Phase diagram of the frustrated Hubbard model

Details Phase diagram of the frustrated Hubbard model Phase diagram of the frustrated Hubbard model

2003-08-11

arxiv.org/abs/cond-mat/0308202v1

Physical Review Letters 93, 016406 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.93.016406

The Mott-Hubbard metal-insulator transition in the paramagnetic phase of the one-band Hubbard model has long been used to describe similar features in real materials like V$_2$O$_3$. Here we show that this transition is hidden inside a rather robust antiferromagnetic insulator even in the presence of comparatively strong magnetic frustration. This result raises the question of the relevance of the Mott-Hubbard metal-insulator transition for the generic phase diagram of the one-band Hubbard model.

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