scholarly journals Determination of the Fermi surface and field-induced quasiparticle tunneling around the Dirac nodal loop in ZrSiS

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
C. S. A. Müller ◽  
T. Khouri ◽  
M. R. van Delft ◽  
S. Pezzini ◽  
Y.-T. Hsu ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Quasiparticle Tunneling

The effect of hydrostatic pressure on the Fermi surface of white tin

1979 ◽  
Vol 57 (6) ◽  
pp. 884-889 ◽  
Author(s):  
J. M. Perz ◽  
I. M. Templeton
Keyword(s):  
Hydrostatic Pressure ◽  
Fermi Surface ◽  
Cross Sectional ◽  
Indirect Methods ◽  
Comprehensive Determination ◽  
Shift Technique ◽  
Direct And Indirect Methods ◽  
The Magnetic Field

The derivatives with respect to hydrostatic pressure of 12 extremal cross-sectional areas of the Fermi surface of tetragonal white (β) tin have been measured by the fluid helium de Haas van Alphen phase shift technique. The samples were carefully aligned in situ to have a crystal symmetry axis ([001], [100], or [110]) parallel to the magnetic field. The measured derivatives differ significantly from most values found previously by both direct and indirect methods; it is believed that the present work provides the first reliable comprehensive determination of these quantities. The present experiments also confirm the conclusions of magnetostriction experiments that there is a second orbit normal to [100] on the sixth zone surface not identified in earlier conventional de Haas van Alphen work, and that the third zone extremal areas normal to [001] are larger than previously accepted values determined in de Haas van Alphen studies.

NONSTATIONARY JOSEPHSON EFFECT AND QUASIPARTICLE TUNNELING BETWEEN PARTIALLY-DIELECTRIZED SUPERCONDUCTORS WITH CHARGE-DENSITY WAVES

1993 ◽  
Vol 07 (22) ◽  
pp. 3927-3935 ◽  
Author(s):  
A.M. GABOVICH
Keyword(s):  
Experimental Data ◽  
Fermi Surface ◽  
Charge Density ◽  
Excitation Spectrum ◽  
Josephson Effect ◽  
Tunnel Junctions ◽  
Charge Density Waves ◽  
Density Waves ◽  
Quasiparticle Tunneling ◽  
Current Voltage

The tunnel junctions between superconductors where the Fermi surface (FS) is partially dielectrized are considered. The dielectrization due to Coulomb- and (or) electron-phonon interactions leads to the emergence of the dielectric gap Σ on nested FS sections and the existence of the charge-density waves below temperature T=T d . When T<T c <T d the partially-dielectrized metals become superconductors with a corresponding gap ∆. The voltage dependences of the nonstationary Josephson current and quasiparticle current are calculated for such junctions. The current-voltage (I–V) characteristics involve several Riedel-type singularities and jumps for voltages equal to definite combinations of gaps ∆ and Σ in the fermion excitation spectrum. So, I–V curves are much more complex than the ones for usual BCS-type superconductors. The results for quasiparticle tunneling agree with the experimental data available for oxides.

scholarly journals Accurate determination of the Fermi surface of tetragonal FeS via quantum oscillation measurements and quasiparticle self-consistent GW calculations

2019 ◽  
Vol 99 (13) ◽  
Author(s):  
Taichi Terashima ◽  
Naoki Kikugawa ◽  
David Graf ◽  
Hishiro T. Hirose ◽  
Shinya Uji ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Accurate Determination ◽  
Quantum Oscillation ◽  
Self Consistent

Determination of the fermi surface of monoclinic SrAs3 by Shubnikov dehaas effect

1984 ◽  
Vol 51 (9) ◽  
pp. 757-760 ◽  
Author(s):  
B.L. Zhou ◽  
E. Gmelin ◽  
W. Bauhofer
Keyword(s):  
Fermi Surface

Uniaxial strain dependence of the Fermi surface of tungsten

1977 ◽  
Vol 55 (4) ◽  
pp. 344-355 ◽  
Author(s):  
D. J. Stanley ◽  
J. M. Perz ◽  
M. J. G. Lee ◽  
R. Griessen
Keyword(s):  
Fermi Surface ◽  
Uniaxial Stress ◽  
Cross Sectional ◽  
Quantum Oscillations ◽  
Scattering Phase ◽  
Point Determination ◽  
Derivatives Of ◽  
Homogeneous Strain ◽  
Good Agreement

The derivatives of five representative cross sectional areas of the Fermi surface of tungsten with respect to uniaxial stress and strain along the cube axes, are determined experimentally from simultaneous measurements of quantum oscillations in magnetostriction and torque, and also in sound velocity and torque. The results are resolved into two components, the dependence on volume-conserving tetragonal shear, and the dependence on isotropic dilation. The tetragonal shear dependence is found to be in generally good agreement with the results of KKR calculations based on a fit to the unstrained Fermi surface. The isotropic dilation dependence agrees well with hydrostatic pressure measurements; from these results, the volume derivatives of the scattering phase shifts are deduced. This work is the first step towards a point-by-point determination of the distortion of the Fermi surface of tungsten in a lattice subjected to an arbitrary homogeneous strain.

scholarly journals Determination of the Fermi Surface ofMgB2by the de Haas–van Alphen Effect

2003 ◽  
Vol 91 (3) ◽  
Author(s):  
A. Carrington ◽  
P. J. Meeson ◽  
J. R. Cooper ◽  
L. Balicas ◽  
N. E. Hussey ◽  
...  
Keyword(s):  
Fermi Surface

scholarly journals Fermi-surface selective determination of the g -factor anisotropy in URu2Si2

2019 ◽  
Vol 99 (16) ◽  
Author(s):  
Gaël Bastien ◽  
Dai Aoki ◽  
Gérard Lapertot ◽  
Jean-Pascal Brison ◽  
Jacques Flouquet ◽  
...  
Keyword(s):  
Fermi Surface ◽  
G Factor ◽  
Selective Determination

Photoelectron lifetime determination of Ag(1 1 1) films at the Fermi surface

2001 ◽  
Vol 482-485 ◽  
pp. 752-758 ◽  
Author(s):  
J.F. Sánchez-Royo ◽  
J. Avila ◽  
V. Pérez-Dieste ◽  
M.C. Asensio
Keyword(s):  
Fermi Surface
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