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Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling

Physics

Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling

X. Liu, Y. Gao, et al.

Explore the groundbreaking research by Xin-Yang Liu and colleagues, revealing how quantum spin liquids offer exceptional cooling effects and enhanced magnetocaloric performance, potentially revolutionizing refrigeration technologies in space and quantum applications.

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Playback language: English
Abstract
This paper proposes that quantum spin liquids (QSLs), materials lacking long-range magnetic order even at absolute zero, are superior magnetocaloric materials exhibiting a prominent cooling effect near quantum critical points. Simulations of kagome and triangular lattice models reveal a significant magnetothermal pumping effect when combining QSLs with paramagnetic salts in a cascade demagnetization refrigerator. Using YbAIO3 and Na2BaCo(PO4)2, the authors demonstrate a giant enhancement in cooling capacity (over 200% between 3 K and 30 mK), paving the way for helium-free refrigeration in space and quantum technologies.
Publisher
Communications Physics
Published On
Sep 21, 2022
Authors
Xin-Yang Liu, Yuan Gao, Han Li, Wentao Jin, Junsen Xiang, Hai Jin, Ziyu Chen, Wei Li, Gang Su
Tags
quantum spin liquids
magnetocaloric effect
cooling capacity
demagnetization refrigerator
quantum critical points
space technologies
kagome lattice

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