scholarly journals Thermodynamics of double-layer quantum Hall systems

2002 ◽  
Vol 66 (15) ◽  
Author(s):  
Emiliano Papa ◽  
Alexei M. Tsvelik
Keyword(s):  
Double Layer ◽  
Quantum Hall ◽  
Quantum Hall Systems

Optical Fermi edge singularity of double-layer quantum Hall systems

1993 ◽  
Vol 71 (5) ◽  
pp. 773-776 ◽  
Author(s):  
Jun Zang ◽  
David Schmeltzer ◽  
Joseph L. Birman
Keyword(s):  
Double Layer ◽  
Quantum Hall ◽  
Edge Singularity ◽  
Quantum Hall Systems ◽  
Fermi Edge ◽  
Fermi Edge Singularity

Phase diagram of vortices in double-layer quantum Hall systems

1996 ◽  
Vol 53 (12) ◽  
pp. R7614-R7617 ◽  
Author(s):  
Igor Tupitsyn ◽  
Mats Wallin ◽  
Anders Rosengren
Keyword(s):  
Phase Diagram ◽  
Double Layer ◽  
Quantum Hall ◽  
Quantum Hall Systems

scholarly journals JOSEPHSON EFFECT AND ASSOCIATED PHENOMENA IN DOUBLE-LAYER QUANTUM HALL SYSTEMS

1994 ◽  
Vol 08 (16) ◽  
pp. 2111-2155 ◽  
Author(s):  
Z.F. EZAWA ◽  
A. IWAZAKI
Keyword(s):  
Double Layer ◽  
Josephson Effect ◽  
Cooper Pair ◽  
Quantum Hall ◽  
Meissner Effect ◽  
Plasmon Excitation ◽  
Josephson Tunneling ◽  
Quantum Hall Systems ◽  
System A ◽  
Chern Simons

In certain double-layer quantum Hall systems we show the existence of Josephson phenomena such as the Josephson effect, the Meissner effect and the Anderson plasmon excitation. The distinctive feature is that the unit of the charge associated with the Josephson tunneling is e of the single electron and not 2e of the Cooper pair. We develop a theory of these Josephson phenomena by using the Chern-Simons formulation of the planar electrons. We explain our results by using the pseudospin language. Furthermore, we point out that Anderson plasmon excitations may already have been observed by a recent experiment on a double-layer quantum Hall system. A microwave experiment without attaching external leads is proposed for a direct observation of plasmon excitations.

scholarly journals Spontaneous interlayer coherence in double-layer quantum Hall systems: Charged vortices and Kosterlitz-Thouless phase transitions

1995 ◽  
Vol 51 (8) ◽  
pp. 5138-5170 ◽  
Author(s):  
K. Moon ◽  
H. Mori ◽  
Kun Yang ◽  
S. M. Girvin ◽  
A. H. MacDonald ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Double Layer ◽  
Quantum Hall ◽  
Quantum Hall Systems

Charged pseudospin textures in double-layer quantum Hall systems: Bimerons and meron crystals

1996 ◽  
Vol 54 (23) ◽  
pp. 16888-16902 ◽  
Author(s):  
L. Brey ◽  
H. A. Fertig ◽  
R. Côté ◽  
A. H. MacDonald
Keyword(s):  
Double Layer ◽  
Quantum Hall ◽  
Quantum Hall Systems

scholarly journals Bimerons in Double Layer Quantum Hall Systems

1998 ◽  
Vol 12 (24) ◽  
pp. 2495-2511 ◽  
Author(s):  
Sankalpa Ghosh ◽  
R. Rajaraman
Keyword(s):  
Partial Differential Equations ◽  
Differential Equations ◽  
Double Layer ◽  
Nonlinear Partial Differential Equations ◽  
Technical Problem ◽  
Quantum Hall ◽  
Great Length ◽  
Coulomb Interactions ◽  
Partial Differential ◽  
Quantum Hall Systems

In this paper we discuss bimeron pseudospin textures for double layer quantum Hall systems with filling factor ν = 1. Bimerons are excitations corresponding to bound pairs of merons and anti-merons. Bimeron solutions have already been studied at great length by other groups by minimising the microsopic Hamiltonian between microscopic trial wavefunctions. Here we calculate them by numerically solving coupled nonlinear partial differential equations arising from extremisation of the effective action for pseudospin textures. We also calculate the different contributions to the energy of our bimerons, coming from pseudospin stiffness, capacitance and coulomb interactions between the merons. Apart from augmenting earlier results, this allows us to check how good an approximation it is to think of the bimeron as a pair of rigid objects (merons) with logarithmically growing energy and with electric charge 1/2. Our differential equation approach also allows us to study the dependence of the spin texture as a function of the distance between merons and the inter layer distance. Lastly, the technical problem of solving coupled nonlinear partial differential equations, subject to the special boundary conditions of bimerons is interesting in its own right.

scholarly journals Edge-state transport in separately contacted double-layer quantum Hall systems

1996 ◽  
Vol 53 (24) ◽  
pp. R16168-R16171 ◽  
Author(s):  
D. Yoshioka ◽  
A. H. MacDonald
Keyword(s):  
Double Layer ◽  
Quantum Hall ◽  
Edge State ◽  
Quantum Hall Systems
Sign in / Sign up

Export Citation Format

Share Document