Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling

doi:10.1038/s42005-022-01010-1

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	Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling
	Liu, Xin-Yang ; Gao, Yuan 1; Li, Han 2; Jin, Wentao ; Xiang, Junsen 3; Jin, Hai 4; Chen, Ziyu ; Li, Wei 1,5,6; Su, Gang 2,5
刊名	COMMUNICATIONS PHYSICS
	2022
卷号	5 期号:1 页码:233
关键词	HEISENBERG-ANTIFERROMAGNET ADR
ISSN号	2399-3650
DOI	10.1038/s42005-022-01010-1
英文摘要	The quantum spin liquid (QSL) states with no long-range magnetic order even down to zero temperature have recently raised intensive research interest. Here we propose that the spin frustration characteristic of the QSL candidates also make them superior magnetocaloric materials that exhibit prominent cooling effect, especially near the quantum critical points. By simulating the highly frustrated kagome and triangular lattice models, we reveal a significant magnetothermal pumping effect when combing quantum magnets with paramagnetic salts, which can be exploited to design a high-performance cascade demagnetization refrigerator. Moreover, with realistic magnetic compounds YbAlO3 and Na2BaCo(PO4)(2), we find a giant enhancement in the cooling capacity characterized by a great increment rate, e.g., more than 200% when working between 3 K heat sink and 30 mK load. Our work thus paves a promising and viable way for the quantum spin cooling to promote the helium-free refrigeration useful in space applications and quantum technologies. Quantum spin liquids are a series of materials which exhibit an absence of magnetic order down to absolute zero and may have applications for data storage and memory. Here, using numerical simulations, the authors propose that the magnetic frustration in a quantum spin liquid may also lead to pronounced magnetocaloric effects near the quantum critical point with potential application as materials for refrigerants.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27838]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 5.Tsinghua Univ, Tsinghua Ctr Astrophys, Dept Astron, Beijing 100084, Peoples R China 6.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China 7.Beihang Univ, Peng Huanwu Collaborat Ctr Res & Educ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xin-Yang,Gao, Yuan,Li, Han,et al. Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling[J]. COMMUNICATIONS PHYSICS,2022,5(1):233.
APA	Liu, Xin-Yang.,Gao, Yuan.,Li, Han.,Jin, Wentao.,Xiang, Junsen.,...&Su, Gang.(2022).Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling.COMMUNICATIONS PHYSICS,5(1),233.
MLA	Liu, Xin-Yang,et al."Quantum spin liquid candidate as superior refrigerant in cascade demagnetization cooling".COMMUNICATIONS PHYSICS 5.1(2022):233.