Direct observation of superconducting gaps in iron-based superconductors by laser ARPES

被引：3
|
作者：
Okazaki, Kozo [1 ]
机构：
[1] Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan
来源：
10TH INTERNATIONAL CONFERENCE ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY (M2S-X) | 2013年 / 449卷
关键词：
D O I：
10.1088/1742-6596/449/1/012019
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have developed a new apparatus for carrying out ultra-high energy resolution laser-excited angle-resolved photoemission spectroscopy (laser ARPES). The achieved energy resolution is similar to 70 mu eV at a sample temperature similar to 1.5 K. As a test case, we have measured the superconducting gap of elemental metal Sn (T-c = 3.7 K). We have used this laser-ARPES apparatus, to directly observe the superconducting gap of various iron-based superconductors. The spectra of FeTe0.6Se0.4 below T-c show a very clear temperature dependent superconducting coherence peak. Preliminary momentum-dependent results indicate an anisotropic superconducting gap in FeTe0.6Se0.4.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Direct observation of superconducting gaps in iron-based superconductors by laser ARPES
    Okazaki, Kozo
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2013, 494 : 54 - 56
  • [2] Effects of Coulomb interactions on the superconducting gaps in iron-based superconductors
    Leong, Zhidong
    Phillips, Philip
    PHYSICAL REVIEW B, 2016, 93 (15)
  • [3] Direct observation of spin-orbit coupling in iron-based superconductors
    Borisenko, S. V.
    Evtushinsky, D. V.
    Liu, Z-H.
    Morozov, I.
    Kappenberger, R.
    Wurmehl, S.
    Buechner, B.
    Yaresko, A. N.
    Kim, T. K.
    Hoesch, M.
    Wolf, T.
    Zhigadlo, N. D.
    NATURE PHYSICS, 2016, 12 (04) : 311 - U145
  • [4] Direct Observation of the Spin Exciton in Andreev Spectroscopy of Iron-Based Superconductors
    Korshunov, Maxim M.
    Kuzmichev, Svetoslav A.
    Kuzmicheva, Tatiana E.
    MATERIALS, 2022, 15 (17)
  • [5] Direct observation of spin-orbit coupling in iron-based superconductors
    Borisenko S.V.
    Evtushinsky D.V.
    Liu Z.-H.
    Morozov I.
    Kappenberger R.
    Wurmehl S.
    Büchner B.
    Yaresko A.N.
    Kim T.K.
    Hoesch M.
    Wolf T.
    Zhigadlo N.D.
    Nature Physics, 2016, 12 (4) : 311 - 317
  • [6] The superconducting fluctuation optical conductivity of iron-based superconductors
    Luu Huu Nguyen
    Le Minh Thu
    Bui Duc Tinh
    The European Physical Journal B, 2023, 96
  • [7] Interlayer coupling in the superconducting state of iron-based superconductors
    Hong, Wenshan
    Zhou, Honglin
    Li, Zezhong
    Li, Yang
    Stuhr, Uwe
    Pokhriyal, Amit
    Ghosh, Haranath
    Tao, Zhen
    Lu, Xingye
    Hu, Jiangping
    Li, Shiliang
    Luo, Huiqian
    PHYSICAL REVIEW B, 2023, 107 (22)
  • [8] Superconducting Gap in s±-Wave Iron-Based Superconductors
    Pradhan, B.
    Goi, S. K.
    Mishra, R. N.
    SPIN, 2018, 8 (02)
  • [9] Magnetic properties of the superconducting state of iron-based superconductors
    Seo, Kangjun
    Fang, Chen
    Bernevig, B. Andrei
    Hu, Jiangping
    PHYSICAL REVIEW B, 2009, 79 (23):
  • [10] The superconducting fluctuation optical conductivity of iron-based superconductors
    Nguyen, Luu Huu
    Thu, Le Minh
    Tinh, Bui Duc
    EUROPEAN PHYSICAL JOURNAL B, 2023, 96 (08):
12345