Hew, WK;
Thomas, KJ;
Pepper, M;
Farrer, I;
Anderson, D;
Jones, GAC;
Ritchie, DA;
(2009)
Incipient Formation of an Electron Lattice in a Weakly Confined Quantum Wire.
PHYS REV LETT
, 102
(5)
, Article 056804. 10.1103/PhysRevLett.102.056804.
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Abstract
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.
| Type: | Article |
|---|---|
| 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 |
| DOI: | 10.1103/PhysRevLett.102.056804 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.102.056804 |
| Language: | English |
| Additional information: | © 2009 The American Physical Society |
| Keywords: | WIGNER CRYSTAL, GAS, HETEROJUNCTION, QUANTIZATION, CONDUCTANCE, TRANSITION, LIQUID |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1314517 |
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