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Proceedings Paper

Spectroscopic study of the charge density wave order in 2H -TaS2
Author(s): J. Zhao; K. Wijayaratne; C. D. Malliakas; M. G. Kanatzidis; D. Y. Chung; G. Gu; U. Chatterjee
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Paper Abstract

We conduct Angle Resolved Photoemission Spectroscopy (ARPES) investigation on 2H-TaS2, a prototypical incommensurate Charge Density Wave (CDW) material. A comparative study of the low-energy electronic structures of 2H-TaS2 and two other related compounds, 2H-TaSe2 and 2H-NbSe2, identifies several generic features of their CDW orders. Firstly, Fermi surface (FS) nesting alone doesn’t seem to give rise to the CDW instability in these compounds. Secondly, partial gapping of the underlying FS surface in the CDW state is common to each of these materials. Finally, the CDW energy gap, unlike the energy gap in a superconductor, is not symmetric with respect to the chemical potential.

Paper Details

Date Published: 8 September 2017
PDF: 8 pages
Proc. SPIE 10357, Spintronics X, 103570Q (8 September 2017); doi: 10.1117/12.2273391
Show Author Affiliations
J. Zhao, Univ. of Virginia (United States)
K. Wijayaratne, Univ. of Virginia (United States)
C. D. Malliakas, Northwestern Univ. (United States)
M. G. Kanatzidis, Northwestern Univ. (United States)
Argonne National Lab. (United States)
D. Y. Chung, Argonne National Lab. (United States)
G. Gu, Brookhaven National Lab. (United States)
U. Chatterjee, Univ. of Virginia (United States)

Published in SPIE Proceedings Vol. 10357:
Spintronics X
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi; Henri Jaffrès, Editor(s)

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