[1] Paul Drude Inst Solid State Elect, Hausvogteipl 5-7, D-10117 Berlin, Germany
[2] Russian Acad Sci, Inst Semicond Phys, Novosibirsk 630090, Russia
来源:
CONTROLLABLE QUANTUM STATES: MESOSCOPIC SUPERCONDUCTIVITY AND SPRINTRONICS
|
2008年
关键词:
QUANTUM-WELLS;
HETEROSTRUCTURES;
TRANSPORT;
D O I:
10.1142/9789812814623_0046
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
We have fabricated high-mobility, two-dimensional electron gases in a GaAs quantum well on cylindrical surfaces, which allows to investigate the magnetotransport behavior under varying magnetic fields along the current path. A strong asymmetry in the quantum Hall effect appears for measurements on both sides of the conductive path. We determined the strain at the position of the quantum well. We observe ballistic transport in 8 mu m wide collimating structures.