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

doi:10.1103/PhysRevB.92.195303

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 journal › Article › peer-review

14 Scopus citations

Abstract

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 language	English (US)
Article number	195303
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.92.195303
State	Published - Nov 3 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.92.195303

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title = "Nanoscale Mach-Zehnder interferometer with spin-resolved quantum Hall edge states",

abstract = "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.",

author = "Biswajit Karmakar and Davide Venturelli and Luca Chirolli and Vittorio Giovannetti and Rosario Fazio and Stefano Roddaro and Pfeiffer, {Loren N.} and West, {Ken W.} and Fabio Taddei and Vittorio Pellegrini",

note = "Publisher Copyright: {\textcopyright}2015 American Physical Society.",

year = "2015",

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doi = "10.1103/PhysRevB.92.195303",

language = "English (US)",

volume = "92",

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T1 - Nanoscale Mach-Zehnder interferometer with spin-resolved quantum Hall edge states

AU - Karmakar, Biswajit

AU - Venturelli, Davide

AU - Chirolli, Luca

AU - Giovannetti, Vittorio

AU - Fazio, Rosario

AU - Roddaro, Stefano

AU - Pfeiffer, Loren N.

AU - West, Ken W.

AU - Taddei, Fabio

AU - Pellegrini, Vittorio

PY - 2015/11/3

Y1 - 2015/11/3

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevB.92.195303

M3 - Article

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

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M1 - 195303

ER -

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

Abstract

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