Superconductivity in kagome metal ThRu3Si2

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外文摘要：We report the physical properties of ThRu3Si2 featured with distorted Ru kagome lattice.The combined experiments of resistivity,magnetization and specific heat reveal bulk superconductivity with Te=3.8 K.The specific heat jump and calculated electron-phonon coupling indicate a moderate coupled BCS superconductor.In comparison with LaRu3Si2,the calculated electronic structure in ThRu3Si2 shows an electron-doping effect with electron filling lifted from 100 meV below flat bands to 300 meV above it.This explains the lower superconducting transition temperature and weaker electron correlations observed in ThRu3Si2.Our work suggests the Tc and electronic correlations in the kagome superconductor could have an intimate connection with the flat bands.

外文关键词：

superconductivitykagome latticeflat band

作者：

刘艺、厉静、杨武璋、卢佳依、曹博雅、李华旬、柴万力、武思祺、李佰卓、孙云蕾、焦文鹤、王操、许晓峰、任之、曹光旱

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作者单位：

School of Physics,Zhejiang University,Hangzhou 310058,China

Department of Applied Physics,Zhejiang University of Technology,Hangzhou 310023,China

School of Science,Westlake Institute for Advanced Study,Westlake University,Hangzhou 310064,China

Department of Physics,Shandong University of Technology,Zibo 255049,China

School of Information and Electrical Engineering,Zhejiang University City College,Hangzhou 310015,China

Interdisciplinary Center for Quantum Information,and State Key Laboratory of Silicon and Advanced Semiconductor Materials,Zhejiang University,Hangzhou 310058,China

Collaborative Innovation Centre of Advanced Microstructures,Nanjing University,Nanjing 210093,China

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基金：

国家自然科学基金国家自然科学基金国家自然科学基金浙江省自然科学基金

项目编号：

120500031200433712274369LQ21A040011

出版年：

2024

DOI：

10.1088/1674-1056/ad1c5e

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(5)

参考文献量35