A continuum model for dephasing in mesoscopic systems

Şenozan, Selma; TURGUT, SADİ; Tomak, MEHMET

doi:10.1016/j.physe.2011.06.025

A continuum model for dephasing in mesoscopic systems

Atıf İçin Kopyala

Şenozan S., TURGUT S., Tomak M.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.43, sa.10, ss.1845-1852, 2011 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 43 Sayı: 10
Basım Tarihi: 2011
Doi Numarası: 10.1016/j.physe.2011.06.025
Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1845-1852
Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A model of continuous dephasing for one-dimensional mesoscopic conductors is proposed. The model is based on Buttiker's fictitious-probe model which is extended by attaching an infinite number of probes uniformly to various points on the conductor. The associated scattering problem is then solved. When the continuum limit is taken, it becomes possible to describe the dephasing as taking place everywhere. The dephasing rate enters into the model as an adjustable parameter. The effect of dephasing on the conductance for a double-barrier system is also studied numerically. (C) 2011 Elsevier B.V. All rights reserved.