Monday, July 30, 2012

0910.4374 (Nabyendu Das)

Quantum critical behavior of a magnetic quantum paraelectric    [PDF]

Nabyendu Das
We discuss the interplay between anti-ferromagnetic order and polarization fluctuations in a 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 using scaling arguments. Discussions on achieving various quantum critical points in experiments are also made.
View original: http://arxiv.org/abs/0910.4374

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