Abstract
We present 11B nuclear magnetic resonance (NMR) measurements in superconductors Li2(Pd,Pt)3B without inversion symmetry. In Li2Pd3B, the spin lattice relaxation rate 1/T 1 shows a well-defined coherence peak below Tc, and follows an exponential temperature variation exp(-Δ/kBT) at low temperatures. At a magnetic field of 1.46 T, the energy gap Δ was found to be 1.1kBTc, but it recovers to 1.5kBT c at a field of 0.44 T, which is quite close to the value 1.75k BTc for a weak coupling BCS superconductor. This behavior is in contrast to that found in Li2Pt3B where 1/T 1 is proportional to T3, and the difference between the two compounds is ascribed to the different strength of spin orbit coupling.
| Original language | English |
|---|---|
| Pages (from-to) | 348-349 |
| Number of pages | 2 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 77 |
| Issue number | SUPPL.A |
| Publication status | Published - 2008 |
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Keywords
- LiPdB
- LiPtB
- NMR
- Superconductivity
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Nuclear spin-lattice relaxation in non-centrosymmetric superconductors Li2(Pd,Pt)3B. / Kandatsu, M.; Nishiyama, M.; Inada, Yoshihiko; Zheng, Guo-Qing.
In: Journal of the Physical Society of Japan, Vol. 77, No. SUPPL.A, 2008, p. 348-349.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nuclear spin-lattice relaxation in non-centrosymmetric superconductors Li2(Pd,Pt)3B
AU - Kandatsu, M.
AU - Nishiyama, M.
AU - Inada, Yoshihiko
AU - Zheng, Guo-Qing
PY - 2008
Y1 - 2008
N2 - We present 11B nuclear magnetic resonance (NMR) measurements in superconductors Li2(Pd,Pt)3B without inversion symmetry. In Li2Pd3B, the spin lattice relaxation rate 1/T 1 shows a well-defined coherence peak below Tc, and follows an exponential temperature variation exp(-Δ/kBT) at low temperatures. At a magnetic field of 1.46 T, the energy gap Δ was found to be 1.1kBTc, but it recovers to 1.5kBT c at a field of 0.44 T, which is quite close to the value 1.75k BTc for a weak coupling BCS superconductor. This behavior is in contrast to that found in Li2Pt3B where 1/T 1 is proportional to T3, and the difference between the two compounds is ascribed to the different strength of spin orbit coupling.
AB - We present 11B nuclear magnetic resonance (NMR) measurements in superconductors Li2(Pd,Pt)3B without inversion symmetry. In Li2Pd3B, the spin lattice relaxation rate 1/T 1 shows a well-defined coherence peak below Tc, and follows an exponential temperature variation exp(-Δ/kBT) at low temperatures. At a magnetic field of 1.46 T, the energy gap Δ was found to be 1.1kBTc, but it recovers to 1.5kBT c at a field of 0.44 T, which is quite close to the value 1.75k BTc for a weak coupling BCS superconductor. This behavior is in contrast to that found in Li2Pt3B where 1/T 1 is proportional to T3, and the difference between the two compounds is ascribed to the different strength of spin orbit coupling.
KW - LiPdB
KW - LiPtB
KW - NMR
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=46949092637&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=46949092637&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:46949092637
VL - 77
SP - 348
EP - 349
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - SUPPL.A
ER -