论文信息 - LETTER TO THE EDITOR: Magnetic quenching of back scattering in coupled double quantum wires: giant mobility enhancement

LETTER TO THE EDITOR: Magnetic quenching of back scattering in coupled double quantum wires: giant mobility enhancement

We show theoretically that the low-temperature mobility and conductance of thin double quantum wires formed from coupled double quantum wells can be enhanced by orders of magnitude by an applied magnetic field of a few tesla. This enhancement is caused by quenching of the intrawire back scattering which occurs when the Fermi level falls within the partial energy gap. The gap is created by the anticrossing of the energy dispersion curves of two quantum wires which are displaced relative to each other by the field.

S. K. Lyo

[1] Gold,et al. Correlation effects in the impurity-limited mobility of quantum wires. , 1995, Physical review. B, Condensed matter.

[2] B. Nag,et al. Electron mobility limited by deformation potential acoustic phonon scattering in quantum wires , 1995 .

[3] Simmons,et al. Conductance modulation in double quantum wells due to magnetic field-induced anticrossing. , 1994, Physical review letters.

[4] Lyo,et al. Transport and level anticrossing in strongly coupled double quantum wells with in-plane magnetic fields. , 1994, Physical review. B, Condensed matter.

[5] Brown,et al. Wave functions and Fermi surfaces of strongly coupled two-dimensional electron gases investigated by in-plane magnetoresistance. , 1994, Physical review. B, Condensed matter.

[6] Mitin,et al. Acoustic-phonon scattering in a rectangular quantum wire. , 1993, Physical review. B, Condensed matter.

[7] H. Sakaki,et al. Interface roughness scattering and electron mobility in quantum wires , 1992 .

[8] West,et al. Resistance resonance in coupled potential wells. , 1990, Physical review letters.

[9] Hiroyuki Sakaki,et al. Scattering Suppression and High-Mobility Effect of Size-Quantized Electrons in Ultrafine Semiconductor Wire Structures , 1980 .