Session U44: Models of Strongly Correlated Electrons

8:00 AM–11:00 AM, Thursday, March 16, 2006
Baltimore Convention Center - 347

Sponsoring Unit: DCMP
Chair: S.-W. Tsai, University of California, Riverside

Abstract ID: BAPS.2006.MAR.U44.1

Abstract: U44.00001 : First-principles calculations of magnetic transition temperatures

8:00 AM–8:12 AM

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Authors:

  Xiangang Wan
    (University of California, Davis )

  Sergey Savrasov
    (University of California, Davis )

We introduce a method to evaluate magnetic transition temperatures of strongly correlated systems. It is based on a combination of dynamical mean field theory, the local density functional theory, and employs ``magnetic force theorem'' for evaluating exchange constants. The method automatically predicts at a given temperature whether the system is ordered or disordered magnetically. We illustrate the approach on several systems, and discuss its accuracy in comparison with the experiment. The effect of electron-electron correlations on these predictions will be discussed.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.U44.1