Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N24: Charge density Wave in Kagome Metal
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 237
Sponsoring
Unit:
DCMP
Chair: Qimiao Si, Rice University
Abstract: N24.00003 : A tunable charge density wave in the kagome metal ScV6Sn6*
12:42 PM–1:18 PM
Presenter:
William R Meier
(University of Tennessee Knoxville)
Authors:
David G Mandrus
(University of Tennessee)
William R Meier
(University of Tennessee Knoxville)
Hasitha Suriya Arachchige
(University of Tennessee Knoxville)
Shirin Mozaffari
(University of Tennessee, Knoxville)
Richa Pokharel Madhogaria
(University of Tennessee)
Madalynn Marshall
(Oak Ridge National Lab)
Takahiro Matsuoka
(University of Tennessee)
Robert G Moore
(Oak Ridge National Lab)
Seounghun Kang
(Oak Ridge National Laboratory)
John W Villanova
(Oak Ridge National Laboratory)
Caleb L Allen
(University of Tennessee Knoxville)
Jeremy H Driver
(University of Tennessee Knoxville)
Rui Xue
(University of Tennessee)
Michael A McGuire
(Oak Ridge National Lab)
Raphael P Hermann
(Oak Ridge National Lab)
Mina Yoon
(Oak Ridge National Lab)
I will present evidence of a similar CDW in the HfFe6Ge6-type kagome metal ScV6Sn6 below 92 K. Temperature-dependent physical properties and structural characterization reveal a first-order phase transition into a structurally modulated phase with a wave vector (1/3 1/3 1/3).[1] ScV6Sn6 provides an excellent platform to study CDW order in kagome metals because of the many opportunities for chemical tunability and absence of competing orders. Mysteriously, its sister compounds LuV6Sn6 and YV6Sn6 have no CDW order despite nearly identical electronic structures. I will show how Lu and Y substitution suppresses the CDW in ScV6Sn6 revealing clues about the origins of CDW order in kagome metals.
*WRM acknowledge support from the Gordon and Betty Moore Foundations EPiQS Initiative, Grant GBMF9069.
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