Resonant Raman scattering theory for Kitaev models and their Majorana fermion boundary modes
File(s)1606.02189v1.pdf (1.84 MB)
Accepted version
Author(s)
Perreault, Brent
Knolle, Johannes
Perkins, Natalia B
Burnell, FJ
Type
Journal Article
Abstract
We study the inelastic light scattering response in two- (2D) and three-dimensional (3D) Kitaev spin-liquid models with Majorana spinon band structures in the symmetry classes BDI and D leading to protected gapless surface modes. We present a detailed calculation of the resonant Raman/Brillouin scattering vertex relevant to iridate and ruthenate compounds whose low-energy physics is believed to be proximate to these spin-liquid phases. In the symmetry class BDI, we find that while the resonant scattering on thin films can detect the gapless boundary modes of spin liquids, the nonresonant processes do not couple to them. For the symmetry class D, however, we find that the coupling between both types of light-scattering processes and the low-energy surface states is strongly suppressed. Additionally, we describe the effect of weak time-reversal symmetry breaking perturbations on the bulk Raman response of these systems.
Date Issued
2016-09-26
Date Acceptance
2016-06-07
Citation
Physical review B: Condensed matter and materials physics, 2016, 94 (10)
ISSN
1098-0121
Publisher
American Physical Society
Journal / Book Title
Physical review B: Condensed matter and materials physics
Volume
94
Issue
10
Copyright Statement
Resonant Raman scattering theory for Kitaev models and their Majorana fermion boundary modes
Brent Perreault, Johannes Knolle, Natalia B. Perkins, and F. J. Burnell
Phys. Rev. B 94, 104427 – Published 26 September 2016. ©2016 American Physical Society
Brent Perreault, Johannes Knolle, Natalia B. Perkins, and F. J. Burnell
Phys. Rev. B 94, 104427 – Published 26 September 2016. ©2016 American Physical Society
Subjects
Science & Technology
Physical Sciences
Physics, Condensed Matter
Physics
MOTT-HUBBARD SYSTEMS
HGTE QUANTUM-WELLS
TOPOLOGICAL INSULATORS
HONEYCOMB IRIDATE
SPIN
PHASE
STATE
CRYSTALS
PHYSICS
LIGHT
Publication Status
Published
Article Number
104427