Record link: 
http://hdl.handle.net/20.500.12708/176786
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Title: 
Negative Magnetoresistance near the Mott Metal–Insulator Transition in the Quantum Spin Liquid Candidate κ-(BEDT-TTF)₂Cu₂(CN)₃
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Citation: 
Kawasugi, Y., Yamazaki, S., Pustogow, A., & Tajima, N. (2023). Negative Magnetoresistance near the Mott Metal–Insulator Transition in the Quantum Spin Liquid Candidate κ-(BEDT-TTF)₂Cu₂(CN)₃. Journal of the Physical Society of Japan, 92(6), Article 065001. https://doi.org/10.7566/JPSJ.92.065001
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Publisher DOI: 
10.7566/JPSJ.92.065001
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Kawasugi, Yoshitaka 
Yamazaki, Shutaro 
Pustogow, Andrej 
Tajima, Naoya 
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Organisational Unit: 
E138-03 - Forschungsbereich Functional and Magnetic Materials 
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Journal: 
Journal of the Physical Society of Japan 
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ISSN: 
0031-9015
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Date (published): 
28-Apr-2023
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Number of Pages: 
2
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Publisher: 
PHYSICAL SOC JAPAN
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Peer reviewed: 
Yes
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Keywords: 
quantum spin liquid; Mott transition; organic conductors; frustrated magnetism; valence bond solid
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Additional information: 
We investigate the in-plane magnetoresistance of the quantum spin liquid candidate κ-(BEDT-TTF)₂Cu₂(CN)₃ near the metal–insulator phase boundary by fine-tuning the uniaxial strain of a thin single crystal. Negative magnetoresistance up to −40% is observed, implying that the insulating state below ∼6 K has lower intrinsic magnetism than the metallic state. The result is consistent with the recent remarks on the nonmagnetic transition to a valence-bond solid ground state.
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Research Areas: 
Quantum Many-body Systems Physics: 100%
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Science Branch: 
1030 - Physik, Astronomie: 100%
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