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Phase diagram of the frustrated Hubbard model

R. Zitzler·N. Tong·Th. Pruschke·R. Bulla
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Abstract

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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R. Zitzler, N. Tong, Th. Pruschke, R. Bulla. 2003-08-11. Phase diagram of the frustrated Hubbard model. https://doi.org/10.1103/physrevlett.93.016406

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