Single-crystalline transition metal phosphide superconductor WP studied by Raman spectroscopy and first-principles calculations

被引：5

作者：

Zhang, Yanmin ^{[1
]}

Yan, Luo ^{[2
]}

Wu, Wei ^{[1
,3
]}

He, Ge ^{[4
]}

Zhang, Jingsong ^{[1
,3
]}

Ni, Zhuang ^{[1
,3
]}

Jiang, Xingyu ^{[1
,3
]}

Qin, Mingyang ^{[1
,3
]}

Jin, Feng ^{[1
]}

Yuan, Jie ^{[1
,3
,5
]}

Zhu, Beiyi ^{[1
]}

Chen, Qihong ^{[1
]}

Zhou, Liujiang ^{[2
]}

Li, Yangmu ^{[1
,3
]}

Luo, Jianlin ^{[1
,3
,5
]}

Jin, Kui ^{[1
,3
,5
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China

[3] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[4] Bayer Akad Wissensch, Walther Meissner Inst, D-85748 Garching, Germany

[5] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

来源：

PHYSICAL REVIEW B | 2022年 / 105卷 / 17期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

TEMPERATURE; MODES;

D O I：

10.1103/PhysRevB.105.174511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a study of phonon modes and electron-phonon coupling in superconductor WP using anglere-solved polarized Raman spectroscopy. Seven out of twelve Raman-active modes are detected, with frequencies in good accordance by the first-principles calculations. We analyze parallel- and cross-polarized configurations of A(g) and B-3g phonon modes with polarization- and angle-resolved Raman measurements. For the observed seven modes, the total electron-phonon coupling parameter lambda is only about 0.07, which is too small to achieve superconductivity. Our results elucidate that the low-frequency phonon modes play a key role in the superconductivity within the Bardeen-Cooper-Schrieffer theory framework.

引用

页数：7

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