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Unconventional fermionic pairing states in a monochromatically tilted optical lattice
Alberto Nocera, Anatoli Polkovnikov, Adrian E. Feiguin
We study the one-dimensional attractive Fermionic Hubbard model under the influence of periodic driving with the time-dependent density matrix renormalization group method. We show…
Non-perturbative effects and indirect exchange interaction between quantum impurities on metallic (111) surfaces
A. Allerdt, R. Žitko, A. E. Feiguin
The (111) surface of noble metals is usually treated as an isolated two dimensional (2D) triangular lattice completely decoupled from the bulk. However, unlike topological insulato…
Coupled spin-1/2 ladders as microscopic models for non-Abelian chiral spin liquids
Po-Hao Huang, Jyong-Hao Chen, Adrain E. Feiguin +2
We construct a two-dimensional (2D) lattice model that is argued to realize a gapped chiral spin liquid with (Ising) non-Abelian topological order. The building blocks are spin-1/2…
Competition between Kondo effect and RKKY physics in graphene magnetism
A. Allerdt, A. E. Feiguin, S. Das Sarma
The cooperative behavior of quantum impurities on 2D materials, such as graphene and bilayer graphene, is characterized by a non-trivial competition between screening (Kondo effect…