Magnetic response and spin polarization of bulk Cr tips for in-field spin-polarized scanning tunneling microscopy

Marco Corbetta; Safia Ouazi; Jérôme Borme; Yasmine Nahas; Fabio Donati; Hirofumi Oka; Sebastian Wedekind; Dirk Sander; Jürgen Kirschner

doi:10.1143/JJAP.51.030208

Magnetic response and spin polarization of bulk Cr tips for in-field spin-polarized scanning tunneling microscopy

Marco Corbetta, Safia Ouazi, Jérôme Borme, Yasmine Nahas, Fabio Donati, Hirofumi Oka, Sebastian Wedekind, Dirk Sander, Jürgen Kirschner

Department of Physics

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

25 Scopus citations

Abstract

The magnetic properties of bulk Cr tips have been investigated by spin-polarized scanning tunneling spectroscopy (SP-STS). To extract the properties of the Cr tips, we performed low-temperature SP-STS measurements on a well-known model system: nanometric Co islands on Cu(111). Our experiments indicate the existence of uncompensated magnetic moments at the apex of the Cr tips, which rotate in the direction of the applied vertical magnetic field and become aligned with it at approximately 2 T.We extracted a tip spin polarization of 45% at the Fermi energy. We showed that the tip spin polarization can change with a modification of the tip apex.

Original language	English
Article number	030208
Journal	Japanese Journal of Applied Physics
Volume	51
Issue number	3 PART 1
DOIs	https://doi.org/10.1143/JJAP.51.030208
State	Published - Mar 2012

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title = "Magnetic response and spin polarization of bulk Cr tips for in-field spin-polarized scanning tunneling microscopy",

abstract = "The magnetic properties of bulk Cr tips have been investigated by spin-polarized scanning tunneling spectroscopy (SP-STS). To extract the properties of the Cr tips, we performed low-temperature SP-STS measurements on a well-known model system: nanometric Co islands on Cu(111). Our experiments indicate the existence of uncompensated magnetic moments at the apex of the Cr tips, which rotate in the direction of the applied vertical magnetic field and become aligned with it at approximately 2 T.We extracted a tip spin polarization of 45% at the Fermi energy. We showed that the tip spin polarization can change with a modification of the tip apex.",

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T1 - Magnetic response and spin polarization of bulk Cr tips for in-field spin-polarized scanning tunneling microscopy

AU - Corbetta, Marco

AU - Ouazi, Safia

AU - Borme, Jérôme

AU - Nahas, Yasmine

AU - Donati, Fabio

AU - Oka, Hirofumi

AU - Wedekind, Sebastian

AU - Sander, Dirk

AU - Kirschner, Jürgen

PY - 2012/3

Y1 - 2012/3

N2 - The magnetic properties of bulk Cr tips have been investigated by spin-polarized scanning tunneling spectroscopy (SP-STS). To extract the properties of the Cr tips, we performed low-temperature SP-STS measurements on a well-known model system: nanometric Co islands on Cu(111). Our experiments indicate the existence of uncompensated magnetic moments at the apex of the Cr tips, which rotate in the direction of the applied vertical magnetic field and become aligned with it at approximately 2 T.We extracted a tip spin polarization of 45% at the Fermi energy. We showed that the tip spin polarization can change with a modification of the tip apex.

AB - The magnetic properties of bulk Cr tips have been investigated by spin-polarized scanning tunneling spectroscopy (SP-STS). To extract the properties of the Cr tips, we performed low-temperature SP-STS measurements on a well-known model system: nanometric Co islands on Cu(111). Our experiments indicate the existence of uncompensated magnetic moments at the apex of the Cr tips, which rotate in the direction of the applied vertical magnetic field and become aligned with it at approximately 2 T.We extracted a tip spin polarization of 45% at the Fermi energy. We showed that the tip spin polarization can change with a modification of the tip apex.

UR - http://www.scopus.com/inward/record.url?scp=84858130393&partnerID=8YFLogxK

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DO - 10.1143/JJAP.51.030208

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SN - 0021-4922

VL - 51

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 3 PART 1

M1 - 030208

ER -

Magnetic response and spin polarization of bulk Cr tips for in-field spin-polarized scanning tunneling microscopy

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