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
  • [41] PHONON STATES DENSITY OF V3SI AND CR3SI CRYSTALS
    KORSHUNOV, VA
    FIZIKA METALLOV I METALLOVEDENIE, 1984, 58 (05): : 884 - 889
  • [42] DIFFRACTION CONTRAST BEHAVIOR OF GROWN-IN DISLOCATIONS IN V3SI SINGLE-CRYSTALS
    NAKAHARA, S
    MAHAJAN, S
    WERNICK, JH
    CHIN, GY
    JOURNAL OF APPLIED PHYSICS, 1979, 50 (05) : 3552 - 3555
  • [43] INFLUENCE OF PLASTIC-DEFORMATION ON SUPERCONDUCTING PROPERTIES OF V3SI SINGLE-CRYSTALS
    QUYEN, NH
    PAUFLER, P
    BERTHEL, KH
    BERTRAM, M
    KRAMER, U
    NGHIEP, DM
    SANMARTIN, A
    GLADUN, A
    KLEINSTUCK, K
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1979, 56 (01): : 231 - 236
  • [44] HIGH-PRESSURE STUDY OF TRANSFORMING AND NONTRANSFORMING V3SI SINGLE-CRYSTALS
    HUANG, S
    CHU, CW
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1974, 19 (03): : 228 - 228
  • [45] PLASTIC-DEFORMATION OF V3SI SINGLE-CRYSTALS AT ELEVATED-TEMPERATURES
    MAHAJAN, S
    WERNICK, JH
    CHIN, GY
    NAKAHARA, S
    GEBALLE, TH
    APPLIED PHYSICS LETTERS, 1978, 33 (11) : 972 - 974
  • [46] Evidence for two-gap superconductivity in the non-centrosymmetric compound LaNiC2
    Chen, J.
    Jiao, L.
    Zhang, J. L.
    Chen, Y.
    Yang, L.
    Nicklas, M.
    Steglich, F.
    Yuan, H. Q.
    NEW JOURNAL OF PHYSICS, 2013, 15
  • [47] INFLUENCE OF CHEMICAL COMPOSITION WITHIN RANGE OF HOMOGENEITY ON PHASE-TRANSITION AND TRANSITION-TEMPERATURE OF V3SI SINGLE-CRYSTALS .2. DEFECT STRUCTURE OF V3SI SINGLE-CRYSTALS
    PAUFLER, P
    ZEDLER, E
    ULLRICH, HJ
    BERTHEL, KH
    KRAMER, U
    JURISCH, M
    RICHTER, K
    EICHLER, K
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1977, 44 (02): : 499 - 504
  • [48] Observation of two-gap superconductivity in SrFe1.85Co0.15As2 single crystals by scanning tunneling microscopy and spectroscopy
    Park, Jewook
    Khim, Seunghyun
    Jeon, Gun Sang
    Kim, Jun Sung
    Kim, Kee Hoon
    Char, K.
    NEW JOURNAL OF PHYSICS, 2011, 13
  • [49] Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions
    Carabello, Steven
    Lambert, Joseph G.
    Mlack, Jerome
    Dai, Wenqing
    Li, Qi
    Chen, Ke
    Cunnane, Daniel
    Xi, X. X.
    Ramos, Roberto C.
    JOURNAL OF APPLIED PHYSICS, 2016, 120 (12)
  • [50] Specific heat study of ternary iron-silicide superconductor Lu2Fe3Si5:: Evidence for two-gap superconductivity
    Nakajima, Y.
    Li, G. J.
    Tamegai, T.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2008, 468 (15-20): : 1138 - 1140
12345