yanling Ma , Jianbo Wu , Jie Guo , Qilang Wang , Jun Zhou , Jie Chen , Xiangfan Xu , Baowen Li

Superconductivity in the type-II Weyl semimetal candidate MoTe$_2$ has attracted much attention due to the possible realization of topological superconductivity. Under applied pressure, the superconducting transition temperature is…

Results from transport measurements in individual $W_{x}V_{1-x}O_{2}$ nanowires with varying extents of $W$ doping are presented. An abrupt thermally driven metal-insulator transition (MIT) is observed in these wires and the transition…

Strongly Correlated Electrons · Physics 2015-05-20 Tai-Lung Wu , Luisa Whittaker , Sarbajit Banerjee , G. Sambandamurthy

Nanostructured permanent magnets are gaining increasing interest and importance for applications such as generators and motors. Thermal management is a key concern since performance of permanent magnets decreases with temperature. We…

Materials Science · Physics 2017-10-19 A. D. Volodchenkov , S. Ramirez , R. Samnakay , R. Salgado , Y. Kodera , A. A. Balandin , J. E. Garay

In the modern electronics overheating is one of the major reasons for device failure. Overheating causes irreversible damage to circuit components and can also lead to fire, explosions, and injuries. Accordingly, in the advent of 2D…

Transition metal dichalcogenide (TMD) alloys have attracted great interests in recent years due to their tunable electronic properties, especially the semiconductor-metal phase transition, along with their potential applications in…

Materials Science · Physics 2018-06-13 Xin Qian , Puqing Jiang , Peng Yu , Xiaokun Gu , Zheng Liu , Ronggui Yang

We present low-temperature magnetoconductance measurements on Bi$_{1.5}$Sb$_{0.5}$Te$_{1.8}$Se$_{1.2}$ kinks with ribbon-shaped legs. The conductance displays a clear dependence on the in-plane magnetic field orientation. The conductance…