Bulk sensitive angle-resolved photoelectron spectroscopy on Nd(O,F)BiS2

TMU International Symposium on "New Quantum Phases Emerging from Novel Crystal Structure"

Terashima, K.^1,2 ; Sonoyama, J.^1 ; Sunagawa, M.^1 ; Fujiwara, H.^1 ; Nagayama, T.^1 ; Muro, T.^3 ; Nagao, M.^4 ; Watauchi, S.^4 ; Tanaka, I.^4 ; Okazaki, H.^5 ; Takano, Y.^5 ; Mizuguchi, Y.^6 ; Usui, H.^7 ; Suzuki, K.^7 ; Kuroki, K.^7 ; Wakita, T.^1 ; Muraoka, Y.^1,2 ; Yokoya, T.^1,2

Research Laboratory for Surface Science, Graduate School of Natural Science and Technology, Okayama University, Okayama

700-8530, Japan^1

Research Center of New Functional Materials for Energy Production, Storage and Transport, Okayama University, Okayama

700-8530, Japan^2

Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8, Sayo, Hyogo

679-5198, Japan^3

Center for Crystal Science and Technology, Yamanashi University, Kofu

400-8510, Japan^4

National Institute for Materials Science, 1-2-1 Sengen, Tsukuba

305-0047, Japan^5

Department of Electrical and Electronic Engineering, Tokyo Metropolitan University, 1-1, Minami-osawa, Hachioji

192-0397, Japan^6

Department of Physics, Osaka University, 1-1 Machikaneyama Toyonaka, Osaka

560-0043, Japan^7

关键词: Angle resolved photoelectron spectroscopy;    Bulk electronic structures;    Bulk sensitive;    Layered superconductor;    Soft X-ray;    Vuv light sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/683/1/012003/pdf
DOI  :  10.1088/1742-6596/683/1/012003

来源: IOP

【 摘 要 】

Bulk electronic structure of novel layered superconductor Nd(O,F)BiS2was studied by using soft x-ray angle-resolved photoelectron spectroscopy (ARPES). Electron-like Fermi surface centered at the X(R) point was observed, consistent with earlier ARPES reports on surface-sensitive VUV light source. Based on the comparison of the electronic structure between Nd(O,F)BiS2and La(O,F)BiS2, we discuss possible important factors for the superconductivity in this series of material.