Crystalline electric fields and the magnetic ground state of the novel Heusler intermetallic YbRh 2 Pb
D. A. Sokolov, M. S. Kim, M. C. Aronson, C. Henderson, P. W. Stephens
Abstract
We have synthesized a new intermetallic compound with a distorted Heusler structure, YbRh
2
Pb. We present a study of the magnetic, thermal, and transport properties. Heat capacity measurements revealed that YbRh
2
Pb orders magnetically below T
N
=0.57 K from a paramagnetic state with substantial crystal electric field splitting. Magnetic field further splits the ground state, which leads to the suppression of magnetic order in YbRh
2
Pb.