Incipient Formation of an Electron Lattice in a Weakly Confined Quantum Wire.
PHYS REV LETT
, Article 056804. 10.1103/PhysRevLett.102.056804.
We study the low-temperature transport properties of 1D quantum wires as the confinement strength V-conf and the carrier density n(1D) are varied using a combination of split gates and a top gate in GaAs/AlGaAs heterostructures. At intermediate V-conf and n(1D), we observe a jump in conductance to 4e(2)/h, suggesting a double wire. On further reducing n(1D), plateau at 2e(2)/h returns. Our results show beginnings of the formation of an electron lattice in an interacting quasi-1D quantum wire. In the presence of an in-plane magnetic field, mixing of spin-aligned levels of the two wires gives rise to more complex states.
|Title:||Incipient Formation of an Electron Lattice in a Weakly Confined Quantum Wire|
|Open access status:||An open access version is available from UCL Discovery|
|Additional information:||© 2009 The American Physical Society|
|Keywords:||WIGNER CRYSTAL, GAS, HETEROJUNCTION, QUANTIZATION, CONDUCTANCE, TRANSITION, LIQUID|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
Archive Staff Only