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Title: Anomalous periodicity of magnetic interference patterns in encapsulated graphene Josephson junctions

Abstract

We investigate supercurrent interference patterns measured as a function of magnetic field in ballistic graphene Josephson junctions. At high doping, the expected Φ 0 -periodic “Fraunhofer” pattern is observed, indicating a uniform current distribution. Close to the Dirac point, we find anomalous interferences that are close to a 2 Φ 0 periodicity, similar to that predicted for topological Andreev bound states carrying a charge of e instead of 2e . This feature persists with increasing temperature, ruling out a nonsinusoidal current-phase relationship. It also persists in junctions in which sharp vacuum edges are eliminated. Our results indicate that the observed behavior may originate from an intrinsic property of ballistic graphene Josephson junctions, though the exact mechanism remains unclear.

Authors:
; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ;
Publication Date:
Research Org.:
Duke Univ., Durham, NC (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); US Army Research Office (ARO); KAKENHI; Hong Kong Research Grants Council (ECS)
OSTI Identifier:
1573431
Alternate Identifier(s):
OSTI ID: 1737511
Grant/Contract Number:  
SC0002765; ECCS-1542015; 38000131; 17H01138
Resource Type:
Published Article
Journal Name:
Physical Review Research
Additional Journal Information:
Journal Name: Physical Review Research Journal Volume: 1 Journal Issue: 3; Journal ID: ISSN 2643-1564
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Graphene; Josephson junctions

Citation Formats

Ke, C. T., Draelos, A. W., Seredinski, A., Wei, M. T., Li, H., Hernandez-Rivera, M., Watanabe, K., Taniguchi, T., Yamamoto, M., Tarucha, S., Bomze, Y., Borzenets, I. V., Amet, F., and Finkelstein, G. Anomalous periodicity of magnetic interference patterns in encapsulated graphene Josephson junctions. United States: N. p., 2019. Web. doi:10.1103/PhysRevResearch.1.033084.
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Ke, C. T., Draelos, A. W., Seredinski, A., Wei, M. T., Li, H., Hernandez-Rivera, M., Watanabe, K., Taniguchi, T., Yamamoto, M., Tarucha, S., Bomze, Y., Borzenets, I. V., Amet, F., & Finkelstein, G. Anomalous periodicity of magnetic interference patterns in encapsulated graphene Josephson junctions. United States. doi:10.1103/PhysRevResearch.1.033084.
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Ke, C. T., Draelos, A. W., Seredinski, A., Wei, M. T., Li, H., Hernandez-Rivera, M., Watanabe, K., Taniguchi, T., Yamamoto, M., Tarucha, S., Bomze, Y., Borzenets, I. V., Amet, F., and Finkelstein, G. Thu . "Anomalous periodicity of magnetic interference patterns in encapsulated graphene Josephson junctions". United States. doi:10.1103/PhysRevResearch.1.033084.
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@article{osti_1573431,
title = {Anomalous periodicity of magnetic interference patterns in encapsulated graphene Josephson junctions},
author = {Ke, C. T. and Draelos, A. W. and Seredinski, A. and Wei, M. T. and Li, H. and Hernandez-Rivera, M. and Watanabe, K. and Taniguchi, T. and Yamamoto, M. and Tarucha, S. and Bomze, Y. and Borzenets, I. V. and Amet, F. and Finkelstein, G.},
abstractNote = {We investigate supercurrent interference patterns measured as a function of magnetic field in ballistic graphene Josephson junctions. At high doping, the expected Φ0 -periodic “Fraunhofer” pattern is observed, indicating a uniform current distribution. Close to the Dirac point, we find anomalous interferences that are close to a 2Φ0 periodicity, similar to that predicted for topological Andreev bound states carrying a charge of e instead of 2e . This feature persists with increasing temperature, ruling out a nonsinusoidal current-phase relationship. It also persists in junctions in which sharp vacuum edges are eliminated. Our results indicate that the observed behavior may originate from an intrinsic property of ballistic graphene Josephson junctions, though the exact mechanism remains unclear.},
doi = {10.1103/PhysRevResearch.1.033084},
journal = {Physical Review Research},
number = 3,
volume = 1,
place = {United States},
year = {2019},
month = {11}
}
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DOI: 10.1103/PhysRevResearch.1.033084
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Works referenced in this record:

h / e Superconducting Quantum Interference through Trivial Edge States in InAs
journal, January 2018

Nonsinusoidal Current-Phase Relationship in Josephson Junctions from the 3D Topological Insulator HgTe
journal, February 2015

Pb–Graphene–Pb Josephson Junctions: Characterization in Magnetic Field
journal, October 2012

  • Borzenets, I. V.; Coskun, U. C.; Mebrahtu, H.
  • IEEE Transactions on Applied Superconductivity, Vol. 22, Issue 5
  • DOI: 10.1109/TASC.2012.2198472

Observation of Electron Coherence and Fabry–Perot Standing Waves at a Graphene Edge
journal, November 2017

Charge accumulation at the boundaries of a graphene strip induced by a gate voltage: Electrostatic approach
journal, April 2008

Edge currents shunt the insulating bulk in gapped graphene
journal, February 2017

  • Zhu, M. J.; Kretinin, A. V.; Thompson, M. D.
  • Nature Communications, Vol. 8, Issue 1
  • DOI: 10.1038/ncomms14552

Tuning Locality of Pair Coherence in Graphene-based Andreev Interferometers
journal, March 2015

  • Kim, Minsoo; Jeong, Dongchan; Lee, Gil-Ho
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep08715

Specular Andreev Reflection in Graphene
journal, August 2006

Anomalous Fraunhofer interference in epitaxial superconductor-semiconductor Josephson junctions
journal, January 2017

Phase-Coherent Transport in Graphene Quantum Billiards
journal, September 2007

Ballistic Josephson junctions in edge-contacted graphene
journal, July 2015

Supercurrent Density Distribution in Josephson Junctions
journal, May 1971

Nonlocality in mesoscopic Josephson junctions with strip geometry
journal, April 1999

Supercurrent in the quantum Hall regime
journal, May 2016

Coherent transport and nonlocality in mesoscopic SNS junctions: anomalous magnetic interference patterns
journal, May 1999

  • Barzykin, Victor; Zagoskin, Alexandre M.
  • Superlattices and Microstructures, Vol. 25, Issue 5-6
  • DOI: 10.1006/spmi.1999.0731

Spatially resolved edge currents and guided-wave electronic states in graphene
journal, November 2015

  • Allen, M. T.; Shtanko, O.; Fulga, I. C.
  • Nature Physics, Vol. 12, Issue 2
  • DOI: 10.1038/nphys3534

Gapless Andreev bound states in the quantum spin Hall insulator HgTe
journal, August 2016

  • Bocquillon, Erwann; Deacon, Russell S.; Wiedenmann, Jonas
  • Nature Nanotechnology, Vol. 12, Issue 2
  • DOI: 10.1038/nnano.2016.159

Induced superconductivity in the quantum spin Hall edge
journal, August 2014

  • Hart, Sean; Ren, Hechen; Wagner, Timo
  • Nature Physics, Vol. 10, Issue 9
  • DOI: 10.1038/nphys3036

Unconventional Correlation between Quantum Hall Transport Quantization and Bulk State Filling in Gated Graphene Devices
journal, October 2016

Magnetic field oscillations of the critical current in long ballistic graphene Josephson junctions
journal, June 2016

Observation of nonsinusoidal current-phase relation in graphene Josephson junctions
journal, September 2016

New directions in the pursuit of Majorana fermions in solid state systems
journal, June 2012

Anomalous topological pumps and fractional Josephson effects
journal, July 2014

Quantum oscillations of the critical current and high-field superconducting proximity in ballistic graphene
journal, December 2015

  • Ben Shalom, M.; Zhu, M. J.; Fal’ko, V. I.
  • Nature Physics, Vol. 12, Issue 4
  • DOI: 10.1038/nphys3592

Josephson Current Flow in Pure Superconducting-Normal-Superconducting Junctions
journal, January 1972

Bipolar supercurrent in graphene
journal, March 2007

  • Heersche, Hubert B.; Jarillo-Herrero, Pablo; Oostinga, Jeroen B.
  • Nature, Vol. 446, Issue 7131
  • DOI: 10.1038/nature05555

Dynamics of Majorana States in a Topological Josephson Junction
journal, July 2013

Revealing Topological Superconductivity in Extended Quantum Spin Hall Josephson Junctions
journal, November 2014

Effects of spin-orbit coupling and spatial symmetries on the Josephson current in SNS junctions
journal, April 2016

Premature switching in graphene Josephson transistors
journal, July 2009

Quantum Hall–based superconducting interference device
journal, September 2019

  • Seredinski, Andrew; Draelos, Anne W.; Arnault, Ethan G.
  • Science Advances, Vol. 5, Issue 9
  • DOI: 10.1126/sciadv.aaw8693

Current-Phase Relation of Ballistic Graphene Josephson Junctions
journal, May 2017

Josephson current and multiple Andreev reflections in graphene SNS junctions
journal, May 2008

Superconducting Proximity Effect and Majorana Fermions at the Surface of a Topological Insulator
journal, March 2008

Edge effects in the magnetic interference pattern of a ballistic SNS junction
journal, May 2016

Josephson current and noise at a superconductor/quantum-spin-Hall-insulator/superconductor junction
journal, April 2009

Observation of electron–hole puddles in graphene using a scanning single-electron transistor
journal, November 2007

  • Martin, J.; Akerman, N.; Ulbricht, G.
  • Nature Physics, Vol. 4, Issue 2
  • DOI: 10.1038/nphys781

Nonlocal supercurrent in mesoscopic Josephson junctions
journal, March 1998

Quantum Hall transport as a probe of capacitance profile at graphene edges
journal, January 2013

  • Vera-Marun, I. J.; Zomer, P. J.; Veligura, A.
  • Applied Physics Letters, Vol. 102, Issue 1
  • DOI: 10.1063/1.4773589

Magnetic field-induced helical mode and topological transitions in a topological insulator nanoribbon
journal, January 2016

  • Jauregui, Luis A.; Pettes, Michael T.; Rokhinson, Leonid P.
  • Nature Nanotechnology, Vol. 11, Issue 4
  • DOI: 10.1038/nnano.2015.293

Supercurrent Interference in Few-Mode Nanowire Josephson Junctions
journal, November 2017

Edge-mode superconductivity in a two-dimensional topological insulator
journal, May 2015

  • Pribiag, Vlad S.; Beukman, Arjan J. A.; Qu, Fanming
  • Nature Nanotechnology, Vol. 10, Issue 7
  • DOI: 10.1038/nnano.2015.86

Evidence for an anomalous current–phase relation in topological insulator Josephson junctions
journal, June 2015

  • Kurter, C.; Finck, A. D. K.; Hor, Y. S.
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8130

Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes
journal, December 2016

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