Quantized thermoelectric Hall plateau in the quantum limit of graphite as a nodal line semimetal

Autor:	Kiswandhi, Andhika, Ochi, Tomotaka, Taen, Toshihiro, Sato, Mitsuyuki, Uchida, Kazuhito, Osada, Toshihito
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science Condensed Matter - Strongly Correlated Electrons
Zdroj:	Phys. Rev. B 107, 195106 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.107.195106
Popis:	We performed thermoelectric Hall conductivity $\alpha_{xy}$ measurements on single-crystal graphite in the quantum limit up to 13 T. Both electrical and thermoelectric transport measurements were performed on the same crystal to extract pure $\alpha_{xy}$, avoiding any sample quality dependence. The $\alpha_{xy}$ converges to a plateau in the quantum limit with a linear dependence on temperature. This behavior is analogous to the quantized thermoelectric Hall effect (QTHE) observed in three-dimensional Dirac/Weyl nodal-point semimetals, and experimentally confirms a theoretical proposal on the QTHE in semimetals with nodal lines as in graphite. Comment: 6 pages, 4 figures, with supplemental information (5 pages, 4 figures)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2211.02306 Zobrazit plný text záznamu View this record from Arxiv