Raman scattering in correlated thin films as a probe of chargeless surface states
File(s)
Accepted version
Author(s)
Perreault, Brent
Knolle, Johannes
Perkins, Natalia B
Burnell, FJ
Type
Journal Article
Abstract
Several powerful techniques exist to detect topologically protected surface states of weakly interacting electronic systems. In contrast, surface modes of strongly interacting systems which do not carry electric charge are much harder to detect. We propose resonant light scattering as a means of probing the chargeless surface modes of interacting quantum spin systems, and illustrate its efficacy by a concrete calculation for the three-dimensional hyperhoneycomb Kitaev quantum spin liquid phase. We show that resonant scattering is required to efficiently couple to this model's sublattice polarized surface modes, comprised of emergent Majorana fermions that result from spin fractionalization. We demonstrate that the low-energy response is dominated by the surface contribution for thin films, allowing identification and characterization of emergent topological band structures.
Date Issued
2016-08-17
Date Acceptance
2016-01-13
Citation
Physical review B: Condensed matter and materials physics, 2016, 94 (6)
ISSN
1098-0121
Publisher
American Physical Society
Journal / Book Title
Physical review B: Condensed matter and materials physics
Volume
94
Issue
6
Copyright Statement
Raman scattering in correlated thin films as a probe of chargeless surface states
Brent Perreault, Johannes Knolle, Natalia B. Perkins, and F. J. Burnell
Phys. Rev. B 94, 060408(R) – Published 17 August 2016. ©2016 American Physical Society
Brent Perreault, Johannes Knolle, Natalia B. Perkins, and F. J. Burnell
Phys. Rev. B 94, 060408(R) – Published 17 August 2016. ©2016 American Physical Society
Subjects
Science & Technology
Physical Sciences
Physics, Condensed Matter
Physics
MOTT-HUBBARD SYSTEMS
EXPERIMENTAL REALIZATION
TOPOLOGICAL-INSULATOR
HONEYCOMB IRIDATE
DIRAC SEMIMETALS
LIGHT-SCATTERING
KAGOME-LATTICE
SPIN-LIQUID
FERMI ARCS
EXCITATIONS
Publication Status
Published
Article Number
060408