Citation
F. Ott et al., QUANTIZED CONDUCTANCE IN A CONTACT BETWEEN METALLIC OXIDE CRYSTALS, Physical review. B, Condensed matter, 58(8), 1998, pp. 4656-4659
Citations number
28
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
01631829
Volume
58
Issue
8
Year of publication
1998
Pages
4656 - 4659
Database
ISI
SICI code
0163-1829(1998)58:8<4656:QCIACB>2.0.ZU;2-Q
Abstract
The conductance of a point contact between two crystals of metallic (L
ao(0.75)Sr(0.25))MnO3 shows steps as the contact is broken. A histogra
m of the conductance values observed in 60 breaks exhibits a series of
sharp peaks at integer multiples of G(0)=2e(2)/h. Quantum conductance
in these ceramics is qualitatively different from that normally seen
in metals and suggests that no neck formation occurs during fracture o
f a contact between these brittle materials.