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Variation in Superconducting Symmetry Against Pressure on Noncentrosymmetric Superconductor Cd2Re2O7 Revealed by 185/187Re Nuclear Quadrupole Resonance
- Source :
- Journal of the Physical Society of Japan. 89:053701
- Publication Year :
- 2020
- Publisher :
- Physical Society of Japan, 2020.
-
Abstract
- We performed $^{185/187}$Re nuclear quadrupole resonance (NQR) measurements under pressure to investigate the superconducting properties of noncentrosymmetric superconductor Cd$_{2}$Re$_{2}$O$_{7}$ under various crystal structures. The pressure dependence of superconducting transition temperature $T_{\rm c}$ determined through ac susceptibility measurements is consistent with the results of previous resistivity measurements [T. C. Kobayashi $et al$., J. Phys. Soc. Jpn. 80, 023715 (2011).]. Below 2.2 GPa, in the nuclear spin-lattice relaxation rate $1/T_{1}$, a clear coherence peak was observed just below $T_{\rm c}$, indicating conventional $s$-wave superconductivity. In contrast, the coherence peak disappears at 3.1 GPa, suggesting a change in superconducting symmetry to the $p$-wave dominant state against pressure.<br />Comment: 5 pages, 5 figures
- Subjects :
- Superconductivity
Physics
Strongly Correlated Electrons (cond-mat.str-el)
Condensed matter physics
Condensed Matter - Superconductivity
Nuclear Theory
FOS: Physical sciences
General Physics and Astronomy
Symmetry (physics)
Superconductivity (cond-mat.supr-con)
Condensed Matter - Strongly Correlated Electrons
Condensed Matter::Superconductivity
Variation (astronomy)
Nuclear quadrupole resonance
Subjects
Details
- ISSN :
- 13474073 and 00319015
- Volume :
- 89
- Database :
- OpenAIRE
- Journal :
- Journal of the Physical Society of Japan
- Accession number :
- edsair.doi.dedup.....523d008c3a3665261a2287ff3e20e731