Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session Q07: Charge Density Wave Systems
3:00 PM–6:00 PM,
Wednesday, March 6, 2024
Room: L100H
Sponsoring
Unit:
DCMP
Chair: R. Matthias Geilhufe, Chalmers Univ of Tech
Abstract: Q07.00008 : Charge Density Wave Displacement Field and Intradomain Chirality in 1T-TaS2*
4:24 PM–4:36 PM
Presenter:
Michael Boyer
(Clark University)
Authors:
Michael Boyer
(Clark University)
Boning Yu
(Clark University)
Ghilles Ainouche
(Clark University)
Susree Mohapatra
(Clark University)
Manoj k Singh
(Clark University)
Bishnu Sharma
(Clark University)
James Huber
(Clark University)
Recent work [1,2] has uncovered an intradomain chirality to the NC-CDW state. This chirality is found in the CDW displacement field, the displacement of individual CDW maxima from their expected average location, and is believed driven by a strong coupling of the CDW state to the atomic lattice. This strong-coupling-origin of CDW chirality in 1T-TaS2 differs from chiral CDW states in other materials where orbital-ordering drives CDW chirality. Here we present our scanning tunneling microscopy (STM) measurements on 1T-TaS2 roughly across the NC-CDW temperature range. We detail the evolution of the domain structure and intradomain chirality. We examine possible topological defects arising in the CDW displacement field.
[1] Yu et al., “Temperature Evolution of Domains and Intradomain Chirality in 1T-TaS2.” PRB, 108, 11421 (2023).
[2] Singh et al., “Lattice-Driven Chiral Charge Density Wave State in 1T-TaS2,” PRB, 106, L081407 (2022).
*This work is supported by NSF Grant No. DMR-1904918.
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