Emergent Weyl Fermion Excitations in TaP Explored by ^{181}Ta Quadrupole Resonance.

Abstract

The ^{181}Ta quadrupole resonance [nuclear quadrupole resonance (NQR)] technique is utilized to investigate the microscopic magnetic properties of the Weyl semimetal TaP. We find three zero-field NQR signals associated with the transition between the quadrupole split levels for Ta with I=7/2 nuclear spin. A quadrupole coupling constant, ν_{Q}=19.250  MHz… (More)
DOI: 10.1103/PhysRevLett.118.236403

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