Anisotropic Transport of Quantum Hall Meron-Pair Excitations

Abstract

Double-layer quantum Hall systems at total filling factor ${\nu }_T=1$ can exhibit a commensurate-incommensurate phase transition driven by a magnetic field $B_{\parallel }$ oriented parallel to the layers. Within the commensurate phase, the lowest charge excitations are believed to be linearly-confined Meron pairs, which are energetically favored to align with $B_{\parallel }$. In order to investigate this interesting object, we propose a gated double-layer Hall bar experiment in which $B_{\parallel }$ can be rotated with respect to the direction of a constriction. We demonstrate the strong angle-dependent transport due to the anisotropic nature of linearly-confined Meron pairs and discuss how it would be manifested in experiment.

4 pages, RevTex, 3 postscript figures

References in corpus (10)

• Spontaneous Inter-layer Coherence in Double-Layer Quantum-Hall Systems I: Charged Vortices and Kosterlitz-Thouless Phase Transitions
• Evidence for Skyrmions and Single Spin Flips in the Integer Quantized Hall Effect
• Quantum Ferromagnetism and Phase Transitions in Double-Layer Quantum Hall Systems
• Evidence of Skyrmion excitations about $\nu =1$ in n-Modulation Doped Single Quantum Wells by Inter-band Optical Transmission
• Resonant Tunneling Between Quantum Hall Edge States
• Hund's Rule for Composite Fermions
• Behaviour of the energy gap near a commensurate-incommensurate transition in double layer quantum Hall systems at nu=1
• The effect of inter-edge Coulomb interactions on the transport between quantum Hall edge states
• Quantum Hall Ferromagnets
• Topological Excitations in Double-Layer Quantum Hall systems

Cited by in corpus (3)

• Wave Function and Emergent SU(2) Symmetry in ${\nu }_T=1$ Quantum Hall Bilayer
• Rippled state of double-layer quantum Hall systems
• PseudoSkyrmion Effects on Tunneling Conductivity in Coherent Bilayer Quantum Hall States at $\nu =1$