Exactly solvable quantum spin model with alternating and multiple spin exchange interactions

2006 ◽  
Vol 73 (2) ◽  
Author(s):  
A. A. Zvyagin ◽  
G. A. Skorobagat'ko
Keyword(s):  
Spin Exchange ◽  
Exchange Interactions ◽  
Spin Model ◽  
Quantum Spin ◽  
Exactly Solvable ◽  
Solvable Quantum ◽  
Quantum Spin Model

A solvable quantum spin model: the frustrated Heisenberg star

1995 ◽  
Vol 140-144 ◽  
pp. 1497-1498 ◽  
Author(s):  
J. Richter ◽  
A. Voigt ◽  
S. Krüger
Keyword(s):  
Spin Model ◽  
Quantum Spin ◽  
Solvable Quantum ◽  
Quantum Spin Model

EXACT SOLUTIONS IN A SPATIALLY ANISOTROPIC QUANTUM SPIN LADDER MODEL HAVING TWO- AND FOUR-SPIN EXCHANGE INTERACTIONS

2009 ◽  
Vol 23 (08) ◽  
pp. 1981-2019 ◽  
Author(s):  
J. H. BARRY ◽  
J. D. COHEN ◽  
M. W. MEISEL
Keyword(s):  
Spin Exchange ◽  
Inelastic Neutron Scattering ◽  
Exchange Interactions ◽  
Inelastic Neutron ◽  
Elementary Excitation ◽  
Quantum Spin ◽  
Quantum Model ◽  
Spin Ladder ◽  
Zero Field ◽  
Ladder Model

We consider a two-leg S=1/2 quantum spin ladder model with two-spin (intra-rung) and four-spin (inter-rung) Heisenberg exchange interactions and a uniform magnetic field. Exact mappings are derived connecting the partition function and correlations in the three-parameter quantum model to those known in a two-parameter Ising chain. The quantum phase diagram of the ladder magnet is determined. Static correlations provide pertinent correlation lengths and underlie spatial fluctuation behaviors at arbitrary temperatures, including quantum fluctuations at absolute zero. Dynamic correlations in zero field are used to obtain an exact solution for the inelastic neutron scattering function Sxx(q, ω) at all temperatures, explicitly yielding the elementary excitation spectrum.

scholarly journals Critical exponents for the Reggeon quantum spin model

1978 ◽  
Vol 76 (2) ◽  
pp. 213-219 ◽  
Author(s):  
Richard C. Brower ◽  
Miguel A. Furman ◽  
Moshe Moshe
Keyword(s):  
Critical Exponents ◽  
Spin Model ◽  
Quantum Spin ◽  
Quantum Spin Model

Hysteresis in a quantum spin model

1995 ◽  
Vol 52 (2) ◽  
pp. 1436-1446 ◽  
Author(s):  
Varsha Banerjee ◽  
Sushanta Dattagupta ◽  
Parongama Sen
Keyword(s):  
Spin Model ◽  
Quantum Spin ◽  
Quantum Spin Model

Erratum: Quantum spin model with frustration on the union jack lattice [Phys. Rev. B73, 024407 (2006)]

2007 ◽  
Vol 75 (18) ◽  
Author(s):  
A. Collins ◽  
J. McEvoy ◽  
D. Robinson ◽  
C. J. Hamer ◽  
Zheng Weihong
Keyword(s):  
Spin Model ◽  
Quantum Spin ◽  
Quantum Spin Model
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