Faculty Publications
Raman Scattering In Superconducting Ndo 1-X F X Bis 2 Crystals
Document Type
Article
Keywords
electron-phonon coupling, Raman scattering, superconductive mechanism
Journal/Book/Conference Title
Superconductor Science and Technology
Volume
29
Issue
1
Abstract
The recently discovered layered BiS 2 -based superconductors are of great interest due to their structural similarity to cuprate and iron-pnictide superconductors. We performed Raman scattering measurements on two superconducting crystals NdO 0.5 F 0.5 BiS 2 (T c = 4.5 K) and NdO 0.7 F 0.3 BiS 2 (T c = 4.8 K). We assigned observed Raman phonon modes with the aid of first-principles calculations. The asymmetric phonon mode around 118 cm -1 reveals a small electron-phonon coupling constant λ ∼ 0.16, which is insufficient to generate superconductivity at ∼4.5 K.
Department
Department of Physics
Original Publication Date
1-1-2016
DOI of published version
10.1088/0953-2048/29/1/015007
Repository
UNI ScholarWorks, Rod Library, University of Northern Iowa
Language
en
Recommended Citation
Tian, Yong; Zhang, Anmin; Liu, Kai; Ji, Jianting; Liu, Jianzhong; Zhu, Xiyu; Wen, Hai Hu; Jin, Feng; Ma, Xiaoli; He, Rui; and Zhang, Qing Ming, "Raman Scattering In Superconducting Ndo 1-X F X Bis 2 Crystals" (2016). Faculty Publications. 1177.
https://scholarworks.uni.edu/facpub/1177