Phase-breaking time variations with temperature and current in an open quantum dot array

✍ Scribed by C Prasad; A Andresen; F Ge; J.P Bird; D.K Ferry; L.H Lin; N Aoki; K Nakao; Y Ochiai; K Ishibashi; Y Aoyagi; T Sugano

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 205 KB
• Volume: 27
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.2000.0833

✦ Synopsis

Magnetic characterization of a quantum dot array was carried out to extract the phasebreaking time as a function of temperature and current. These measurements indicate a saturation of the phase-breaking time at low temperature and low current. The phase-breaking time varies as 1/T for temperatures above 1 K, which can be attributed to carrier-carrier scattering processes. Variation of the phase-breaking time with current yields an estimate for the electron temperature.