Chemistry • Particle Physics • Quantum Physics • Solid State Research

Research report (imported) 2018 - Max Planck Institute for Chemical Physics of Solids

Evidence for Weyl fermions by the local nuclear magnetic resonance techniques

Authors

Baenitz, Michael

Departments

Physik der Quantenmaterie

DOI

10.17617/1.6O

Tantalum has one of the largest quadrupole moments among all elements which makes it a rather useful local probe for excitations of Weyl fermions in the new Weyl semimetal TaP. We found three NQR lines in a good agreement with theoretical calculations including spin orbit coupling. The temperature dependence of the spin lattice relaxation rate is attributed to the magnetic excitations at the Weyl nodes and a good agreement with predictions from theory could be found. The microscopic magnetic resonance techniques therefore provide new insides into the class of Weyl semimetals.
 
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