Dr. Datta Publishes Paper


Dr. DattaDr. Trinanjan Datta, Assistant Professor of Physics, published a paper entitled "Effects of Magnetic Field, Anisotropy, and Biquadratic Interactions in Type-IIA fcc Antiferromagnets Studied by Linear Spin-Wave Theory" in the February 2012 issue of  Physical Review B . The work was done in collaboration with Dr. Dao-Xin Yao of Sun Yat-sen University, Guangzhou, China. During the summer of 2011, Dr. Datta was invited to and visited the physics department of Sun Yat-sen University to engage in collaborative research work on quantum magnets. The result of that effort is this research article that predicts not only the effect of external magnetic field and anisotropy in three dimensional quantum FCC magnets, but also predicts the neutron scattering spectra and structure factor for MnO and CoO. Such theoretical predictions on magnetic compounds guide material scientists to fabricate novel magnetic devices for modern day technological purposes. Dr. Datta gratefully acknowledges the invitation, kind hospitality, and research funding support from Sun Yat-sen University and Fundamental Research Funds for the Central Universities (China). He also thanks Augusta State University Katherine Reese Pamplin College of Arts and Sciences for partial research funding support through a summer stipend. 

Here is an abstract of the paper along with full text.

A picture from the publication is shown below. This picture shows the neutron scattering intensity for MnO (first and second panel) and CoO (third and fourth panel). The ellipticity in the neutron scattering intensity is a signature of the nearest and next-nearest neighbor magnetic interaction ratio. The picture is courtesy of  Phys. Rev. B 85 , 054409 (2012).

Datta paper