Low-temperature fate of the 0.7 structure in a point contact: A Kondo-like correlated state in an open system

S. M. Cronenwett, S. M. Cronenwett, H. J. Lynch, D. Goldhaber-Gordon, D. Goldhaber-Gordon, L. P. Kouwenhoven, C. M. Marcus, K. Hirose, N. S. Wingreen, V. Umansky

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Abstract

An overview is given on the experimental evidence that at low temperature the unpaired spin associated with the 0.7 structure forms a Kondo-like many-body state. The evidence presented includes: 1) a narrow conductance peak at zero source-drain bias that forms at low temperature, 2) collapse of conductance data onto a single function, 3) correspondence between the Kondo scaling factor and the width of the zero-bias peak, and 4) splitting of the zero-bias peak in a magnetic field.

Original languageEnglish (US)
Article number226805
Pages (from-to)226805/1-226805/4
JournalPhysical review letters
Volume88
Issue number22
DOIs
StatePublished - Jun 3 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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