Nonlocal order parameters for states with topological electromagnetic response
نویسندگان
چکیده
منابع مشابه
Topological order parameters for interacting topological insulators.
We propose a topological order parameter for interacting topological insulators, expressed in terms of the full Green's functions of the interacting system. We show that it is exactly quantized for a time-reversal invariant topological insulator, and it can be experimentally measured through the topological magneto-electric effect. This topological order parameter can be applied to both interac...
متن کاملGrowing quantum states with topological order
We discuss a protocol for growing states with topological order in interacting many-body systems using a sequence of flux quanta and particle insertion. We first consider a simple toy model, the superlattice Bose-Hubbard model, to explain all required ingredients. Our protocol is then applied to fractional quantum Hall systems in both, continuum and lattice. We investigate in particular how the...
متن کاملNonlocal electromagnetic response of graphene nanostructures
Arya Fallahi,1,* Tony Low,2,3,4,* Michele Tamagnone,5 and Julien Perruisseau-Carrier5,† 1DESY-Center for Free-Electron Laser Science, Notkestrasse 85, D-22607 Hamburg, Germany 2Department of Physics and Electrical Engineering, Columbia University, New York, New York 10027, USA 3IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA 4Department of Electrical and Computer Enginee...
متن کاملObservation of unidirectional backscattering-immune topological electromagnetic states Citation
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters.
متن کاملComposite Dirac liquids: parent states for symmetric surface topological order
We introduce exotic gapless states—‘composite Dirac liquids’—that can appear at a strongly interacting surface of a three-dimensional electronic topological insulator. Composite Dirac liquids exhibit a gap to all charge excitations but nevertheless feature a single massless Dirac cone built from emergent electrically neutral fermions. These states thus comprise electrical insulators that, inter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2020
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.101.205101