Observation of a Raman-active phonon with Fano line shape in the quasi-one-dimensional superconductor K2Cr3As3

被引：21
|
作者：
Zhang, W. -L. [1 ,2 ]
Li, H. [1 ,2 ]
Xia, Dai [1 ,2 ]
Liu, H. W. [1 ,2 ]
Shi, Y. -G. [1 ,2 ]
Luo, J. L. [1 ,2 ,3 ]
Hu, Jiangping [1 ,2 ,3 ,4 ]
Richard, P. [1 ,2 ,3 ]
Ding, H. [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China
[4] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA
来源：
PHYSICAL REVIEW B | 2015年 / 92卷 / 06期
关键词：
TOTAL-ENERGY CALCULATIONS;
D O I：
10.1103/PhysRevB.92.060502
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We performed a polarized Raman scattering study of the quasi-one-dimensional superconductor K2Cr3As3. We detect two A'(1) phonons and three E' phonons. One of the A'(1) modes exhibits a nearly temperature-independent Fano line shape. Based on our first-principles calculations, we ascribe this mode to the in-phase vibrations of Cr atoms within one layer. This observation suggests that the magnetic fluctuations in K2Cr3As3 are coupled to the electronic structure via the lattice.
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页数：5
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