南方科技大学知识苑(SUSTech KC): Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na2BaCo(PO4)2

题名	Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na2BaCo(PO4)2
作者	Sheng，Jieming1,2,3,4 ; Wang，Le1,5 ; Candini，Andrea 6; Jiang，Wenrui1,5 ; Huang，Lianglong1,5 ; Xi，Bin 7; Zhao，Jize 8; Ge，Han1 ; Zhao，Nan1 ; Fu，Ying 1,5; Ren，Jun1 ; Yang，Jiong9 ; Miao，Ping 3,4; Tong，Xin 3,4; Yu，Dapeng1,5 ; Wang，Shanmin1 ; Liu，Qihang1 ; Kofu，Maiko 10; Mole，Richard 11; Biasiol，Giorgio 12; Yu，Dehong 11; Zaliznyak，Igor A.13; Mei，Jia Wei1,5,14 ; Wu，Liusuo1,14
通讯作者	Yu，Dehong; Zaliznyak，Igor A.; Mei，Jia Wei; Wu，Liusuo
共同第一作者	Sheng，Jieming; Wang，Le
发表日期	2022-12-15
DOI	10.1073/pnas.2211193119
发表期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 影响因子和分区
ISSN	0027-8424
EISSN	1091-6490
卷号	119 期号:51
摘要	An interplay of geometrical frustration and strong quantum fluctuations in a spin-1/2 triangular-lattice antiferromagnet (TAF) can lead to exotic quantum states. Here, we report the neutron-scattering, magnetization, specific heat, and magnetocaloric studies of the recently discovered spin-1/2 TAF NaBaCo(PO), which can be described by a spin-1/2 easy axis XXZ model. The zero-field neutron diffraction experiment reveals an incommensurate antiferromagnetic ground state with a significantly reduced ordered moment of about 0.54(2) µ/Co. Different magnetic phase diagrams with magnetic fields in the ab plane and along the easy c-axis were extracted based on the magnetic susceptibility, specific heat, and elastic neutron-scattering results. In addition, two-dimensional (2D) spin dispersion in the triangular plane was observed in the high-field polarized state, and microscopic exchange parameters of the spin Hamiltonian have been determined through the linear spin wave theory. Consistently, quantum critical behaviors with the universality class of d = 2 and νz = 1 were established in the vicinity of the saturation field, where a Bose–Einstein condensation (BEC) of diluted magnons occurs. The newly discovered quantum criticality and fractional magnetization phase in this ideal spin-1/2 TAF present exciting opportunities for exploring exotic quantum phenomena.
关键词	Neutron Scattering Quantum Criticality Quantum Magnet Spin Frustration Universal Scaling
相关链接	[Scopus记录]
收录类别	SCI
语种	英语
重要成果	NI论文
学校署名	第一 ; 共同第一 ; 通讯
资助项目	National Key Research and Development Program of China[2021YFA1400400] ; National Key Ramp ; D Program of China[2020YFA0308900] ; National Natural Science Foundation of China[
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000949671800005
出版者	NATL ACAD SCIENCES
ESI学科分类	BIOLOGY & BIOCHEMISTRY;CLINICAL MEDICINE;MULTIDISCIPLINARY;PLANT & ANIMAL SCIENCE;ENVIRONMENT/ECOLOGY;SOCIAL SCIENCES, GENERAL;MICROBIOLOGY;ECONOMICS BUSINESS;IMMUNOLOGY;MATERIALS SCIENCE;MATHEMATICS;SPACE SCIENCE;MOLECULAR BIOLOGY & GENETICS;PHARMACOLOGY & TOXICOLOGY;CHEMISTRY;PSYCHIATRY/PSYCHOLOGY;NEUROSCIENCE & BEHAVIOR;PHYSICS;GEOSCIENCES;AGRICULTURAL SCIENCES;ENGINEERING
来源库	Web of Science
出版状态	正式出版
引用统计	被引频次[WOS]：27
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/497211
专题	理学院_物理系前沿与交叉科学研究院理学院_化学系
作者单位	1.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China 2.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China 3.Institute of High Energy Physics,Chinese Academy of Sciences,Beijing,100049,China 4.Spallation Neutron Source Science Center (CSNS),Dongguan,523803,China 5.Shenzhen Institute for Quantum Science and Engineering,Shenzhen,518055,China 6.Istituto Sintesi Organica e Fotoreattività (ISOF - CNR),Bologna,Via P. Gobetti,101-40129,Italy 7.College of Physics Science and Technology,Yangzhou University,Yangzhou,225002,China 8.School of Physical Science and Technology,Key Laboratory for Magnetism and Magnetic Materials,The Ministry of Education,Lanzhou University,Lanzhou,730000,China 9.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China 10.Japan Proton Accelerator Research Complex (J-PARC) Center,Japan Atomic Energy Agency,Tokai,Ibaraki,319-1195,Japan 11.Australian Nuclear Science and Technology Organisation,Kirrawee,Locked bag 2001, DC,2232,Australia 12.Istituto Officina dei Materiali (IOM - CNR),Laboratorio di Tecnologie Avanzate,Superfici e Catalisi (TASC),Trieste,34149,Italy 13.Condensed Matter Physics and Materials Science Division,Brookhaven National Laboratory,Upton,11973,United States 14.Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China
第一作者单位	物理系; 前沿与交叉科学研究院
通讯作者单位	物理系; 南方科技大学
第一作者的第一单位	物理系
推荐引用方式 GB/T 7714	Sheng，Jieming,Wang，Le,Candini，Andrea,et al. Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na2BaCo(PO4)2[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2022,119(51).
APA	Sheng，Jieming.,Wang，Le.,Candini，Andrea.,Jiang，Wenrui.,Huang，Lianglong.,...&Wu，Liusuo.(2022).Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na2BaCo(PO4)2.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,119(51).
MLA	Sheng，Jieming,et al."Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na2BaCo(PO4)2".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 119.51(2022).

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文件名称/大小	文献类型	版本类型	开放类型	使用许可	操作
2 triangular-lattice（10799KB）	--	--	限制开放	--