Electron tunneling into superconducting CeRu12

被引：18

作者：

Ekino, T ^{[1
]}

Fujii, H ^{[1
]}

Nakama, T ^{[1
]}

Yagasaki, K ^{[1
]}

机构：

[1] UNIV RYUKYUS,COLL SCI,OKINAWA 90301,JAPAN

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.56.7851

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The superconducting energy gap of CeRu2 has been studied by break-junction tunneling. The observed gap values 2 Delta(0) = 1.9-2.6 meV with T-c = 5.4-6.7 K give the ratio 2 Delta(0)/k(B)T(c) = 4.1-4.4, indicating a strong coupling superconductor. The temperature dependence of the gap value is in good agreement with the BCS prediction.

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页码：7851 / 7854

页数：4

相关论文

共 16 条

[1] DIRECT MEASUREMENT OF QUASIPARTICLE-LIFETIME BROADENING IN A STRONG-COUPLED SUPERCONDUCTOR [J].

DYNES, RC ;

NARAYANAMURTI, V ;

GARNO, JP .

PHYSICAL REVIEW LETTERS, 1978, 41 (21) :1509-1512

[2] Tunneling spectroscopy of the superconducting energy gap in RNi(2)B(2)C (R=Y and Lu) [J].

Ekino, T ;

Fujii, H ;

Kosugi, M ;

Zenitani, Y ;

Akimitsu, J .

PHYSICAL REVIEW B, 1996, 53 (09) :5640-5649

[3]

HUBER JG, 1983, B AM PHYS SOC, V28, P871

[4] FLUX-PINNING, SPECIFIC-HEAT AND MAGNETIC-PROPERTIES OF THE LAVES PHASE SUPERCONDUCTOR CERU2 [J].

HUXLEY, AD ;

PAULSEN, C ;

LABORDE, O ;

THOLENCE, JL ;

SANCHEZ, D ;

JUNOD, A ;

CALEMCZUK, R .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (41) :7709-7718

[5] CeRu2: A magnetic superconductor with extremely small magnetic moments [J].

Huxley, AD ;

deReotier, PD ;

Yaouanc, A ;

Caplan, D ;

Couach, M ;

Lejay, P ;

Gubbens, PCM ;

Mulders, AM .

PHYSICAL REVIEW B, 1996, 54 (14) :R9666-R9669

[6] Superconducting tunneling spectroscopy on epitaxial UPd2Al3 thin films [J].

Jourdan, M ;

Huth, M ;

Hessert, J ;

Adrian, H .

PHYSICA B, 1997, 230 :335-337

[7] TUNNELING ANOMALIES AND THE COEXISTENCE OF FERROMAGNETISM AND SUPERCONDUCTIVITY IN ERRH4B4 FILMS [J].

LIN, LJ ;

GOLDMAN, AM ;

KADIN, AM ;

UMBACH, CP .

PHYSICAL REVIEW LETTERS, 1983, 51 (23) :2151-2154

[8] RU-101 NQR STUDY IN SUPERCONDUCTING CERU2 [J].

MATSUDA, K ;

KOHORI, Y ;

KOHARA, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (08) :2750-2753

[9] THE SUPERCONDUCTING ENERGY-GAP OF BULK UBE13 [J].

MORELAND, J ;

CLARK, AF ;

SOULEN, RJ ;

SMITH, JL .

PHYSICA B, 1994, 194 (pt 2) :1727-1728

[10] EVIDENCE OF MULTIPLE SUPERCONDUCTING PHASES IN CERU2 [J].

NAKAMA, T ;

HEDO, M ;

MAEKAWA, T ;

HIGA, M ;

RESEL, R ;

SUGAWARA, H ;

SETTAI, R ;

ONUKI, Y ;

YAGASAKI, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (05) :1471-1475