Observation of Andreev-Saint-James reflections in nano-scale planar superconductor to ferromagnet contacts

S. Hacohen-Gourgy; B. Almog; G. Deutscher

doi:10.1063/1.2909565

Observation of Andreev-Saint-James reflections in nano-scale planar superconductor to ferromagnet contacts

S. Hacohen-Gourgy^*, B. Almog, G. Deutscher

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We fabricated nanoscale ferromagnetic (F) Nickel/superconducting (S) indium junctions which show that spin polarization effects on the contact conductance can be observed in a planar geometry. The data demonstrate that the Andreev-Saint-James [Sov. Phys. JETP 19, 1228 (1964) and J. Phys. (Paris) 25, 899 (1964)] electron-hole reflections at the FS interface, which are sensitive to the polarization of the F side, dominate the conductance of the contact at low bias. The simplicity of fabrication makes these junctions appealing for use in multiterminal SF structures.

Original language	English
Article number	152502
Journal	Applied Physics Letters
Volume	92
Issue number	15
DOIs	https://doi.org/10.1063/1.2909565
State	Published - 2008

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10.1063/1.2909565

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title = "Observation of Andreev-Saint-James reflections in nano-scale planar superconductor to ferromagnet contacts",

abstract = "We fabricated nanoscale ferromagnetic (F) Nickel/superconducting (S) indium junctions which show that spin polarization effects on the contact conductance can be observed in a planar geometry. The data demonstrate that the Andreev-Saint-James [Sov. Phys. JETP 19, 1228 (1964) and J. Phys. (Paris) 25, 899 (1964)] electron-hole reflections at the FS interface, which are sensitive to the polarization of the F side, dominate the conductance of the contact at low bias. The simplicity of fabrication makes these junctions appealing for use in multiterminal SF structures.",

author = "S. Hacohen-Gourgy and B. Almog and G. Deutscher",

note = "Funding Information: The authors would like to thank A. Tsukernik for his help with the sample fabrication. This work was supported in part by Israel National Science Foundation.",

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doi = "10.1063/1.2909565",

language = "אנגלית",

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journal = "Applied Physics Letters",

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AU - Hacohen-Gourgy, S.

AU - Almog, B.

AU - Deutscher, G.

N1 - Funding Information: The authors would like to thank A. Tsukernik for his help with the sample fabrication. This work was supported in part by Israel National Science Foundation.

PY - 2008

Y1 - 2008

N2 - We fabricated nanoscale ferromagnetic (F) Nickel/superconducting (S) indium junctions which show that spin polarization effects on the contact conductance can be observed in a planar geometry. The data demonstrate that the Andreev-Saint-James [Sov. Phys. JETP 19, 1228 (1964) and J. Phys. (Paris) 25, 899 (1964)] electron-hole reflections at the FS interface, which are sensitive to the polarization of the F side, dominate the conductance of the contact at low bias. The simplicity of fabrication makes these junctions appealing for use in multiterminal SF structures.

AB - We fabricated nanoscale ferromagnetic (F) Nickel/superconducting (S) indium junctions which show that spin polarization effects on the contact conductance can be observed in a planar geometry. The data demonstrate that the Andreev-Saint-James [Sov. Phys. JETP 19, 1228 (1964) and J. Phys. (Paris) 25, 899 (1964)] electron-hole reflections at the FS interface, which are sensitive to the polarization of the F side, dominate the conductance of the contact at low bias. The simplicity of fabrication makes these junctions appealing for use in multiterminal SF structures.

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Observation of Andreev-Saint-James reflections in nano-scale planar superconductor to ferromagnet contacts

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