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Many-body instabilities and mass generation in slow Dirac materials
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Los Alamos National Laboratory, USA.
Number of Authors: 4
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 92, no 4, 045401Article in journal (Refereed) Published
Abstract [en]

Some Kondo insulators are expected to possess topologically protected surface states with linear Dirac spectrum: the topological Kondo insulators. Because the bulk states of these systems typically have heavy effective electron masses, the surface states may exhibit extraordinarily small Fermi velocities that could force the effective fine structure constant of the surface states into the strong coupling regime. Using a tight-binding model, we study the many-body instabilities of these systems and identify regions of parameter space in which the system exhibits spin density wave and charge density wave order.

Place, publisher, year, edition, pages
2015. Vol. 92, no 4, 045401
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-119237DOI: 10.1103/PhysRevB.92.045401ISI: 000357162100005OAI: oai:DiVA.org:su-119237DiVA: diva2:846202
Available from: 2015-08-14 Created: 2015-08-03 Last updated: 2017-12-04Bibliographically approved

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Balatsky, Alexander V.
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