Universität zu Köln

Schenck, H., Pokrovsky, V. L. and Nattermann, T. (2014). Vector Chiral Phases in the Frustrated 2D XY Model and Quantum Spin Chains. Phys. Rev. Lett., 112 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

The phase diagram of the frustrated 2D classical and 1D quantum XY models is calculated analytically. Four transitions are found: the vortex unbinding transitions triggered by strong fluctuations occur above and below the chiral transition temperature. Vortex interaction is short range on small and logarithmic on large scales. The chiral transition, though belonging to the Ising universality class by symmetry, has different critical exponents due to nonlocal interaction. In a narrow region close to the Lifshitz point a reentrant phase transition between paramagnetic and quasiferromagnetic phase appears. Applications to antiferromagnetic quantum spin chains and multiferroics are discussed.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schenck, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pokrovsky, V. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nattermann, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-440693
DOI:	10.1103/PhysRevLett.112.157201
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	112
Number:	15
Date:	2014
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CRITICAL-BEHAVIOR; TRANSITIONS Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/44069