A Novel Meron-induced Pseudospin Wave in Bilayer Quantum Hall Coherent State and the Residual Zero-bias Peak in Tunneling Conductance

Abstract

In the bilayer quantum Hall coherent state for ${\nu }_T$ deviating slightly from one, we show that, instead of the global order parameter, the spontaneous breaking of the pseudospin U(1) rotational symmetry is reflected by the periodic domain structure accompanying with the charged meron pairs. The motion of meron pairs induces a novel pseudospin wave. The long range order of the periodic domains in a low bias voltage range leads to the residual zero-bias peak in the tunneling conductance even when the pseudopsin Goldstone feature in a high bias voltage range can be distinct from it.

arXiv comment4 pages, 1 figure

References in corpus (12)

• Evidence for a Goldstone Mode in a Double Layer Quantum Hall System
• Observation of a Linearly Dispersing Collective Mode in a Quantum Hall Ferromagnet
• Theory of interlayer tunneling in bi-layer quantum Hall ferromagnets
• Josephson Effect Without Superconductivity: Realization in Quantum Hall Bilayers
• Strong Correlation to Weak Correlation Phase Transition in Bilayer Quantum Hall Systems
• Interlayer tunneling in double-layer quantum Hall pseudo-ferromagnets
• Bi-layer Paired Quantum Hall States and Coulomb Drag
• Is there a d.c. Josephson Effect in Bilayer Quantum Hall Systems?
• Bilayer Coherent and Quantum Hall Phases: Duality and Quantum Disorder
• Dissipationless transport in low density bilayer systems
• Phase transition and spin-wave dispersion in quantum Hall bilayers at filling factor nu=1
• Effect of Subband Landau Level Coupling to the Linearly Dispersing Collective Mode in a Quantum Hall Ferromagnet