Nanoscale Mach-Zehnder interferometer with spin-resolved quantum Hall edge states

Biswajit Karmakar, Davide Venturelli, Luca Chirolli, Vittorio Giovannetti, Rosario Fazio, Stefano Roddaro, Loren N. Pfeiffer, Ken W. West, Fabio Taddei, Vittorio Pellegrini

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We realize a nanoscale-area Mach-Zehnder interferometer with co-propagating quantum Hall spin-resolved edge states and demonstrate the persistence of gate-controlled quantum interference oscillations, as a function of an applied magnetic field, at relatively large temperatures. Arrays of top-gate magnetic nanofingers are used to induce a resonant charge transfer between the pair of spin-resolved edge states. To account for the pattern of oscillations measured as a function of magnetic field and gate voltage, we have developed a simple theoretical model which satisfactorily reproduces the data.

Original languageEnglish (US)
Article number195303
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number19
StatePublished - Nov 3 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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