| Autor: |
Zhao Liu, Zhonghao Liu, Quan Zhuang, Jianjun Ying, Tian Cui |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
npj Computational Materials, Vol 10, Iss 1, Pp 1-8 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2057-3960 |
| DOI: |
10.1038/s41524-024-01463-8 |
| Popis: |
Abstract The d-transition kagome metals provide a novel platform for exploring correlated superconducting state intertwined with charge ordering. However, the force of charge-density-wave (CDW) and superconductivity (SC) formation, and the mechanism underlying electron pairing remain elusive. Here, utilizing our newly developed methodology based on electride states as fingerprints, we propose a novel class of hydrogen-kagome superconductors AH3Li5 (A = C, Si, P) with ideal kagome band characteristics and elucidate the electron-phonon coupling (EPC) mechanism responsible for electron pairing. The representative compressed PH3Li5 and CH3Li5 demonstrates impressive superconducting transition temperatures (T cs) of 120.09 K and 57.18 K, respectively. Importantly, the CDW competes with SC thus resulting in a pressure-driven dome-shaped SC in CH3Li5, where the CDW order was induced by both EPC and Fermi surface nesting. Our study presents a scientific method for identifying high-T c hydrogen-kagome metals and provides new avenues to fundamentally understand the underlying mechanism of CDW and SC, thereby guiding future experimental investigations. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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