scholarly journals Two-dimensional Josephson vortex lattice and anomalously slow decay of the Fraunhofer oscillations in a ballistic SNS junction with a warped Fermi surface

2016 ◽  
Vol 94 (9) ◽  
Author(s):  
V. P. Ostroukh ◽  
B. Baxevanis ◽  
A. R. Akhmerov ◽  
C. W. J. Beenakker
Keyword(s):  
Fermi Surface ◽  
Vortex Lattice ◽  
Two Dimensional ◽  
Josephson Vortex ◽  
Slow Decay ◽  
Sns Junction

scholarly journals Deformation of the Fermi surface of a spinless two-dimensional electron gas in presence of an anisotropic Coulomb interaction potential

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Orion Ciftja
Keyword(s):  
Fermi Surface ◽  
Coulomb Interaction ◽  
Interaction Potential ◽  
Fermi Liquid ◽  
Energy State ◽  
Electron Gas ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dimensional Electron Gas

AbstractWe consider the stability of the circular Fermi surface of a two-dimensional electron gas system against an elliptical deformation induced by an anisotropic Coulomb interaction potential. We use the jellium approximation for the neutralizing background and treat the electrons as fully spin-polarized (spinless) particles with a constant isotropic (effective) mass. The anisotropic Coulomb interaction potential considered in this work is inspired from studies of two-dimensional electron gas systems in the quantum Hall regime. We use a Hartree–Fock procedure to obtain analytical results for two special Fermi liquid quantum electronic phases. The first one corresponds to a system with circular Fermi surface while the second one corresponds to a liquid anisotropic phase with a specific elliptical deformation of the Fermi surface that gives rise to the lowest possible potential energy of the system. The results obtained suggest that, for the most general situations, neither of these two Fermi liquid phases represent the lowest energy state of the system within the framework of the family of states considered in this work. The lowest energy phase is one with an optimal elliptical deformation whose specific value is determined by a complex interplay of many factors including the density of the system.

scholarly journals A Two Dimensional Fermi Liquid. Part 3: The Fermi Surface

2004 ◽  
Vol 247 (1) ◽  
pp. 113-177 ◽  
Author(s):  
Joel Feldman ◽  
Horst Kn�rrer ◽  
Eugene Trubowitz
Keyword(s):  
Fermi Surface ◽  
Fermi Liquid ◽  
Two Dimensional ◽  
Liquid Part

Calculation of the shear modulus of a two-dimensional vortex lattice

1994 ◽  
Vol 49 (22) ◽  
pp. 16074-16077 ◽  
Author(s):  
R. Šášik ◽  
D. Stroud
Keyword(s):  
Shear Modulus ◽  
Vortex Lattice ◽  
Two Dimensional

IN-PLANE CURRENT DRIVEN JOSEPHSON-VORTEX LATTICE IN HIGH-Tc CUPRATES

2005 ◽  
Vol 19 (01n03) ◽  
pp. 439-441
Author(s):  
QING-HU CHEN ◽  
XIAO HU
Keyword(s):  
Magnetic Fields ◽  
Lorentz Force ◽  
Vortex Lattice ◽  
Melting Transition ◽  
Josephson Vortex ◽  
Small Current ◽  
High Tc ◽  
Current Regime ◽  
Vortex Systems ◽  
High Tc Cuprates

We performed simulations on in-plane current driven Josephson vortex systems in high- T c cuprates at weak parallel magnetic fields and /or low anisotropies. It is found that the in-plane resistivity is Lorentz-force dependent at small current regime below the melting transition. As the current increases, the Josephson vortex lattice melts dynamically, the Lorentz-force independence of resistivity reappears. These results are possibly related to the experiments on YBCO.

Experimental band structure and Fermi surface of a two-dimensional Er silicide on Si(111)

1992 ◽  
Vol 82 (4) ◽  
pp. 235-238 ◽  
Author(s):  
P. Wetzel ◽  
C. Pirri ◽  
P. Paki ◽  
J.C. Peruchetti ◽  
D. Bolmont ◽  
...  
Keyword(s):  
Band Structure ◽  
Fermi Surface ◽  
Two Dimensional
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