Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS2

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	Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS2
	Wu, SF ; Richard, P ; Wang, XB ; Lian, CS ; Nie, SM ; Wang, JT ; Wang, NL ; Ding, H
刊名	PHYSICAL REVIEW B
	2014
卷号	90 期号:5
ISSN号	1098-0121
通讯作者	Wu, SF (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We have performed polarized Raman scattering measurements on the newly discovered superconductor Nd(O,F)BiS2 (T-c = 4 K). We observe 2 Raman-active modes, with frequencies in accordance with first-principles calculations. One A(1g) phonon mode at 112.4 cm(-1) exhibits a Fano line shape due to electron-phonon coupling. We find a resonance for this mode at 2.45 eV excitation energy. We estimate a 0.68 contribution of this mode to the electron-phonon coupling constant lambda. Our Raman results suggest that the BiS2-based superconductors are possibly phonon-mediated BCS superconductors.
资助信息	CAS [2010Y1JB6]; MOST [2010CB923000, 2011CBA001000, 2011CBA00101, 2012CB821403, 2013CB921703]; NSFC of China [11004232, 11034011/A0402, 11234014, 11274362, 11274356]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59514]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wu, SF,Richard, P,Wang, XB,et al. Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS2[J]. PHYSICAL REVIEW B,2014,90(5).
APA	Wu, SF.,Richard, P.,Wang, XB.,Lian, CS.,Nie, SM.,...&Ding, H.(2014).Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS2.PHYSICAL REVIEW B,90(5).
MLA	Wu, SF,et al."Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS2".PHYSICAL REVIEW B 90.5(2014).