Regular Article - Solid State and Materials
Anomalous magneto-thermoelectric transport in biased bilayer phosphorene
Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science and Technology, 210044, Nanjing, China
Accepted: 19 April 2021
Published online: 29 April 2021
We numerically study the thermoelectric transport properties in bilayer phosphorene in the presence of bias voltage under a strong magnetic field. When a bias voltage is applied and the bulk energy gap is closed, it is found that thermoelectric coefficients has similar properties to those of a semimetal. Around the central Landau Level (LL), the transverse thermoelectric conductivity displays a series of peaks, but the longitudinal thermoelectric conductivity oscillates and changes sign. The Nernst signal has a peak at central LL and changes sign near other LLs, while the thermopower has an opposite behavior. Both the thermoelectric conductivities and Nernst signal exhibit remarkable anisotropy, but thermopower exhibits isotropy.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021