Magnetothermoelectric transport properties in phosphorene

R. Ma, S. W. Liu, M. X. Deng, L. Sheng, D. Y. Xing, and D. N. Sheng

Phys. Rev. B 97, 075407 – Published 7 February 2018

Abstract

We numerically study the electrical and thermoelectric transport properties in phosphorene in the presence of both a magnetic field and disorder. The quantized Hall conductivity is similar to that of a conventional two-dimensional electron gas, but the positions of all the Hall plateaus shift to the left due to the spectral asymmetry, in agreement with the experimental observations. The thermoelectric conductivity and Nernst signal exhibit remarkable anisotropy, and the thermopower is nearly isotropic. When a bias voltage is applied between top and bottom layers of phosphorene, both thermopower and Nernst signal are enhanced and their peak values become large.

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Received 24 July 2017
Revised 19 November 2017

DOI:https://doi.org/10.1103/PhysRevB.97.075407

Physics Subject Headings (PhySH)

Thermoelectric effects Transport phenomena

2-dimensional systems Phosphorene

Tight-binding model

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

R. Ma^1,2,*, S. W. Liu¹, M. X. Deng², L. Sheng^2,3,†, D. Y. Xing^2,3,‡, and D. N. Sheng⁴

¹Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, Nanjing 210044, China
²National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
³Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
⁴Department of Physics and Astronomy, California State University, Northridge, California 91330, USA

^*njrma@hotmail.com
^†shengli@nju.edu.cn
^‡dyxing@nju.edu.cn

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Vol. 97, Iss. 7 — 15 February 2018

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