Anomalous NMR Magnetic Shifts in CeCoIn_5

B. Simovic; G. B. Martins; J. D. Thompson; J. L. Sarrao; N. J. Curro; P. C. Hammel; P. G. Pagliuso

arxiv: cond-mat/0105175 · v2 · submitted 2001-05-08 · ❄️ cond-mat.str-el · cond-mat.supr-con

Anomalous NMR Magnetic Shifts in CeCoIn₅

N. J. Curro , B. Simovic , P. C. Hammel , P. G. Pagliuso , G. B. Martins , J. L. Sarrao , J. D. Thompson This is my paper

classification ❄️ cond-mat.str-el cond-mat.supr-con

keywords belowcecoinchangesmagneticaboveanisotropicanomalouscouplings

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We report ^{115}In and ^{59}Co Nuclear Magnetic Resonance (NMR) measurements in the heavy fermion superconductor CeCoIn_5 above and below T_c. The hyperfine couplings of the In and Co are anisotropic and exhibit dramatic changes below 50K due to changes in the crystal field level populations of the Ce ions. Below T_c the spin susceptibility is suppressed, indicating singlet pairing.

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Anomalous NMR Magnetic Shifts in CeCoIn₅

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