Optimized thickness of superconducting aluminum electrodes for measurement of spin polarization with MgO tunnel barriers

Hyunsoo Yang; See Hun Yang; Stuart S P Parkin; Titus Leo; David Smith

doi:10.1063/1.2739333

Optimized thickness of superconducting aluminum electrodes for measurement of spin polarization with MgO tunnel barriers

Hyunsoo Yang, See Hun Yang, Stuart S P Parkin, Titus Leo, David Smith

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Abstract

Superconducting tunneling spectroscopy (STS) is one of the most useful techniques for measuring the tunneling spin polarization of magnetic materials, typically carried out using aluminum electrodes. Recent studies using MgO barriers have shown the extreme sensitivity of the spin polarization to annealing at temperatures up to ∼400 °C. Here the authors show that by optimizing the thickness of aluminum superconducting electrodes, STS measurements can be carried out even for such high annealing temperatures.

Original language	English (US)
Article number	202502
Journal	Applied Physics Letters
Volume	90
Issue number	20
DOIs	https://doi.org/10.1063/1.2739333
State	Published - May 28 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2739333

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title = "Optimized thickness of superconducting aluminum electrodes for measurement of spin polarization with MgO tunnel barriers",

abstract = "Superconducting tunneling spectroscopy (STS) is one of the most useful techniques for measuring the tunneling spin polarization of magnetic materials, typically carried out using aluminum electrodes. Recent studies using MgO barriers have shown the extreme sensitivity of the spin polarization to annealing at temperatures up to ∼400 °C. Here the authors show that by optimizing the thickness of aluminum superconducting electrodes, STS measurements can be carried out even for such high annealing temperatures.",

author = "Hyunsoo Yang and Yang, {See Hun} and Parkin, {Stuart S P} and Titus Leo and David Smith",

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AU - Yang, Hyunsoo

AU - Yang, See Hun

AU - Parkin, Stuart S P

AU - Leo, Titus

AU - Smith, David

PY - 2007/5/28

Y1 - 2007/5/28

N2 - Superconducting tunneling spectroscopy (STS) is one of the most useful techniques for measuring the tunneling spin polarization of magnetic materials, typically carried out using aluminum electrodes. Recent studies using MgO barriers have shown the extreme sensitivity of the spin polarization to annealing at temperatures up to ∼400 °C. Here the authors show that by optimizing the thickness of aluminum superconducting electrodes, STS measurements can be carried out even for such high annealing temperatures.

AB - Superconducting tunneling spectroscopy (STS) is one of the most useful techniques for measuring the tunneling spin polarization of magnetic materials, typically carried out using aluminum electrodes. Recent studies using MgO barriers have shown the extreme sensitivity of the spin polarization to annealing at temperatures up to ∼400 °C. Here the authors show that by optimizing the thickness of aluminum superconducting electrodes, STS measurements can be carried out even for such high annealing temperatures.

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Optimized thickness of superconducting aluminum electrodes for measurement of spin polarization with MgO tunnel barriers

Abstract

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