文献详情
Universality of Heisenberg?Ising chain in external fields
文献类型：期刊
通讯作者：Wu, JD (reprint author), Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China.; Wu, JD (reprint author), Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China.; Yu, R (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.; Yu, R (reprint author), Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano, Beijing 100872, Peoples R China.
期刊名称：JOURNAL OF PHYSICS-CONDENSED MATTER影响因子和分区
年：2020
卷：32
期：4
ISSN：0953-8984
关键词：1-dimensional spin chains; quantum phase transitions; iTEBD
所属部门：物理学系
摘要：Motivated by the recent surge of transverse-field experiments on quasi-one-dimensional (1D) antiferromagnets Sr(Ba)Co2V2O8, we investigate the quantum phase transition (QPT) in a Heisenberg?Ising chain under a combination of two in-plane inter-perpendicular transverse fields and a four-period longitudinal field, where the in-plane transverse field is either uniform or staggered. We show that the model can be unitary mapped to the 1D transverse-field Ising model (1DTFIM) when the x and y? compone ...More
Motivated by the recent surge of transverse-field experiments on quasi-one-dimensional (1D) antiferromagnets Sr(Ba)Co2V2O8, we investigate the quantum phase transition (QPT) in a Heisenberg?Ising chain under a combination of two in-plane inter-perpendicular transverse fields and a four-period longitudinal field, where the in-plane transverse field is either uniform or staggered. We show that the model can be unitary mapped to the 1D transverse-field Ising model (1DTFIM) when the x and y? components of the spin interaction and the four-period field are absent. When these two terms are present, following both analytical and numerical efforts, we demonstrate that the system undergoes a second-order QPT with increasing transverse fields, where the critical exponents as well as the central charge fall into the universality of 1DTFIM. Our results naturally identify the 1DTFIM universality of 1D quantum phase transitions observed in the existed experiments in Sr(Ba)Co2V2O8 with transverse field applied along either [] or [] direction. Upon varying the tuning parameters, a critical surface with 1DTFIM universality is determined and silhouetted to exhibit the general presence of the universality in a much wider scope of models than conventional understanding. Our results provide a broad guiding framework to facilitate the experimental realization of 1DTFIM universality in real materials. ...Hide

DOI：10.1088/1361-648X/ab4c71
百度学术：Universality of Heisenberg?Ising chain in external fields
语言：外文
人气指数：2
浏览次数：2
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [11804221]; Science and Technology Commission of Shanghai MunicipalityScience & Technology Commission of Shanghai Municipality (STCSM) [16DZ2260200]; Ministry of Science and Technology of ChinaMinistry of Science and Technology, China [2016YFA0300504]; National Science Foundation of ChinaNational Natural Science Foundation of China [11674392]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities; Research Funds of Remnin University of China [18XNLG24]; Shanghai talent program
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