Universität zu Köln

Zhang, Zhao, Amelin, Kirill, Wang, Xiao ORCID: 0000-0003-2898-3355, Zou, Haiyuan, Yang, Jiahao, Nagel, Urmas ORCID: 0000-0001-5827-9495, Room, Toomas, Dey, Tusharkanti, Nugroho, Agustinus Agung ORCID: 0000-0002-1785-4008, Lorenz, Thomas ORCID: 0000-0003-4832-5157, Wu, Jianda and Wang, Zhe (2020). Observation of E-8 particles in an Ising chain antiferromagnet. Phys. Rev. B, 101 (22). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

Near the transverse-field-induced quantum critical point of the Ising chain, an exotic dynamic spectrum consisting of exactly eight particles was predicted, which is uniquely described by an emergent quantum integrable field theory with the symmetry of the E-8 Lie algebra, but rarely explored experimentally. Here we use high-resolution terahertz spectroscopy to resolve quantum spin dynamics of the quasi-one-dimensional Ising antiferromagnet BaCo2V2O8 in an applied transverse field. By comparing to an analytical calculation of the dynamical spin correlations, we identify E-8 particles as well as their two-particle excitations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zhang, Zhao UNSPECIFIED UNSPECIFIED UNSPECIFIED Amelin, Kirill UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Xiao UNSPECIFIED orcid.org/0000-0003-2898-3355 UNSPECIFIED Zou, Haiyuan UNSPECIFIED UNSPECIFIED UNSPECIFIED Yang, Jiahao UNSPECIFIED UNSPECIFIED UNSPECIFIED Nagel, Urmas UNSPECIFIED orcid.org/0000-0001-5827-9495 UNSPECIFIED Room, Toomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Dey, Tusharkanti UNSPECIFIED UNSPECIFIED UNSPECIFIED Nugroho, Agustinus Agung UNSPECIFIED orcid.org/0000-0002-1785-4008 UNSPECIFIED Lorenz, Thomas UNSPECIFIED orcid.org/0000-0003-4832-5157 UNSPECIFIED Wu, Jianda UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Zhe UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-329101
DOI:	10.1103/PhysRevB.101.220411
Journal or Publication Title:	Phys. Rev. B
Volume:	101
Number:	22
Date:	2020
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MAGNETIC-FIELD; MODEL; BACO2V2O8 Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/32910