scholarly journals Unconventional pairing symmetry of interacting Dirac fermions on a π -flux lattice

2018 ◽  
Vol 97 (15) ◽  
Author(s):  
Huaiming Guo ◽  
Ehsan Khatami ◽  
Yao Wang ◽  
Thomas P. Devereaux ◽  
Rajiv R. P. Singh ◽  
...  
Keyword(s):  
Pairing Symmetry ◽  
Dirac Fermions ◽  
Flux Lattice

Flux Lattice Melting and Dimensional Crossover in Bi-2212 Single Crystals

1996 ◽  
Vol 6 (12) ◽  
pp. 2327-2354 ◽  
Author(s):  
P. H. Kes ◽  
H. Pastoriza ◽  
T. W. Li ◽  
R. Cubitt ◽  
E. M. Forgan ◽  
...  
Keyword(s):  
Single Crystals ◽  
Dimensional Crossover ◽  
Flux Lattice

Spin-echo observation of radio frequency induced flux lattice annealing (RIFLA) in a type-II superconductor

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-49-Pr10-51
Author(s):  
W. G. Clark ◽  
F. Lefloch ◽  
M. E. Hanson ◽  
W. H. Wong
Keyword(s):  
Radio Frequency ◽  
Spin Echo ◽  
Type Ii ◽  
Type Ii Superconductor ◽  
Flux Lattice

scholarly journals Xenon-1T excess as a possible signal of a sub-GeV hidden sector dark matter

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Amin Aboubrahim ◽  
Michael Klasen ◽  
Pran Nath
Keyword(s):  
Dark Matter ◽  
Particle Physics ◽  
Small Mass ◽  
Big Bang ◽  
Mass Splitting ◽  
Recoil Energy ◽  
Dirac Fermions ◽  
Dark Sector ◽  
Dark Photon ◽  
Physics Model

Abstract We present a particle physics model to explain the observed enhancement in the Xenon-1T data at an electron recoil energy of 2.5 keV. The model is based on a U(1) extension of the Standard Model where the dark sector consists of two essentially mass degenerate Dirac fermions in the sub-GeV region with a small mass splitting interacting with a dark photon. The dark photon is unstable and decays before the big bang nucleosynthesis, which leads to the dark matter constituted of two essentially mass degenerate Dirac fermions. The Xenon-1T excess is computed via the inelastic exothermic scattering of the heavier dark fermion from a bound electron in xenon to the lighter dark fermion producing the observed excess events in the recoil electron energy. The model can be tested with further data from Xenon-1T and in future experiments such as SuperCDMS.

scholarly journals High-frequency rectifiers based on type-II Dirac fermions

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Libo Zhang ◽  
Zhiqingzi Chen ◽  
Kaixuan Zhang ◽  
Lin Wang ◽  
Huang Xu ◽  
...  
Keyword(s):  
High Frequency ◽  
Dynamic Range ◽  
High Sensitivity ◽  
High Dynamic Range ◽  
Anisotropy Ratio ◽  
Dirac Fermions ◽  
Topological States ◽  
Topological Semimetals ◽  
Polarized Surface ◽  
Symmetry Protected

AbstractThe advent of topological semimetals enables the exploitation of symmetry-protected topological phenomena and quantized transport. Here, we present homogeneous rectifiers, converting high-frequency electromagnetic energy into direct current, based on low-energy Dirac fermions of topological semimetal-NiTe2, with state-of-the-art efficiency already in the first implementation. Explicitly, these devices display room-temperature photosensitivity as high as 251 mA W−1 at 0.3 THz in an unbiased mode, with a photocurrent anisotropy ratio of 22, originating from the interplay between the spin-polarized surface and bulk states. Device performances in terms of broadband operation, high dynamic range, as well as their high sensitivity, validate the immense potential and unique advantages associated to the control of nonequilibrium gapless topological states via built-in electric field, electromagnetic polarization and symmetry breaking in topological semimetals. These findings pave the way for the exploitation of topological phase of matter for high-frequency operations in polarization-sensitive sensing, communications and imaging.

Substrate effects on electrical parameters of Dirac fermions in graphene

2021 ◽  
Vol 133 ◽  
pp. 105936
Author(s):  
E. Tiras ◽  
S. Ardali ◽  
H.A. Firat ◽  
E. Arslan ◽  
E. Ozbay
Keyword(s):  
Dirac Fermions ◽  
Electrical Parameters ◽  
Substrate Effects

scholarly journals Localization landscape for Dirac fermions

2020 ◽  
Vol 101 (8) ◽  
Author(s):  
G. Lemut ◽  
M. J. Pacholski ◽  
O. Ovdat ◽  
A. Grabsch ◽  
J. Tworzydło ◽  
...  
Keyword(s):  
Dirac Fermions
Sign in / Sign up

Export Citation Format

Share Document