Quantum phase transition between orbital-selective Mott states in Hund's metals

Julián Rincón, Adriana Moreo, Gonzalo Alvarez, Elbio Dagotto

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

17 Citas (Scopus)

Resumen

We report a quantum phase transition between orbital-selective Mott states, with different localized orbitals, in a Hund's metals model. Using the density matrix renormalization group, the phase diagram is constructed varying the electronic density and Hubbard U, at robust Hund's coupling. We demonstrate that this transition is preempted by charge fluctuations and the emergence of free spinless fermions, as opposed to the magnetically driven Mott transition. The Luttinger correlation exponent is shown to have a universal value in the strong-coupling phase, whereas it is interaction dependent at intermediate couplings. At weak coupling we find a second transition from a normal metal to the intermediate-coupling phase.

Idioma originalInglés estadounidense
Número de artículo241105
PublicaciónPhysical Review B - Condensed Matter and Materials Physics
Volumen90
N.º24
DOI
EstadoPublicada - dic 5 2014
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Materiales electrónicos, ópticos y magnéticos
  • Física de la materia condensada

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