Low-temperature quantum critical behaviour of systems with transverse Ising-like intrinsic dynamics
The low-temperature properties and crossover phenomena of d-dimensional transverse Ising-like systems within the influence domain of the quantum critical point are investigated solving the appropriate one-loop renormalization group equations. The phase diagram is obtained near and at d=3 and several sets of critical exponents are determined which describe different responses of a system to quantum fluctuations according to the way of approaching the quantum critical point. The results are in remarkable agreement with experiments for a wide variety of compounds exhibiting a quantum phase transition, as the ferroelectric oxides and other displacive systems.
Year of publication: |
2003
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Authors: | Caramico D'Auria, A. ; De Cesare, L. ; Rabuffo, I. |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 327.2003, 3, p. 442-460
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Publisher: |
Elsevier |
Subject: | Quantum critical point | Crossover effective exponents |
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