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American Physical Society, Physical Review B (Condensed Matter), 8(58), p. 4656-4659, 1998

DOI: 10.1103/physrevb.58.4656

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Quantized conductance in a contact between metallic oxide crystals

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Data provided by SHERPA/RoMEO

Abstract

The conductance of a point contact between two crystals of metallic (La0.75Sr0.25)MnO3 shows steps as the contact is broken. A histogram of the conductance values observed in 60 breaks exhibits a series of sharp peaks at integer multiples of G0 = 2e2/h. Quantum conductance in these ceramics is qualitatively different from that normally seen in metals and suggests that no neck formation occurs during fracture of a contact between these brittle materials. ; PUBLISHED ; This work was supported by the European Commission as part of the Oxide Spin Electronics Network ~OXSEN!.