Published June 25, 2008 | Version v1
Journal article Metadata-only

The quantum J1-J1'-J2 spin-1/2 Heisenberg model: influence of the interchain coupling on the ground-state magnetic ordering in two dimensions

Creators

  • 1. School of Physics and Astronomy, Schuster Building, University of Manchester, Manchester M13 9PL (United Kingdom)
  • 2. Institut fuer Theoretische Physik, Universitaet Magdeburg, 39016 Magdeburg (Germany)

Description

We study the phase diagram of the two-dimensional (2D) J1-J1'-J2 spin-1/2 Heisenberg model by means of the coupled cluster method. The effect of the coupling J1' on the Neel and stripe states is investigated. We find that the quantum critical points for the Neel and stripe phases increase as the coupling strength J1' is increased, and an intermediate phase emerges above the region at J1'∼0.6 when J1 = 1. We find indications for a quantum triple point at J1'∼0.60 ± 0.03, J2∼0.33 ± 0.02 for J1 = 1

Availability note (English)

Available from http://dx.doi.org/10.1088/0953-8984/20/25/255251

Additional details

Identifiers

DOI
10.1088/0953-8984/20/25/255251;
PII
S0953-8984(08)74950-6;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
20
Journal Issue
25
Journal Page Range
[6 p.]
ISSN
0953-8984
CODEN
JCOMEL

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40027275
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
COUPLING; GROUND STATES; HEISENBERG MODEL; MAGNETIZATION; PHASE DIAGRAMS; SPIN; TRIPLE POINT; TWO-DIMENSIONAL CALCULATIONS
Descriptors DEC
ANGULAR MOMENTUM; CRYSTAL MODELS; DIAGRAMS; ENERGY LEVELS; INFORMATION; MATHEMATICAL MODELS; PARTICLE PROPERTIES