首页|Chiral Pair Density Waves with Residual Fermi Arcs in RbV3Sb5

Chiral Pair Density Waves with Residual Fermi Arcs in RbV3Sb5

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The chiral 2×2 charge order has been reported and confirmed in the kagome superconductor RbV3Sb5,while its interplay with superconductivity remains elusive owing to its lowest superconducting transition temperature Tc of about 0.85 K in the AV3Sb5 family(A=K,Rb,Cs)that severely challenges electronic spectroscopic probes.Here,utilizing dilution-refrigerator-based scanning tunneling microscopy down to 30 mK,we observe chiral 2 × 2 pair density waves with residual Fermi arcs in RbV3Sb5.We find a superconducting gap of 150 μeV with substantial residual in-gap states.The spatial distribution of this gap exhibits chiral 2×2 modulations,signaling a chiral pair density wave(PDW).Our quasi-particle interference imaging of the zero-energy residual states further reveals arc-like patterns.We discuss the relation of the gap modulations with the residual Fermi arcs under the space-momentum correspondence between PDW and Bogoliubov Fermi states.

Xiao-Yu Yan、Hanbin Deng、Tianyu Yang、Guowei Liu、Wei Song、Hu Miao、Zhijun Tu、Hechang Lei、Shuo Wang、Ben-Chuan Lin、Hailang Qin、Jia-Xin Yin

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Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China

Materials Science and Technology Division,Oak Ridge National Laboratory,Oak Ridge,Tennessee 37831,USA

Beijing Key Laboratory of Optoelectronic Functional Materials MicroNano Devices,Department of Physics,Renmin University of China,Beijing 100872,China

Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education),Renmin University of China,Beijing 100872,China

Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area,Shenzhen 518055,China

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National Key R&D Program of ChinaNational Key R&D Program of ChinaNational Key R&D Program of ChinaNational Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Provincial Quantum Science Strategic InitiativeBeijing Natural science FoundationGuangdong Basic and Applied Basic Research Foundation

2023YFA14073002023YFA14065002022YFA14038002023YFF0718403123740601227445912074162GDZX2201001Z2000052022B1515130005

2024

10.1088/0256-307X/41/9/097401

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(9)