Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2002-08-31
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
11 pages revtex + 3 jpeg figures, to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.66.155334
The integer quantum Hall effect (QHE) and one-dimensional Anderson localization (AL) are limiting special cases of a more general phenomenon, directed localization (DL), predicted to occur in disordered one-dimensional wave guides called "quantum railroads" (QRR). Here we explain the surprising results of recent measurements by Kang et al. [Nature 403, 59 (2000)] of electron transfer between edges of two-dimensional electron systems and identify experimental evidence of QRR's in the general, but until now entirely theoretical, DL regime that unifies the QHE and AL. We propose direct experimental tests of our theory.
Kirczenow} George
Nonoyama Shinji
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