Quantum criticality of spinons

doi:10.1103/PhysRevB.96.220401

	Quantum criticality of spinons
	He, Feng 1,5; Jiang, Yuzhu 1; Yu, Yi-Cong 1,5; Lin, H. -Q.4; Guan, Xi-Wen 1,2,3
刊名	PHYSICAL REVIEW B
	2017-12-07
卷号	96 期号:22
ISSN号	2469-9950
DOI	10.1103/PhysRevB.96.220401
文献子类	Article
英文摘要	Magnon bound states emerging in one-dimensional (1D) spin chains still lack a rigorous understanding. In this Rapid Communication we show that the length-1 spin strings significantly dominate the critical properties of spinons, magnons, and free fermions in the 1D antiferromagnetic spin-1/2 chain. Using the Bethe ansatz solution, we analytically calculate the scaling functions of the thermal and magnetic properties of the model, providing a rigorous understanding of the quantum criticality of spinons. It turns out that the double maxima in specific heat elegantly mark two crossover temperatures fanning out from the critical point, indicating three quantum phases: the Tomonaga-Luttinger liquid (TLL), the quantum critical, and fully polarized ferromagnetic phases. For the TLL phase, the Wilson ratio R-W = 4K(s) remains almost temperature independent, where K-s is the Luttinger parameter. Furthermore, by applying our results, we precisely determine the quantum scalings and critical exponents of all magnetic properties in the ideal 1D spin-1/2 antiferromagnet Cu(C4H4N2)(NO3)(2), recently studied by Kono et al. [Phys. Rev. Lett. 114, 037202 (2015)]. We further find that the magnetization maximum used in experiments is not a good quantity to map out the finite-temperature TLL phase boundary.
WOS关键词	HEISENBERG ANTIFERROMAGNETIC CHAIN ; FINITE-TEMPERATURE ; MAGNETIC-FIELD ; 2 DIMENSIONS ; THERMODYNAMICS ; ENERGY ; BEHAVIOR ; UNIFORM ; POINT
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000417475400001
资助机构	NSFC(11374331) ; NSFC(11374331) ; Key NSFC(11534014) ; Key NSFC(11534014) ; National Key R&D Program of China(2017YFA0304500) ; National Key R&D Program of China(2017YFA0304500) ; NSAF(U1530401) ; NSAF(U1530401) ; NSFC(11374331) ; NSFC(11374331) ; Key NSFC(11534014) ; Key NSFC(11534014) ; National Key R&D Program of China(2017YFA0304500) ; National Key R&D Program of China(2017YFA0304500) ; NSAF(U1530401) ; NSAF(U1530401) ; NSFC(11374331) ; NSFC(11374331) ; Key NSFC(11534014) ; Key NSFC(11534014) ; National Key R&D Program of China(2017YFA0304500) ; National Key R&D Program of China(2017YFA0304500) ; NSAF(U1530401) ; NSAF(U1530401) ; NSFC(11374331) ; NSFC(11374331) ; Key NSFC(11534014) ; Key NSFC(11534014) ; National Key R&D Program of China(2017YFA0304500) ; National Key R&D Program of China(2017YFA0304500) ; NSAF(U1530401) ; NSAF(U1530401)
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/12738]
专题	中国科学院武汉物理与数学研究所
通讯作者	Lin, H. -Q.
作者单位	1.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China 2.Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Hubei, Peoples R China 3.Australian Natl Univ, Res Sch Phys & Engn, Dept Theoret Phys, Canberra, ACT 0200, Australia 4.Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He, Feng,Jiang, Yuzhu,Yu, Yi-Cong,et al. Quantum criticality of spinons[J]. PHYSICAL REVIEW B,2017,96(22).
APA	He, Feng,Jiang, Yuzhu,Yu, Yi-Cong,Lin, H. -Q.,&Guan, Xi-Wen.(2017).Quantum criticality of spinons.PHYSICAL REVIEW B,96(22).
MLA	He, Feng,et al."Quantum criticality of spinons".PHYSICAL REVIEW B 96.22(2017).