We study the "phase diagram" of a Hubbard plaquette with Rashba spin-orbit coupling. We show that the peculiar way in which Rashba coupling breaks the spin-rotational symmetry of the Hubbard model allows a mixing of singlet and triplet components in the ground-state that slows down and it changes the nature of the Mott transition and of the Mott insulating phases.
Pauli metallic ground state in Hubbard clusters with Rashba spin-orbit coupling / Brosco, Valentina; Guerci, Daniele; Capone, Massimo. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 97:12(2018), pp. 1-7. [10.1103/PhysRevB.97.125103]
Pauli metallic ground state in Hubbard clusters with Rashba spin-orbit coupling
Guerci, Daniele;Capone, Massimo
2018-01-01
Abstract
We study the "phase diagram" of a Hubbard plaquette with Rashba spin-orbit coupling. We show that the peculiar way in which Rashba coupling breaks the spin-rotational symmetry of the Hubbard model allows a mixing of singlet and triplet components in the ground-state that slows down and it changes the nature of the Mott transition and of the Mott insulating phases.File in questo prodotto:
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