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Anticrossing of spin-split subbands in quasi-one-dimensional wires

Graham, AC; Simmons, MY; Ritchie, DA; Pepper, M; (2008) Anticrossing of spin-split subbands in quasi-one-dimensional wires. PHYS REV LETT , 100 (22) , Article 226804. 10.1103/PhysRevLett.100.226804. Green open access

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Abstract

In quantum Hall systems, both anticrossings and magnetic phase transitions can occur when opposite-spin Landau levels coincide. Our results indicate that both processes are also possible in quasi-1D quantum wires in an in-plane B field, B-parallel to. Crossings of opposite-spin 1D subbands resemble magnetic phase transitions at zero dc source-drain bias, but display anticrossings at high dc bias. Our data also imply that the well-known 0.7 structure may evolve into a spin-hybridized state in finite dc bias.

Type: Article
Title: Anticrossing of spin-split subbands in quasi-one-dimensional wires
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.100.226804
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.100.226804
Language: English
Additional information: © 2008 The American Physical Society
Keywords: QUANTUM WIRES, ELECTRON-GAS, POLARIZATION, INSTABILITY
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.ucl.ac.uk/id/eprint/1314489
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