✦ LIBER ✦

Giant transient Nernst–Ettingshausen effect in nearly gapless materials

✍ Scribed by M. Sasaki; A. Ohnishi; N. Satoh; K. Suga; K. Kindo; K. Inomata; H. Ebina; S.J. Lee

Publisher: Elsevier
Year: 2010
Tongue: English
Weight: 548 KB
Volume: 3
Category: Article
ISSN: 1875-3892
DOI: 10.1016/j.phpro.2010.01.182

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✦ Synopsis

We have measured a pulsed laser induced transient Nernst-Ettingshausen (TNE) effect for semimetal Bi and for nearly gapless materials Bi-Sb and Bi-Te alloy single crystals at 4.2 K and under magnetic fields up to 4 T. We have found the giant longitudinal-TNE (l-TNE) and transverse-TNE (t-TNE) signals for all materials. The l-TNE signals show a quite unusual antisymmetric magnetic field dependence, which suggests a mechanism of bipolar state caused by breakdown of space inversion symmetry.