We introduce a method for the solution of the electronic-structure problem in the independent-electron approximation. The method is based upon a variational solution for the density matrix, which is truncated to zero beyond a real-space radius Rc, and becomes exact as Rc→. Most importantly, the computer time scales only linearly with system size. The method is tested in the context of tight-binding models in one and three dimensions.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical Review B|
|State||Published - 1993|
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics