Quantum paramagnet in a π flux triangular lattice Hubbard model
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
We propose the π flux triangular lattice Hubbard model (π THM) as a prototypical setup to stabilize magnetically disordered quantum states of matter in the presence of charge fluctuations. The quantum paramagnetic domain of the π THM that we identify for intermediate Hubbard U is framed by a Dirac semimetal for weak coupling and by 120° Néel order for strong coupling. Generalizing the Klein duality from spin Hamiltonians to tight-binding models, the π THM maps to a Hubbard model which corresponds to the (JH,JK)=(-1,2) Heisenberg-Kitaev model in its strong coupling limit. The π THM provides a promising microscopic testing ground for exotic finite-U spin liquid ground states amenable to numerical investigation.
Details
Originalsprache | Englisch |
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Aufsatznummer | 167201 |
Fachzeitschrift | Physical review letters |
Jahrgang | 114 |
Ausgabenummer | 16 |
Publikationsstatus | Veröffentlicht - 23 Apr. 2015 |
Peer-Review-Status | Ja |