Tangent Fermions: Dirac or Majorana Fermions on a Lattice Without Fermion Doubling
Sign Up to like & getrecommendations! Published in 2023 at "Annalen der Physik"
DOI: 10.1002/andp.202300081
Abstract: I. Introduction II. Two-dimensional lattice fermions III. Methods to avoid fermion doubling (sine dispersion, sine plus cosine dispersion, staggered lattice dispersion, linear sawtooth dispersion, tangent dispersion) IV. Topologically protected Dirac cone V. Application: Klein tunneling… read more here.
Keywords: dispersion; tangent fermions; majorana fermions; lattice ... See more keywords
Sea of Majorana fermions from pseudo-scalar superconducting order in three dimensional Dirac materials
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-07298-2
Abstract: We suggest that spin-singlet pseudo-scalar s-wave superconducting pairing creates a two dimensional sea of Majorana fermions on the surface of three dimensional Dirac superconductors (3DDS). This pseudo-scalar superconducting order parameter Δ5, in competition with scalar… read more here.
Keywords: three dimensional; dirac; sea majorana; majorana fermions ... See more keywords
Role of Majorana fermions in high-harmonic generation from Kitaev chain.
Sign Up to like & getrecommendations! Published in 2022 at "Scientific reports"
DOI: 10.1038/s41598-022-10465-9
Abstract: The observation of Majorana fermions as collective excitations in condensed-matter systems is an ongoing quest, and several state-of-the-art experiments have been performed in the last decade. As a potential avenue in this direction, we simulate… read more here.
Keywords: chain; spectroscopy; high harmonic; kitaev ... See more keywords
Platform of chiral Majorana edge modes and its quantum transport phenomena
Sign Up to like & getrecommendations! Published in 2019 at "Communications Physics"
DOI: 10.1038/s42005-019-0250-5
Abstract: Majorana fermions, as electronic quasi-particle modes in solid states, have been under the focus of research due to their exotic physical properties. While the evidence of Majorana fermions as zero-dimensional bound states has been well… read more here.
Keywords: edge modes; chiral majorana; majorana edge; majorana fermions ... See more keywords
Majorana fermions in topological-insulator nanowires: From single superconducting nanowires to Josephson junctions
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.155420
Abstract: Signatures of Majorana-fermion bound states in one-dimensional topological-insulator (TI) nanowires with proximity-effect-induced superconductivity are studied. The phase diagram and energy spectra are calculated for single-TI nanowires, and it is shown that the nanowires can be… read more here.
Keywords: insulator nanowires; winding numbers; majorana fermions; fermions topological ... See more keywords
Model of chiral spin liquids with Abelian and non-Abelian topological phases
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.224420
Abstract: We present a two-dimensional lattice model for quantum spin-1/2 for which the low-energy limit is governed by four flavors of strongly interacting Majorana fermions. We study this low-energy effective theory using two alternative approaches. The… read more here.
Keywords: abelian topological; non abelian; abelian non; model ... See more keywords
Localization and oscillations of Majorana fermions in a two-dimensional electron gas coupled with d-wave superconductors
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.064501
Abstract: We study the localization and oscillation properties of the Majorana fermions that arise in a two-dimensional electron gas (2DEG) with spin-orbit coupling (SOC) and a Zeeman field coupled with a d-wave superconductor. Despite the angular… read more here.
Keywords: electron gas; wave superconductors; two dimensional; majorana fermions ... See more keywords
Scattering Theory on Surface Majorana Fermions by an Impurity in ^{3}He-B.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.118.145301
Abstract: We have formulated the scattering theory on Majorana fermions emerging in the surface bound state of the superfluid ^{3}He B phase (^{3}He-B) by an impurity. By applying the theory to the electron bubble, which is… read more here.
Keywords: surface majorana; majorana fermions; scattering theory; impurity ... See more keywords
Randomly Hopping Majorana Fermions in the Diluted Kitaev System α-Ru_{0.8}Ir_{0.2}Cl_{3}.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.124.047204
Abstract: dc and ac magnetic susceptibility, magnetization, specific heat, and Raman scattering measurements are combined to probe low-lying spin excitations in α-Ru_{1-x}Ir_{x}Cl_{3} (x≈0.2), which realizes a disordered spin liquid. At intermediate energies (ℏω>3 meV), Raman spectroscopy evidences… read more here.
Keywords: system; randomly hopping; majorana fermions; spin ... See more keywords
Majorana fermions go for a ride
Sign Up to like & getrecommendations! Published in 2020 at "Science"
DOI: 10.1126/science.aaz6961
Abstract: Evidence for propagating Majorana quasiparticles is found in a topological superconductor Enrico Fermi described Ettore Majorana as having the mind of a genius. The Majorana fermion, born as a testimony to the truthfulness of mathematical… read more here.
Keywords: majorana fermions; fermions ride;