Here is a small sampling of my recent publications:
Here we study the dynamics of a very simple quantum spin model that shows art-of-equilibrium behavior at low temperatures. We characterize its phase behavior as a function of spin-bath coupling, strength of quantum fluctuations and temperature. More recently we have been studying its dynamical behavior after finite-rate cooling and find that in these circumstances it gets in a way reminiscent mental gearses.
If you would like to see the actual paper, please click here.We study the sealing of the coercive field as a function of thickness in a number of ferroelectric materials. Accounting for depolarization corrections in films less than 100 nanometers, we shows that the coercive field obeys a semiempirical sealing law for five decades ranging from 100 microns down to 1 nanometer. More recently we have developed a phenomenological approach towards understanding the conceptual underpinnings of this dramatic scaling.
If you would like to see the actual paper, please click here.There now exist several magnetic materials that do not display conventional spin order. An outstanding example is URu2Si2, a heavy fermion material where the order responsible for the sharp specific heat anomaly at 17K has remained unidentified despite almost twenty years of effort. Motivated by recent nuclear magnetic resonance measurements, my collaborators and I have proposedf incommensurate orbital antiferromagnetism, associated with circulating currents between the uranium ions, to account for the local fields and entropy loss observed at the 17K transition detailed predictions for neutron scattering measurements based on this proposal, so that it can be tested experimentally. Our next step is to explore the local crystal-field physics associated with the iterant excitations, and to study the high field behavior of the proposal incommensurate orbital antiferromagnetism.
If you would like to see a recent paper associated with this topic, please click here.