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Characterization of the valence transition in Yb/sub x/In/sub 1-//sub x/Cu/sub 2/ and anomalous /sup 115/In Knight-shift behavior

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
/sup 115/In nuclear-magnetic-resonance Knight shift studies in Yb/sub x/In/sub 1-//sub x/Cu/sub 2/ microscopically confirm the existence of an anomalous valence transition of Yb ions for some values of x. The rate of variation, as well as the overall variation of the Knight shifts is the largest ever observed in any Yb system. The Knight shifts do not track the susceptibility at low temperatures, the possible implications of which are discussed. Specific-heat results prove the intermediate-valence character of Yb ions in the ground state of these compounds.
Research Organization:
Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400005, In dia
OSTI ID:
6884203
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:4; ISSN PRBMD
Country of Publication:
United States
Language:
English