Evaluation of superconducting gaps in optimally doped Ba(Fe1-xCox)2As2/Fe bilayers by ultrafast time-resolved spectroscopy

被引：4
|
作者：
Bonavolonta, C. [1 ,2 ]
de Lisio, C. [1 ,2 ]
Valentino, M. [2 ]
Parlato, L. [1 ,2 ]
Pepe, G. P. [1 ,2 ]
Kurth, F. [3 ]
Iida, K. [3 ]
机构：
[1] Univ Napoli Federico II, Fac Ingn, Dipartimento Sci Fis, I-80125 Naples, Italy
[2] CNR SPIN, I-80125 Naples, Italy
[3] IFW Dresden, D-01171 Dresden, Germany
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2014年 / 503卷
关键词：
Pump-probe technique; Iron-based superconductor; Superconducting gap; DYNAMICS;
D O I：
10.1016/j.physc.2014.04.013
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Measurements of nonequilibrium quasi-particle relaxation dynamics by using ultrafast pump and probe technique in optimally Co-doped Ba(Fe2As2)/Fe thin film has been reported. Multiple relaxation processes are present with BCS-like temperature-dependent superconducting gaps Delta(0) = (3.67 +/- 0.13) meV and Delta(1) = (6.1 +/- 0.1) meV, which are calculated considering the conventional electron-boson and spin fluctuations pairing mechanism. Then, the value of the electron-phonon coupling constant of lambda = 0.18 has been obtained. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：132 / 135
页数：4
相关论文
共 50 条
  • [31] Superfluid density and field-induced magnetism in Ba(Fe1-xCox)2As2 and Sr(Fe1-xCox)2As2 measured with muon spin relaxation
    Williams, T. J.
    Aczel, A. A.
    Baggio-Saitovitch, E.
    Bud'ko, S. L.
    Canfield, P. C.
    Carlo, J. P.
    Goko, T.
    Kageyama, H.
    Kitada, A.
    Munevar, J.
    Ni, N.
    Saha, S. R.
    Kirschenbaum, K.
    Paglione, J.
    Sanchez-Candela, D. R.
    Uemura, Y. J.
    Luke, G. M.
    PHYSICAL REVIEW B, 2010, 82 (09):
  • [32] Doping dependence of the lattice dynamics in Ba(Fe1-xCox)2As2 studied by Raman spectroscopy
    Chauviere, L.
    Gallais, Y.
    Cazayous, M.
    Sacuto, A.
    Measson, M. A.
    Colson, D.
    Forget, A.
    PHYSICAL REVIEW B, 2009, 80 (09):
  • [33] Determination of the phase diagram of the electron-doped superconductor Ba(Fe1-xCox)2As2
    Chu, Jiun-Haw
    Analytis, James G.
    Kucharczyk, Chris
    Fisher, Ian R.
    PHYSICAL REVIEW B, 2009, 79 (01):
  • [34] Multiple Andreev Reflection Spectroscopy of Optimally Doped Ba(Fe, Ni)2As2 Superconducting Pnictides
    T. E. Kuzmicheva
    S. A. Kuzmichev
    K. S. Pervakov
    V. A. Vlasenko
    JETP Letters, 2020, 112 : 786 - 792
  • [35] Weak-link behavior of grain boundaries in superconducting Ba(Fe1-xCox)2As2 bicrystals
    Lee, S.
    Jiang, J.
    Weiss, J. D.
    Folkman, C. M.
    Bark, C. W.
    Tarantini, C.
    Xu, A.
    Abraimov, D.
    Polyanskii, A.
    Nelson, C. T.
    Zhang, Y.
    Baek, S. H.
    Jang, H. W.
    Yamamoto, A.
    Kametani, F.
    Pan, X. Q.
    Hellstrom, E. E.
    Gurevich, A.
    Eom, C. B.
    Larbalestier, D. C.
    APPLIED PHYSICS LETTERS, 2009, 95 (21)
  • [36] Doping-dependent specific heat study of the superconducting gap in Ba(Fe1-xCox)2As2
    Gofryk, K.
    Sefat, A. S.
    McGuire, M. A.
    Sales, B. C.
    Mandrus, D.
    Thompson, J. D.
    Bauer, E. D.
    Ronning, F.
    PHYSICAL REVIEW B, 2010, 81 (18)
  • [37] Orbital nature of the hole-like Fermi surface in superconducting Ba(Fe1-xCox)2As2
    Mansart, B.
    Brouet, V.
    Papalazarou, E.
    Jensen, M. Fuglsang
    Petaccia, L.
    Gorovikov, S.
    Grum-Grzhimailo, A. N.
    Rullier-Albenque, F.
    Forget, A.
    Colson, D.
    Marsi, M.
    PHYSICAL REVIEW B, 2011, 83 (06)
  • [38] Multiple Andreev Reflection Spectroscopy of Optimally Doped Ba(Fe, Ni)2As2 Superconducting Pnictides
    Kuzmicheva, T. E.
    Kuzmichev, S. A.
    Pervakov, K. S.
    Vlasenko, V. A.
    JETP LETTERS, 2020, 112 (12) : 786 - 792
  • [39] Anomalous Suppression of the Orthorhombic Lattice Distortion in Superconducting Ba(Fe1-xCox)2As2 Single Crystals
    Nandi, S.
    Kim, M. G.
    Kreyssig, A.
    Fernandes, R. M.
    Pratt, D. K.
    Thaler, A.
    Ni, N.
    Bud'ko, S. L.
    Canfield, P. C.
    Schmalian, J.
    McQueeney, R. J.
    Goldman, A. I.
    PHYSICAL REVIEW LETTERS, 2010, 104 (05)
  • [40] Distribution of Optical Spectral Weight in Detwinned Ba(Fe1-xCox)2As2
    Dusza, A.
    Lucarelli, A.
    Chu, J-H.
    Fisher, I. R.
    Degiorgi, L.
    JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2013, 26 (08) : 2603 - 2606
12345