TY - JOUR
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.
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U2 - 10.1143/JJAP.51.030208
DO - 10.1143/JJAP.51.030208
M3 - Article
AN - SCOPUS:84858130393
SN - 0021-4922
VL - 51
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 3 PART 1
M1 - 030208
ER -