Crossover from weak localization to weak antilocalization in a disordered microbridge
Abstract
We calculate the weak localization correction in the double crossover to broken time-reversal and spin-rotational symmetry for a disordered microbridge or a short disordered wire using a scattering-matrix approach. Whereas the correction has universal limiting values in the three basic symmetry classes, the functional form of the magnetoconductance is affected by eventual nonhomogeneities in the microbridge.
- Publication:
-
Physical Review B
- Pub Date:
- March 2003
- DOI:
- 10.1103/PhysRevB.67.115313
- arXiv:
- arXiv:cond-mat/0301449
- Bibcode:
- 2003PhRvB..67k5313C
- Keywords:
-
- 73.20.Fz;
- 73.21.Hb;
- 73.23.-b;
- 73.43.Qt;
- Weak or Anderson localization;
- Quantum wires;
- Electronic transport in mesoscopic systems;
- Magnetoresistance;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
- E-Print:
- 5 pages, RevTeX