Quantum interference effects in percolated metal networks
Paper i proceeding, 1994

Quantum corrections (QC) to the resistivity due to weak localization (WL) and electron-electron interaction (EEI) have been measured for percolated metal networks with percolation coherence length z comparable to the quantum length scales-the phase-breaking length L and the thermal diffusion length LT. Far from the percolation metal-insulator transition (MIT) the `macroscopic' disorder is averaged over the quantum lengths (L,LTz) and the QC are of the universal two-dimensional (2D) type with R=R(z), where R(z) is the resistance per square at scales larger than z. A crossover 2D1D in the dimensionality of the QC and the Nyquist phase-braking mechanism is observed near the MIT, where zL,LT

localised electron states

metal-insulator transition

interface electron states

quantum interference phenomena

percolation

Författare

M. E. Gershenson

P. M. Echternach

H. M. Bozler

A. L. Bogdanov

Institutionen för fysik

Bengt Nilsson

Institutionen för fysik

Physica B: Condensed Matter

0921-4526 (ISSN)

1109-1110

Styrkeområden

Nanovetenskap och nanoteknik

Materialvetenskap

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1016/0921-4526(94)90884-2