Formation of Artificial Fermi Surfaces with a Triangular Superlattice on a Conventional Two-Dimensional Electron Gas.
Sign Up to like & getrecommendations! Published in 2023 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c04358
Abstract: Imposing an external periodic electrostatic potential to the electrons confined in a quantum well makes it possible to engineer synthetic two-dimensional band structures, with electronic properties different from those in the host semiconductor. Here we… read more here.
Keywords: fermi surfaces; two dimensional; fermi; artificial fermi ... See more keywords
Euler-obstructed Cooper pairing: Nodal superconductivity and hinge Majorana zero modes
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.104515
Abstract: Since the proposal of monopole Cooper pairing in Ref. [1], considerable research efforts have been dedicated to the study of Cooper pairing order parameters constrained (or obstructed) by the nontrivial normal-state band topology at Fermi… read more here.
Keywords: cooper pairing; topology; fermi surfaces; obstructed cooper ... See more keywords
Unconventional Superconductivity in Systems with Annular Fermi Surfaces: Application to Rhombohedral Trilayer Graphene.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.127.247001
Abstract: We show that in a two-dimensional electron gas with an annular Fermi surface, long-range Coulomb interactions can lead to unconventional superconductivity by the Kohn-Luttinger mechanism. Superconductivity is strongly enhanced when the inner and outer Fermi… read more here.
Keywords: superconductivity; unconventional superconductivity; trilayer graphene; rhombohedral trilayer ... See more keywords
Tunable Superconductivity and Möbius Fermi Surfaces in an Inversion-Symmetric Twisted van der Waals Heterostructure.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.066001
Abstract: We theoretically study a moiré superlattice geometry consisting of mirror-symmetric twisted trilayer graphene surrounded by identical transition metal dichalcogenide layers. We show that this setup allows us to switch on or off and control the… read more here.
Keywords: fermi surfaces; bius fermi; symmetric twisted; tunable superconductivity ... See more keywords
Electronic Structure of Transition-Metal Pnictide Oxides La3T4As4O2 (T = Ni, Cu) from Ab Initio Calculations
Sign Up to like & getrecommendations! Published in 2020 at "Jetp Letters"
DOI: 10.1134/s0021364020040013
Abstract: Electronic structure of the recently synthesized compounds La3T4As4O2 (T = Ni, Cu) are studied using the ab-initio APW+ lo method. A careful analysis of band structures and Fermi surfaces via the Local Density Approximation (LDA),… read more here.
Keywords: fermi surfaces; transition metal; electronic structure; structure ... See more keywords