Nonlocal string orders and entanglement spectrum in the spin-1/2 alternating Heisenberg-Ising chain

Guang-Hua Liu (), Wei Li, Gang Su and Guang-Shan Tian

The European Physical Journal B: Condensed Matter and Complex Systems, 2014, vol. 87, issue 5, 1-6

Abstract: By the infinite time-evolving block decimation (iTEBD) technique, the quantum phase transitions (QPTs) and the ground-state properties of a spin-1/2 alternating Heisenberg-Ising chain are investigated. As the Ising coupling is generalized into the ferromagnetic case (J I > 0), in addition to two well-known phases (the antiferromagnetic phase and the disordered dimer phase), an antiferromagnetic stripe phase is induced. Two QPTs at J I =±2 can be described by the singular behavior of the bipartite entanglement entropy and the ground-state energy, and both are verified to be second-order transitions. Nonzero string orders (O s σ , σ=x, y, and z) and doubly degenerate entanglement spectra are observed in the disordered dimer phase, and these characters distinguish the disordered phase from other two phases. Especially, the string order introduced firstly to describe the Haldane phase of spin-1 chain is generalized to the spin-1/2 alternating Heisenberg-Ising chain. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2014
References: Add references at CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1140/epjb/e2014-50150-1 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:87:y:2014:i:5:p:1-6:10.1140/epjb/e2014-50150-1

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2014-50150-1

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().