Programme

P.1 -- Poster, VCTP-46

Date: Tuesday, 5 October 2021

Time: 08:30 - 10:00

Phonon-drag thermopower magnetoquantum oscillations in a monolayer WS$_2$

Dinh Le (1), Phuc V. Huynh (2), Bich N. Tran (3, 4), Hoa T. Le (5)

(1) Center for Theoretical and Computational Physics, University of Education, Hue University, Hue 530000, Viet Nam; (2) Division of Theoretical Physics, Dong Thap University, Cao Lanh 870000, Viet Nam; (3) Faculty of Basic Sciences, Quang Binh University, Quang Binh 510000, Viet Nam; (4) Physics Department, University of Education, Hue University, Hue 530000, Viet Nam; (5) Physics Department, University of Education, Hue University, Hue 530000, Viet Nam.

The phonon-drag thermopower $S^g$ is theoretically studied in a monolayer WS$_2$ in a quantizing magnetic field, considering the electron - 2D acoustic phonon interaction. $S^g$ displays quantum oscillations as a function of magnetic $B$ and temperature $T$. The amplitude of the oscillations is found to increase with increasing $B$ and $T$. The power law $S^g \sim T^\beta$ is also investigated. With the increasing $T$ the exponent $\beta$ decreases.

Presenter: Trần Ngọc Bích