Coupled quantum wires as a detector of many-body states below the last conductance plateau.

Journal Article · Sun Feb 29 23:00:00 EST 2004 · Proposed for publication in Semiconductor Science and Technology.

OSTI ID:959243

Sasaki, T ^[1]; Lilly, Michael Patrick; Bird, J P ^[2]; Shailos, A ^[2]; Reno, John Louis; Ochiai, Y ^[1]; Aoki, N ^[1]; Iwase, Y ^[1]; Morimoto, T ^[1]; Simmons, Jerry Alvon

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1. Chiba University, Chiba, Japan
2. Arizona State University, Tempe, AZ

We demonstrate the presence of a resonant interaction between a pair of coupled quantum wires, which are realized in the ultra-high mobility two-dimensional electron gas of a GaAs/AlGaAs quantum well. Measuring the conductance of one wire, as the width of the other is varied, we observe a resonant peak in its conductance that is correlated with the point at which the swept wire pinches off. We discuss this behavior in terms of recent theoretical predictions concerning local spin-moment formation in quantum wires.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 959243
• Report Number(s): SAND2004-2947J
• Journal Information: Proposed for publication in Semiconductor Science and Technology., Journal Name: Proposed for publication in Semiconductor Science and Technology.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ALUMINIUM ARSENIDES
ELECTRIC CONDUCTIVITY
ELECTRON GAS
GALLIUM ARSENIDES
QUANTUM WELLS
QUANTUM WIRES