Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-06-13
Physics
Condensed Matter
Strongly Correlated Electrons
Four pages, one figure. Submitted for publication, April 13, 2000 Revised, Sept 27, 2000
Scientific paper
10.1016/S0038-1098(01)00053-9
The Hohenberg-Kohn theorem of density functional theory (DFT) for the case of electrons interacting with an external magnetic field (that couples to spin only) is examined in more detail than previously. A unexpected generalization is obtained: in certain cases (which include half metallic ferromagnets and magnetic insulators) the ground state, and hence the spin density matrix, is invariant for some non-zero range of a shift in uniform magnetic field. In such cases the ground state energy is not a functional of the spin density matrix alone. The energy gap in an insulator or a half metal is shown to be a ground state property of the N-electron system in magnetic DFT.
Eschrig Helmut
Pickett Warren E.
No associations
LandOfFree
Density Functional Theory of Magnetic Systems Revisited does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Density Functional Theory of Magnetic Systems Revisited, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Density Functional Theory of Magnetic Systems Revisited will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-11873