Quantum spherical description of an Ising spin glass in a transverse field

1997 ◽  
Vol 55 (9) ◽  
pp. 5623-5626 ◽  
Author(s):  
T. K. Kopec-acute ◽  
R. Pirc
Keyword(s):  
Spin Glass ◽  
Transverse Field ◽  
Ising Spin Glass ◽  
Ising Spin

Phase diagram of the quantum Ising spin glass in a transverse field

1991 ◽  
Vol 44 (22) ◽  
pp. 12583-12585 ◽  
Author(s):  
K. D. Usadel ◽  
G. Büttner ◽  
T. K. Kopeć
Keyword(s):  
Phase Diagram ◽  
Spin Glass ◽  
Transverse Field ◽  
Ising Spin Glass ◽  
Ising Spin

LOW TEMPERATURE LINEAR DYNAMICAL SUSCEPTIBILITY OF THE ISING SPIN GLASS IN A TRANSVERSE FIELD

2000 ◽  
Vol 14 (18) ◽  
pp. 1843-1857 ◽  
Author(s):  
G. BUSIELLO ◽  
R. V. SABUROVA
Keyword(s):  
Low Temperature ◽  
Spin Glass ◽  
Ac Susceptibility ◽  
Dynamical Behavior ◽  
Transverse Field ◽  
Dipole Magnet ◽  
Ising Spin Glass ◽  
Ising Spin ◽  
Ac Field ◽  
Temperature Equilibrium

Low-temperature equilibrium dynamical behavior of the linear ac susceptibility in d-dimensional Ising spin glass with short-range interactions between spins in transverse field is investigated in terms of droplet model. The real part of linear ac susceptibility [Formula: see text] as functions of temperature T and frequency of external ac field ω is calculated. Frequency and temperature dependence of [Formula: see text] shows a glassy behavior. For instance, we find a broad maximum for [Formula: see text] which shifts towards higher temperatures with increasing frequency of ac-field. The temperature of maximum Tf(ω) depends on frequency and increases with frequency up to the magnitude where [Formula: see text] starts to decrease. A qualitative agreement of our calculations with experimental data, for example, in quantum dipole magnet LiHoxY1-xF4 and proton glasses, is found.

The Ising spin glass in a transverse field and the Kondo model

1999 ◽  
Vol 259-261 ◽  
pp. 174-175 ◽  
Author(s):  
M.J. Rozenberg ◽  
D.R. Grempel
Keyword(s):  
Spin Glass ◽  
Transverse Field ◽  
Kondo Model ◽  
Ising Spin Glass ◽  
Ising Spin
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