Doppler-scanning tunneling microscopy current imaging in superconductor-ferromagnet hybrids

Moore, S. A.; Plummer, G.; Fedor, J.; Pearson, J. E.; Novosad, V.; Karapetrov, G.; Iavarone, M.

doi:10.1063/1.4940190

Title: Doppler-scanning tunneling microscopy current imaging in superconductor-ferromagnet hybrids

Journal Article · Mon Jan 25 00:00:00 EST 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4940190· OSTI ID:1235972

Moore, S. A.; Plummer, G.; Fedor, J.; Pearson, J. E.; Novosad, V.; Karapetrov, G.; Iavarone, M.

Mapping the distribution of currents inside a superconductor is usually performed indirectly through imaging of the stray magnetic fields above the surface. Here, we show that by direct imaging of the Doppler shift contribution to the quasiparticle excitation spectrum in the superconductor using low temperature scanning tunneling microscopy, we obtain directly the distribution of supercurrents inside the superconductor. We demonstrate the technique at the example of superconductor/ferromagnet hybrid structure that produces intricate current pattern consisting of combination Meissner shielding currents and Abrikosov vortex currents.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Temple Univ., Philadelphia, PA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-06CH11357; SC0004556

OSTI ID:: 1235972

Alternate ID(s):: OSTI ID: 1235801; OSTI ID: 1356816; OSTI ID: 1734989

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Vol. 108 Journal Issue: 4; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
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Title: Doppler-scanning tunneling microscopy current imaging in superconductor-ferromagnet hybrids

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