Decrease in $^{111}$ Cd knight shift in superconducting Cd $_{2}$ Re $_{2}$ O $_{7}$ ; Evidence for spin-singlet pairing

Sakai, Hironori ; Tokunaga, Yo ; Kambe, Shinsaku ; Kitagawa, Kentaro*; Murakawa, Hiroshi*; Ishida, Kenji*; Ono, Hiroyuki*; Kato, Masaki*; Yoshimura, Kazuyoshi*; Walstedt, R. E.

$^{111}$ Cd NMR measurements have been performed in the superconducting (SC) state of the pyrochlore Cd $_{2}$ Re $_{2}$ O $_{7}$ at T $_{c}$ 1 K, and in a field of less than 3 kOe below $T_{c}$ . The upper critical field at 0.1 K has been determined to be 4 kOe from in situ measurements of the ac susceptibility. A reduction of the Knight shift in the SC state is confirmed. The present results provide strong evidence that this compound has a singlet SC pairing symmetry.

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	73
Number	:	11
Pages	:	p.2940 - 2943
Publication Year/Month	:	2004/11
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Paper URL	:	https://doi.org/10.1143/JPSJ.73.2940
DOI for research data	:
Keywords	:	NMR; Superconductivity; Knight Shift
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Registration No. : A20040533
JAEA Abstracts No. : 330615
Paper Submission No. : 21933

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Decrease in Cd knight shift in superconducting CdReO; Evidence for spin-singlet pairing

Decrease in $^{111}$ Cd knight shift in superconducting Cd $_{2}$ Re $_{2}$ O $_{7}$ ; Evidence for spin-singlet pairing