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  Despina Louca   Despina Louca
Professor , Experimental Condensed Matter Physics
Ph.D., 1997, Pennsylvania

dl4f@Virginia.EDU email   924-6802 tel 317 JBL Office
  RESEARCH INTERESTS
     

The interactions of the spin, charge and lattice degrees of freedom in solids often lead to the emergence of unique properties that exhibit distinct characteristics under external influences. The class of materials that are of interest includes, but are not limited to, the magnetoresistive perovskite oxides, bulk metallic alloys, superconductors, and multiferroics. Understanding the macroscopic functionality of these systems can be potentially very useful for industrial applications. Louca’s research focuses on understanding their responses as a function of temperature, pressure, and magnetic fields by probing the atomic and magnetic structures and dynamics using scattering techniques performed at national and international neutron and X-ray facilities. The group makes use of analysis tools combined with modeling to examine atomic correlations at very small length scales under extreme conditions, probes lattice dynamics and magnetic interactions. The group is also involved with materials synthesis and characterization of the bulk properties.

  RESEARCH GROUP(S)
     

Metallic Glasses

  SELECTED PUBLICATIONS
     

"Suppression of magnetic coupling by in-plane buckling in SrFeO2", K. Horigane, A. Llobet, and D. Louca, Phys. Rev. Lett. 112, 097001 (2014).

"Intertwining of frustration with magneto-elastic coupling in the multiferroic LuMnO3", S. Yano, D. Louca, S. Chi, M. Matsuda, Y. Qiu, J. R. D. Copley, S. W. Cheong, J. Phys. Soc. JPN 83, 024601 (2014).

"Local strain and anharmonicity in the bonding of Bi2Se3-xTex topological insulators", K. Park, Y. Nomura, R. Arita, A. Llobet, D. Louca, Phys. Rev. B 88, 224108 (2013).

"The hybrid lattice of KxFe2-ySe2: why superconductivity and magnetism can coexist", D. Louca, K. Park, B. Li, J. Neuefeind, J. Yan, Scientific Reports 3, doi:10.1038/srep02047 (2013).

"Magnetic transition broadening and local lattice distortion in the negative thermal expansion antiperovskites Cu1-xSnxNMn3", P. Tong, D. Louca, G. King, A. Llobet, J. C. Lin and Y. P. Sun, Appl. Phys. Lett. 102, 041908 (2013).

"Oxygen mediated magneto-electric coupling in LuMnO3", P. Tong, D. Louca, N. Lee, and S.-W. Cheong, Phys. Rev. B 86, 094419 (2012).

"Possible Link of a Structurally Driven Spin Flip Transition and the Insulator-Metal Transition in the Perovskite La1-xBaxCoO3", P. Tong, J. Yu, Q. Huang, K. Yamada, and D. Louca, Phys. Rev. Lett. 106, 156407 (2011).

  NEWS ITEMS
     

• Louca, et al., Awarded NSF MIRT

• D. Louca, O. Pfister, and M. Williams Promoted