Pseudospin Soliton in the $\nu =1$ Bilayer Quantum Hall State

Abstract

We investigate a domain structure of pseudospins, a soliton lattice in the bilayer quantum Hall state at total Landau level filling factor $\nu =1$, in a tilted magnetic field, where the pseudospin represents the layer degree of freedom. An anomalous peak in the magnetoresistance $R_{xx}$ appears at the transition point between the commensurate and incommensurate phases. The $R_{xx}$ at the peak is highly anisotropic for the angle between the in-plain magnetic field $B_{\parallel }$ and the current, and indicates a formation of the soliton lattice aligned parallel to $B_{\parallel }$. Temperature dependence of the $R_{xx}$ peak reveals that the dissipation is caused by thermal fluctuations of pseudospin solitons. We construct a phase diagram of the bilayer $\nu =1$ system as a function of $B_{\parallel }$ and the total electron density. We also study effects of density imbalance between the two layers.

4pages, 5figures, PRL to be published

References in corpus (10)

• Bose-Einstein Condensation of Excitons in Bilayer Electron Systems
• Evidence for a Goldstone Mode in a Double Layer Quantum Hall System
• Counterflow measurements in strongly correlated GaAs hole bilayers: evidence for electron-hole pairing
• Vanishing Hall Resistance at High Magnetic Field in a Double Layer Two-Dimensional Electron System
• Quantum Ferromagnetism and Phase Transitions in Double-Layer Quantum Hall Systems
• Spontaneous Interlayer Coherence in Double-Layer Quantum Hall Systems: Symmetry Breaking Interactions, In-Plane Fields and Phase Solitons
• Incommensurate ground state of double-layer quantum Hall systems
• Behaviour of the energy gap near a commensurate-incommensurate transition in double layer quantum Hall systems at nu=1
• Collective Modes of Soliton-Lattice States in Double-Quantum-Well Systems
• Reentrant Melting of Soliton Lattice Phase in Bilayer Quantum Hall System

Cited by in corpus (3)

• Pokrovsky-Talapov Model at finite temperature: a renormalization-group analysis
• Bilayer quantum Hall system at ${\nu }_t=1$: pseudospin models and in-plane magnetic field
• Large Zeeman Splitting in Out-of-Plane Magnetic Field in a Double-Layer Quantum Point Contact