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Low-temperature quantum critical behaviour of systems with transverse Ising-like intrinsic dynamics

Author

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  • Caramico D'Auria, A.
  • De Cesare, L.
  • Rabuffo, I.

Abstract

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.

Suggested Citation

  • Caramico D'Auria, A. & De Cesare, L. & Rabuffo, I., 2003. "Low-temperature quantum critical behaviour of systems with transverse Ising-like intrinsic dynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 327(3), pages 442-460.
    • Handle: RePEc:eee:phsmap:v:327:y:2003:i:3:p:442-460
    DOI: 10.1016/S0378-4371(03)00403-5
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    Cited by:

    1. Caramico D’Auria, A. & De Cesare, L. & Mercaldo, M.T. & Rabuffo, I., 2005. "Quantum criticality of a planar Heisenberg ferromagnet in a transverse magnetic field," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 351(2), pages 294-314.

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