UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Hidden charge order of interacting Dirac fermions on the honeycomb lattice

Christou, E; Uchoa, B; Kruger, F; (2018) Hidden charge order of interacting Dirac fermions on the honeycomb lattice. Physical Review B , 98 , Article 161120(R). 10.1103/PhysRevB.98.161120. Green open access

[img]
Preview
Text
Kruger PhysRevB.98.161120.pdf - ["content_typename_Published version" not defined]

Download (456kB) | Preview

Abstract

We consider the extended half-filled Hubbard model on the honeycomb lattice for second nearest-neighbor interactions. Using a functional integral approach, we find that collective fluctuations suppress topological states and instead favor charge ordering, in agreement with previous numerical studies. However, we show that the critical point is not of the putative semimetal-Mott insulator variety. Due to the frustrated nature of the interactions, the ground state is described by a novel hidden metallic charge order with semi-Dirac excitations. We conjecture that this transition is not in the Gross-Neveu universality class.

Type: Article
Title: Hidden charge order of interacting Dirac fermions on the honeycomb lattice
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.98.161120
Publisher version: https://doi.org/10.1103/PhysRevB.98.161120
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/10059536
Downloads since deposit
15Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item