Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session B70: Iridates
11:30 AM–2:18 PM,
Monday, March 14, 2022
Room: Hyatt Regency Hotel -Jackson Park B
Sponsoring
Unit:
DMP
Chair: Woojin Kim, Stanford University
Abstract: B70.00006 : Experimental signatures of versatile Weyl semimetal in pyrochlore iridate with spin-ice like magnetic orders*
12:54 PM–1:06 PM
Presenter:
Kentaro Ueda
(Univ of Tokyo)
Authors:
Kentaro Ueda
(Univ of Tokyo)
Hiroaki Ishizuka
(Tokyo Institute of Technology, Tokyo)
Markus Kriener
(RIKEN Center for Emergent Matter Science (CEMS))
Denis Maryenko
(RIKEN Center for Emergent Matter Science (CEMS))
Minoru Kawamura
(RIKEN Center for Emergent Matter Science (CEMS))
Masashi Kawasaki
(Tokyo Inst of Tech - Yokohama)
Yoshinori Tokura
(Univ of Tokyo)
Collaborations:
university of Tokyo, Tokyo Institute of Technology, RIKEN Center for Emergent Matter Science (CEMS)
The magnetic-field dependence of resistivity and the Hall conductivity exhibits a plateau and a sharp jump associated with a magnetic-field hysteresis, similar to a liquid-gas-like transition in dipolar spin ice system. Furthermore, the Kondo coupling is controlled by the hydrostatic pressure, revealing that the field-induced displacement of Weyl points in the momentum space strongly depends on the respective electronic state as well as on the Kondo coupling strength.
These observations pave a route toward the engineering of band topology in hybrid quantum materials with relativistic conduction electrons and localized magnetic moments.
*This research was supported by JSPS/MEXT Grant-in-Aid for Scientific Research(s) (grant nos.19K1464, 21K13871, JP19K14649, JP18H03676) and CREST, JST (grant no. JPMJCR16F1).
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