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 S22: Strong Electronic Correlations in Topological Materials: Theory and Experiment
8:00 AM–11:00 AM,
Thursday, March 9, 2023
Room: Room 214
Sponsoring
Unit:
DCMP
Chair: Brian Moritz, SLAC National Accelerator Laboratory
Abstract: S22.00014 : Field-anisotropic geometrical Hall effect via f-d exchange fields in doped pyrochlore molybdates*
10:36 AM–10:48 AM
Presenter:
Hikaru Fukuda
(Univ of Tokyo)
Authors:
Hikaru Fukuda
(Univ of Tokyo)
Kentaro Ueda
(Univ of Tokyo)
Yoshio Kaneko
(RIKEN Center for Emergent Matter Science)
Ryosuke Kurihara
(Tokyo University of Science)
Atsushi Miyake
(Institute for Solid State Physics (ISSP))
Kosuke Karube
(RIKEN Center for Emergent Matter Science)
Masashi Tokunaga
(Institute for Solid State Physics (ISSP))
Yasujiro Taguchi
(RIKEN)
Yoshinori Tokura
(Univ of Tokyo)
We synthesized the single crystals of hole-doped pyrochlore (Tb1-xCax)2Mo2O7 using a floating zone furnace with a laser light source [2] and observed that the Hall resistivity of the barely-metallic sample x = 0.14 exhibits an explicit anisotropy between H//[100] and H//[111]. This behavior can be reasonably explained by the spin chirality of the Tb spins forming 2-in 2-out and 3-in 1-out configurations under respective magnetic fields (H) in real space.
[1] Y. Taguchi et al., Science 291, 5513 (2001).
[2] Y. Kaneko et al., J. Cryst. Growth 533 125435 (2020).
*This work was supported by JSPS/MEXT Grant-in-Aid for Scientific Research(s) (grant no. 21K13871) and CREST (Grant no. JP-MJCR1874) from JST.
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