NMR study of charge density wave phase in the kagome metal RbV3Sb5

被引：0

作者：

Zhang, Xin ^{[1
,2
]}

Li, Yongkai ^{[1
]}

Zheng, Jiaxin ^{[2
,3
]}

Zhou, Feng ^{[1
,4
]}

Wu, Quansheng ^{[2
,5
]}

Xi, Xuekui ^{[2
]}

Lau, Yongchang ^{[2
,5
]}

Wang, Zhiwei ^{[1
]}

Wang, Wenhong ^{[4
]}

机构：

[1] Beijing Inst Technol, Ctr Quantum Phys, Sch Phys, Key Lab Adv Optoelect Quantum Architecture & Measu, Beijing 100081, Peoples R China

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

[3] Guangxi Normal Univ, Coll Phys & Technol, Guilin 541004, Guangxi, Peoples R China

[4] Tiangong Univ, Tianjin 300387, Peoples R China

[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2024年 / 124卷 / 09期

基金：

国家重点研发计划; 北京市自然科学基金; 中国国家自然科学基金;

关键词：

GENERALIZED GRADIENT APPROXIMATION; SUPERCONDUCTOR CSV3SB5; STATE; NQR;

D O I：

10.1063/5.0185873

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The mechanism of charge-density-wave (CDW) phase in one-dimensional lattices can be well described in theory. Whether similar mechanism works in two-dimensional systems is still a mystery. In this work, we employed V-51 solid-state nuclear magnetic resonance (NMR) spectroscopy combined with first-principles computations to probe atomic structure and electronic properties at V sites in a quasi-two-dimensional crystal RbV3Sb5. Clear evidence of the CDW phase transition was observed from the temperature-dependent V-51 NMR measurements. The sharp transition of V-51 Knight shifts and electric field gradients (EFG) across the CDW transition supports the view that energy gap is formed by the nesting of partial Fermi surface in accompany with the superlattice formation. The calculated EFG parameters were also compared with our experiments, and the results suggest that the charge modulation of the CDW order is inverse Star-of-David pattern.

引用

页数：6

共 31 条

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