Mobility and quantum mobility of modern GaAs/AlGaAs heterostructures

Mobility asymmetry in InGaAs/InAlAs heterostructures with InAs quantum wires.

Strong asymmetry of electron mobility in InGaAs/InAlAs heterostructures (lattice matched to InP) with the presence of InAs quantum wires was observed. Self-assembled InAs quantum wires, embedded in an InGaAs matrix close to the hetero-interface, has a strong effect in electron conduction in the interface channel. The low temperature mobility for electrons moving parallel to the quantum wires is...

Gate-tunable high mobility remote-doped InSb/In1−xAlxSb quantum well heterostructures

InAlSb/InAs/AlGaSb Quantum Well Heterostructures for High-Electron-Mobility Transistors

Heterostructures for InAs-channel high-electron-mobility transistors (HEMTs) were investigated. Reactive AlSb buffer and barrier layers were replaced by more stable Al0.7Ga0.3Sb and In0.2Al0.8Sb alloys. The distance between the gate and the channel was reduced to 7–13 nm to allow good aspect ratios for very short gate lengths. In addition, n-InAs caps were successfully deposited on the In0.2Al0...

Gate-tunable high mobility remote-doped InSb/In12xAlxSb quantum well heterostructures

heterostructures Wei Yi, Andrey A. Kiselev, Jacob Thorp, Ramsey Noah, Binh-Minh Nguyen, Steven Bui, Rajesh D. Rajavel, Tahir Hussain, Mark F. Gyure, Philip Kratz, Qi Qian, Michael J. Manfra, Vlad S. Pribiag, Leo P. Kouwenhoven, Charles M. Marcus, and Marko Sokolich HRL Laboratories, 3011 Malibu Canyon Rd, Malibu, California 90265, USA Department of Applied Physics, Stanford University, Stanford...

Mobility in the Modern Western World

ion. Th ey aspire toward the universal and have no regard for the particular. In this sense, they are simply yet another form of representation of mobility alongside choreography charts or time-lapse photography. Unlike these other forms of representation, however, rights play a central role in the formation of liberal democracy. Th e right to mobility is central to the list of rights considere...