Juana Moreno, Ph.D.

Juana Moreno , PhD
Assistant Professor of Physics

Ph.D., 1997 - Rutgers University

Louisiana State University
Department of Physics & Astronomy
285 Nicholson Hall, Tower Dr.
Baton Rouge, LA 70803-4001
(225) 578-7586-Office

Research Interests

In my research, I have focussed on the experimentally relevant transport and magnetic properties of correlated electron systems, including diluted magnetic semiconductors, heavy fermion compounds and low-dimensional systems. These materials share in common unexpected properties which can not been explained with conventional approaches.

Computer simulations are an increasingly efficient means to study correlated systems. In my research I have used a variety of computational tools, such as the dynamical mean-field theory and the dynamical cluster approximation in the study of diluted magnetic semiconductors and the density matrix renormalization group method in the area of low-dimensional materials.

In the near future, I plan to extend these investigations to nanoscale quantum dots and heterostructures of magnetic semiconductors, where the confined geometry plays a crucial role, to incorporate orbital degrees of freedom in the modeling of heavy-fermions and cuprates, to calculate transport properties in nano systems and to simulate complex materials quantitatively using parameters extracted from first principles calculations.

For information about funding opportunities in our research group follow this link http://www.pirealps.org/.

Current and Selected Publications

• K. Aryanpour, J. Moreno, M. Jarrell, and R. S. Fishman, "Magnetism in Semiconductors: A dynamical mean field study of ferromagnetism in Ga_1-xMn_xAs," Phys. Rev. B 72, 045343 (2005).

• Randy S. Fishman, Juana Moreno, Thomas Maier, and Mark Jarrell, " Thermodynamic Consistency of the Dynamical Mean-Field Theory of the Double-Exchange Model," Phys. Rev. B 71, 180405R (2005).

• J. Moreno, R. S. Fishman and M. Jarrell, "Transition Temperature of a Magnetic Semiconductor with AngularMomentum j," Phys. Rev. Lett. 96, 237204 (2006), selected to appear on the Virtual Journal of Nanoscale Science & Technology.

• M.A. Majidi, J. Moreno, M. Jarrell, and R.S. Fishman, "Dynamics of Impurity and Valence Bands in Ga_1-xMn_xAs within the Dynamical Mean Field Approximation," Phys. Rev. B 74, 115205 (2006).

• Randy S. Fishman, Fernando A. Reboredo, Alex Brandt, and Juana Moreno, "Nature of Perpendicular-to-Parallel Spin Reorientation in a Mn-doped GaAs Quantum Well: Canting or Phase Separation?," Phys. Rev. Lett. 98, 267203 (2007).