Analyzing scanning tunneling spectroscopy for Fe-based superconductors and extracting sample density of states

被引：0
|
作者：
Hong, Jongbae [1 ]
机构：
[1] Incheon Natl Univ, Res Inst Basic Sci, Incheon 22012, South Korea
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2019年 / 31卷 / 37期
关键词：
iron-based superconductors; scanning tunneling spectroscopy; sample density of states; T-C; FILMS; GAPS;
D O I：
10.1088/1361-648X/ab26fb
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We extract the density of states (DOS) from the scanning tunneling spectroscopy data for Ba1-xKxFe2As2 superconductor. The obtained sample DOS is composed of two ordinary s-wave types from the band at Gamma point and a linear-like DOS within the s-wave gap from the band at M point in the Brillouin zone, and is consistent with the corresponding data from angle-resolved photoemission spectroscopy. We clarify that the major peak of the tunneling conductance is not related to the DOS but is rather the effect of nonequilibrium coherent tunneling including all coherent spins in the tip and sample.
引用
下载
收藏
页数：7
相关论文
共 50 条
  • [1] Spectroscopic scanning tunneling microscopy insights into Fe-based superconductors
    Hoffman, Jennifer E.
    REPORTS ON PROGRESS IN PHYSICS, 2011, 74 (12)
  • [2] Possible pairing states of the Fe-based superconductors
    Bang, Yunkyu
    Choi, Han-Yong
    PHYSICAL REVIEW B, 2008, 78 (13):
  • [3] Optical and Raman spectroscopy studies on Fe-based superconductors
    Hu, W. Z.
    Zhang, Q. M.
    Wang, N. L.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2009, 469 (9-12): : 545 - 558
  • [4] Electron density of states of Fe-based superconductors: Quantum trajectory Monte Carlo method
    V. A. Kashurnikov
    A. V. Krasavin
    Ya. V. Zhumagulov
    JETP Letters, 2016, 103 : 334 - 340
  • [5] Electron density of states of Fe-based superconductors: Quantum trajectory Monte Carlo method
    Kashurnikov, V. A.
    Krasavin, A. V.
    Zhumagulov, Ya V.
    JETP LETTERS, 2016, 103 (05) : 334 - 340
  • [6] Scanning tunneling spectroscopy on organic superconductors
    Ichimura, Koichi
    Nomura, Kazushige
    Kawamoto, Atsushi
    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 2006, 45 (3 B): : 2264 - 2267
  • [7] Scanning tunneling spectroscopy on organic superconductors
    Ichimura, K
    Nomura, K
    Kawamoto, A
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2006, 45 (3B): : 2264 - 2267
  • [8] Studies of scanning tunneling spectroscopy on iron-based superconductors
    Gu Qiang-Qiang
    Wan Si-Yuan
    Yang Huan
    Wen Hai-Hu
    ACTA PHYSICA SINICA, 2018, 67 (20)
  • [9] Deconvolution of the electronic density of states of tip and sample from scanning tunneling spectroscopy data: Proof of principle
    Koslowski, B.
    Pfeifer, H.
    Ziemann, P.
    PHYSICAL REVIEW B, 2009, 80 (16):
  • [10] Recovery of local density of states using scanning tunneling spectroscopy
    Passoni, M.
    Donati, F.
    Bassi, A. Li
    Casari, C. S.
    Bottani, C. E.
    PHYSICAL REVIEW B, 2009, 79 (04)
12345