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Title: Quantum Criticality in Resonant Andreev Conduction

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Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 11; Related Information: CHORUS Timestamp: 2017-09-12 14:34:32; Journal ID: ISSN 0031-9007
American Physical Society
Country of Publication:
United States

Citation Formats

Pustilnik, M., van Heck, B., Lutchyn, R. M., and Glazman, L. I.. Quantum Criticality in Resonant Andreev Conduction. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.119.116802.
Pustilnik, M., van Heck, B., Lutchyn, R. M., & Glazman, L. I.. Quantum Criticality in Resonant Andreev Conduction. United States. doi:10.1103/PhysRevLett.119.116802.
Pustilnik, M., van Heck, B., Lutchyn, R. M., and Glazman, L. I.. 2017. "Quantum Criticality in Resonant Andreev Conduction". United States. doi:10.1103/PhysRevLett.119.116802.
title = {Quantum Criticality in Resonant Andreev Conduction},
author = {Pustilnik, M. and van Heck, B. and Lutchyn, R. M. and Glazman, L. I.},
abstractNote = {},
doi = {10.1103/PhysRevLett.119.116802},
journal = {Physical Review Letters},
number = 11,
volume = 119,
place = {United States},
year = 2017,
month = 9

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on September 12, 2018
Publisher's Accepted Manuscript

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  • We present an experimental study of transport properties of a large two-dimensional array of superconductor-normal-metal-superconductor (SNS) junctions comprised of the nanopatterned superconducting film, ensuring that NS interfaces of our SNS junctions are highly transparent. We find the anomalously high charge transmission at certain applied voltages commensurate with the magnitude of the gap in superconducting islands. This indicates the nonlocal nature of the charge transfer in multiply connected SNS systems. We propose the mechanism of the correlated transmission of Cooper pairs in large arrays of SNS junctions based on the combined action of the proximity effect and the simultaneous Andreev conversionmore » processes at many NS-interfaces.« less
  • A new universality class distinct from the standard Wigner-Dyson class is identified. This class is realized by putting a metallic quantum dot in contact with a superconductor, while applying a magnetic field so as to make the pairing field effectively vanish on average. A random-matrix description of the spectral and transport properties of such a quantum dot is proposed. The weak-localization correction to the tunnel conductance is nonzero and results from the depletion of the density of states due to the coupling with the superconductor. Semiclassically, the depletion is caused by a singular mode of phase-coherent long-range propagation of particlesmore » and holes. {copyright} {ital 1996 The American Physical Society.}« less
  • We have investigated the superconducting-phase-modulated reduction in the resistance of a ballistic quantum point contact (QPC) connected via a disordered two-dimensional electron gas (2DEG) to superconductors. We show that this reduction is caused by coherent Andreev backscattering of holes through the QPC, which increases monotonically by reducing the bias voltage to zero. In contrast, the magnitude of the phase-dependent resistance of the disordered 2DEG displays a nonmonotonic reentrant behavior versus bias voltage. {copyright} {ital 1997} {ital The American Physical Society}
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