Quantum critical behavior of magnetic quantum paraelectrics

Details Quantum critical behavior of magnetic quantum paraelectrics Quantum critical behavior of magnetic quantum paraelectrics

2009-10-22

arxiv.org/abs/0910.4374v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

We discuss the interplay between anti-ferromagnetic order and polarization fluctuations in a {\it magnetic quantum paraelectric}. Using an action where anti-ferromagnetic order parameter couples to the polarization fluctuations and as well as magnetic field, we derive a set of self consistent equations to study both the temperature and the magnetic field dependence of the static dielectric susceptibility. The temperature dependence of dielectric susceptibility near both the anti-ferromagnetic quantum critical point and ferroelectric quantum critical point are described with scaling arguments. Discussions on achieving various quantum critical points in experiments are also made.

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