Phase coherent transport in GaAs/AlGaAs core-shellnanowires
详细信息 查看全文
- 作者：Damien Lucot ; Fauzia Jabeen ; Mohammed R. Ramdani ; Gilles Patriarche ; Giancarlo Faini ; Dominique Mailly ; Jean-Christophe Harm
- 关键词：A1. Magneto-transport measurements ; A3. Molecular beam epitaxy ; B2. Semiconducting III&ndash ; V materials ; B3. Core&ndash ; shell nanowire
- 刊名：Journal of Crystal Growth
- 出版年：2013
- 出版时间：1 September, 2013
- 年：2013
- 卷：378
- 期：Complete
- 页码：546-548
- 全文大小：742 K
文摘
We report on low temperature magneto-conductance measurements of a single modulation-doped GaAs/AlGaAs core-shell nanowire in transverse magnetic field. Information on the phase coherence length l? is obtained from quantum conductivity corrections due to weak localization effects or universal conductance fluctuation. The nanowires are totally coherent at very low temperature and l? could be larger than 250 nm at 4 K. The temperature dependence of l? shows that the main dephasing mechanism is the one-dimensional electron-electron scattering mechanism.