Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session E48: Superconductivity: Spin Properties (NMR, NQR, neutron scattering, etc.)
8:00 AM–10:36 AM,
Tuesday, March 16, 2021
Sponsoring
Unit:
DCMP
Chair: Hyowon Park, University of Illinois at Chicago
Abstract: E48.00009 : LaNiGa2*
9:36 AM–9:48 AM
Live
Presenter:
Phurba Sherpa
(University of California, Davis)
Authors:
Phurba Sherpa
(University of California, Davis)
Nicholas Curro
(University of California, Davis)
Igor Vinograd
(University of California, Davis)
Valentin Taufour
(University of California, Davis)
Jackson Badger
(University of California, Davis)
LaNiGa2 is a layered centrosymmetric superconductor with an exceptionally low-symmetry crystal structure. Spontaneous magnetic fields have been observed at the onset of the superconducting state implying the breaking of time-reversal symmetry. This observation suggests the possibility of triplet pairing in the superconducting state. Many experiments have characterized the properties of this unconventional superconductor in its normal state, but few have been performed in the superconducting state. The recent synthesis of high quality large single crystals of LaNiGa2 allowed us to perform NMR on 139La and 69Ga and characterize the electric field gradient. We report the temperature dependence of the spectra and relaxation rates down to Tc.
*Supported by the UC Lab Fee Program.
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