Microwave response of V3Si single crystals:: Evidence for two-gap superconductivity

被引：33
|
作者：
Nefyodov, YA [1 ]
Shuvaev, AM [1 ]
Trunin, MR [1 ]
机构：
[1] Inst Solid State Phys, Chernogolovka 142432, Moscow Dist, Russia
来源：
EUROPHYSICS LETTERS | 2005年 / 72卷 / 04期
关键词：
D O I：
10.1209/epl/i2005-10269-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The investigation of the temperature dependences of microwave surface impedance and complex conductivity of V3Si single crystals with different stoichiometry allowed to observe a number of peculiarities which are in remarkable contradiction with single-gap Bardeen-Cooper-Schrieffer theory. At the same time, they can be well described by the two-band model of superconductivity, thus strongly evidencing the existence of two distinct energy gaps with zero-temperature values Delta(1) approximate to 1.8 T-c and Delta(2) approximate to 0.95 T-c in V3Si.
引用
收藏
页码：638 / 644
页数：7
相关论文
共 50 条
  • [31] COMPUTER-SIMULATION OF CHANNELING MEASUREMENTS ON V3SI SINGLE-CRYSTALS
    KAUFMANN, R
    MEYER, O
    RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1979, 40 (1-2): : 97 - 104
  • [32] ELASTIC PROPERTIES AND SUPERCONDUCTIVITY OF V3SI AT HIGH-PRESSURE
    CARCIA, PF
    BARSCH, GR
    PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1973, 59 (02): : 595 - 606
  • [33] OBSERVATION OF THE MISSING GAP MODES IN SUPERCONDUCTING V3SI
    HACKL, R
    KAISER, R
    JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (13): : L453 - L458
  • [34] Sample dependence of superconductivity for V3Si under high pressure
    Tanaka, Shigeki
    Miyake, Atsushi
    Kagayama, Tomoko
    Shimizu, Katsuya
    INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010), 2011, 273
  • [35] DEGRADATION OF SUPERCONDUCTIVITY IN A15 V3SI BY EXPLOSIVE COMPRESSION
    STEWART, GR
    OLINGER, B
    NEWKIRK, LR
    PHYSICAL REVIEW B, 1985, 31 (05): : 2704 - 2706
  • [36] INVESTIGATIONS OF THE ENERGY-GAP OF V3SI MONOCRYSTALS
    SCHUMANN, J
    PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1980, 99 (01): : 79 - 90
  • [37] FAR INFRARED MEASUREMENT OF ENERGY GAP OF V3SI
    TANNER, DB
    SIEVERS, AJ
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1971, 16 (03): : 374 - &
  • [38] HEAT-CAPACITY STUDIES OF V3SI CRYSTALS
    HUANG, CC
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1980, 25 (03): : 333 - 333
  • [39] Two-gap superconductivity in the noncentrosymmetric La3Se4 compound
    Kosuth, F.
    Potomova, N.
    Pribulova, Z.
    Kacmarcik, J.
    Naskar, M.
    Inosov, D. S.
    Ash, S.
    Ganguli, A. K.
    Soltys, J.
    Cambel, V.
    Szabo, P.
    Samuely, P.
    PHYSICAL REVIEW B, 2024, 110 (17)
  • [40] Specific-heat evidence for two-gap superconductivity in the ternary-iron silicide Lu2Fe3Si5
    Nakajima, Y.
    Nakagawa, T.
    Tamegai, T.
    Harima, H.
    PHYSICAL REVIEW LETTERS, 2008, 100 (15)
12345