Nonlocal potential measurements of quantum conductors

W. J. Skocpol, P. M. Mankiewich, R. E. Howard, L. D. Jackel, D. M. Tennant, A. Douglas Stone

Research output: Contribution to journalArticlepeer-review

106 Scopus citations


Multiterminal measurements of magnetoresistance fluctuations in silicon inversion-layer nanostructures are extended to probe spacings LL, the phase-preserving diffusion length. Unlike for L>L, the sizes of the voltage fluctuations are independent of L, and have novel correlations consistent with independent potential fluctuations of each probe. The corresponding "conductance" fluctuations G(L) are e2h; however, this can be understood if each pair of probes effectively measures voltage fluctuations at scale L, determined by the condition G(L)=e2h.

Original languageEnglish (US)
Pages (from-to)2347-2350
Number of pages4
JournalPhysical review letters
Issue number22
StatePublished - 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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