Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session L44: Novel Correlated Electron Magnetism
11:15 AM–2:15 PM,
Wednesday, March 7, 2018
LACC
Room: 504
Sponsoring
Unit:
DCMP
Chair: Ryan Baumbach, Natl High Magnetic Field Lab
Abstract ID: BAPS.2018.MAR.L44.10
Abstract: L44.00010 : Giant magnetoresistive effects in antiferomagnetic semiconductors BaMn2Pn2 (Pn = As, Sb, Bi)
1:03 PM–1:15 PM
Presenter:
Katsumi Tanigaki
(Advance Institute for Material Research & Department of Physics, Graduate School of Science, Tohoku University)
Authors:
Khuong Huynh
(Advanced Institute for Materials Research, Tohoku University)
Takuma Ogasawara
(Department of Physics, Graduate School of Science, Tohoku University)
Keita Kitahara
(Department of Physics, Graduate School of Science, Tohoku University)
Takuya Aoyama
(Department of Physics, Graduate School of Science, Tohoku University)
Kenya Ohgushi
(Department of Physics, Graduate School of Science, Tohoku University)
Taimu Tahara
(Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, Osaka University)
Takanori Kida
(Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, Osaka University)
Masayuki Hagiwara
(Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, Osaka University)
Katsumi Tanigaki
(Advance Institute for Material Research & Department of Physics, Graduate School of Science, Tohoku University)
We will describe the first systematic observations on the magnetotransport properties of BaMn2Pn2 compounds under a wide range of magnetic fields (B) and temperatures (T). All three compounds show very large negative magnetoresistance (MR) with complex dependencies on B and T. When Pn elements were changed from As to Bi, the observed MR changed systematically in both its magnitude and B-dependence. In the extreme B regime, the MR of BaMn2Bi2 becomes the largest among the BaMn2Pn2’s in the smallest B-range.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.L44.10
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