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.

引用

页数：5

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