NMR evidence for enhanced orbital diamagnetism in topologically   nontrivial half-Heusler semimetals
  209Bi nuclear magnetic resonance (NMR) spectroscopy was employed to probe potential spin-orbit effects on orbital diamagnetism in YPtBi and YPdBi crystals. The observed opposite sign and temperature dependent magnitude of 209Bi NMR shifts of both crystals reveal experimental signatures of enhanced orbital diamagnetism induced by spin-orbit interactions. This investigation indicates that NMR isotropic shifts might be beneficial in search of interesting spin-electronic phases among a vast number of topological nontrivial half-Heusler semimetals. 
Chenglong Shi, Xuekui Xi, Zhipeng Hou, Xiaoming Zhang, Guizhou Xu,   Enke Liu, Wenquan Wang, Wenhong Wang, and Guangheng Wu
cond-mat.str-el cond-mat.mtrl-sci