Variation in Superconducting Symmetry Against Pressure on Noncentrosymmetric Superconductor Cd2Re2O7 Revealed by 185/187Re Nuclear Quadrupole Resonance

被引：8

作者：

Kitagawa, Shunsaku ^{[1
]}

Ishida, Kenji ^{[1
]}

Kobayashi, Tatsuo C. ^{[2
]}

Matsubayashi, Yasuhito ^{[3
,4
]}

Hirai, Daigorou ^{[3
]}

Hiroi, Zenji ^{[3
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan

[2] Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan

[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[4] Natl Inst Adv Ind Sci & Technol, Adv Coating Technol Res Ctr, Tsukuba, Ibaraki, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2020年 / 89卷 / 05期

关键词：

PYROCHLORE OXIDE; GPA; PB;

D O I：

10.7566/JPSJ.89.053701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed Re-185/187 nuclear quadrupole resonance (NQR) measurements under pressure to investigate the superconducting properties of noncentrosymmetric superconductor Cd2Re2O7 under various crystal structures. The pressure dependence of superconducting transition temperature T-c determined through ac susceptibility measurements is consistent with the results of previous resistivity measurements [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-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.

引用

页数：4

共 28 条

[1] Pressure-induced superconductivity in ferromagnetic UIr without inversion symmetry [J].

Akazawa, T ;

Hidaka, H ;

Fujiwara, T ;

Kobayashi, TC ;

Yamamoto, E ;

Haga, Y ;

Settai, R ;

Onuki, Y .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (04) :L29-L32

[2]

[Anonymous], UNPUB

[3] Structural transition in the pyrochlore superconductor Cd2Re2O7 observed by Re nuclear quadrupole resonance [J].

Arai, K ;

Kobayashi, K ;

Kodama, K ;

Vyaselev, O ;

Takigawa, M ;

Hanawaa, M ;

Hiroi, Z .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (25) :L461-L466

[4] Heavy fermion superconductivity and magnetic order in noncentrosymmetric CePt3Si -: art. no. 027003 [J].

Bauer, E ;

Hilscher, G ;

Michor, H ;

Paul, C ;

Scheidt, EW ;

Gribanov, A ;

Seropegin, Y ;

Noël, H ;

Sigrist, M ;

Rogl, P .

PHYSICAL REVIEW LETTERS, 2004, 92 (02) :4

[5] A DIAMOND ANVIL CELL FOR THE INVESTIGATION OF SUPERCONDUCTIVITY UNDER PRESSURES OF UP TO 50 GPA - PB AS A LOW-TEMPERATURE MANOMETER [J].

BIRECKOVEN, B ;

WITTIG, J .

JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1988, 21 (09) :841-848

[6] PRESSURE AND TEMPERATURE-DEPENDENCE OF ELECTRICAL-RESISTIVITY OF PB AND SN FROM 1-300-5 AND 0-10 GPA-USE AS CONTINUOUS RESISTIVE PRESSURE MONITOR ACCURATE OVER WIDE TEMPERATURE-RANGE - SUPERCONDUCTIVITY UNDER PRESSURE IN PB, SN, AND IN [J].

EILING, A ;

SCHILLING, JS .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1981, 11 (03) :623-639

[7] Parity-Breaking Phases of Spin-Orbit-Coupled Metals with Gyrotropic, Ferroelectric, and Multipolar Orders [J].

Fu, Liang .

PHYSICAL REVIEW LETTERS, 2015, 115 (02)

[8] Pressure Effect on Superconductivity in Cd2Re2O7 [J].

Fujiwara, K. ;

Morimoto, K. ;

Maeda, E. ;

Nishigori, S. .

INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, 200

[9] Superconductivity at 1 K in Cd2Re2O7 -: art. no. 187001 [J].

Hanawa, M ;

Muraoka, Y ;

Tayama, T ;

Sakakibara, T ;

Yamaura, J ;

Hiroi, Z .

PHYSICAL REVIEW LETTERS, 2001, 87 (18) :187001-1

[10] Superconducting properties of the pyrochlore oxide Cd2Re2O7 [J].

Hiroi, Z ;

Hanawa, M .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2002, 63 (6-8) :1021-1026

← 1 2 3 →