Saturation of phase coherence length in GaAs/AlGaAs on-facet quantum wires

Journal Article · Mon May 21 00:00:00 EDT 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.102990· OSTI ID:6861516

Fukai, Y K; Yamada, S; Nakano, H ^[1]

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1. NTT Basic Research Laboratories, 3-9-11 Midoricho, Musashinoshi, Tokyo 180, (Japan)

Phase coherence length {ital L}{sub {phi}} of on-facet quantum wires is determined at temperatures down to 50 mK by three methods: magnetoresistance, conductance fluctuation amplitude, and the conductance fluctuation correlation field. It is found that {ital L}{sub {phi}} saturates below about 0.4 K. This saturation is identified as due to spin-orbit interaction, which has no temperature dependence. This result is supported by positive magnetoresistance under a weak magnetic field.

• OSTI ID: 6861516
• Journal Information: Applied Physics Letters; (USA), Vol. 56:21; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM ARSENIDES
ELECTRIC CONDUCTIVITY
GALLIUM ARSENIDES
SQUID DEVICES
COHERENCE LENGTH
MAGNETORESISTANCE
FLUCTUATIONS
SUPERCONDUCTIVITY
WIRES
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
DIMENSIONS
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
GALLIUM COMPOUNDS
LENGTH
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
PHYSICAL PROPERTIES
PNICTIDES
SUPERCONDUCTING DEVICES
VARIATIONS
656100* - Condensed Matter Physics- Superconductivity
426001 - Engineering- Superconducting Devices & Circuits- (1990-)