Probing absolute spin polarization at the nanoscale.
作者： Matthias Eltschka , Berthold Jäck , Maximilian Assig , Oleg V. Kondrashov , Mikhail A. Skvortsov
DOI: 10.1021/NL5037947
关键词:
摘要: Probing absolute values of spin polarization at the nanoscale offers insight into fundamental mechanisms spin-dependent transport. Employing Zeeman splitting in superconducting tips (Meservey-Tedrow-Fulde effect), we introduce a novel spin-polarized scanning tunneling microscopy that combines probing capability with precise control atomic scale. We utilize our approach to measure locally resolved magnetic Co nanoislands on Cu(111). find is enhanced by 65% when increasing width tunnel barrier only 2.3 angstrom due different decay electron orbitals vacuum.
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Maria Stęślicka, Sydney G. Davison, Basic Theory of Surface States ,(1992)
L. Diekhöner, M. A. Schneider, A. N. Baranov, V. S. Stepanyuk, P. Bruno, K. Kern, Surface states of cobalt nanoislands on Cu(111) Physical Review Letters. ,vol. 90, pp. 236801- ,(2003) , 10.1103/PHYSREVLETT.90.236801
O. Pietzsch, S. Okatov, A. Kubetzka, M. Bode, S. Heinze, A. Lichtenstein, R. Wiesendanger, Spin-resolved electronic structure of nanoscale cobalt islands on Cu(111). Physical Review Letters. ,vol. 96, pp. 237203- 237203 ,(2006) , 10.1103/PHYSREVLETT.96.237203
O. Pietzsch, A. Kubetzka, M. Bode, R. Wiesendanger, Spin-polarized scanning tunneling spectroscopy of nanoscale cobalt islands on Cu(111). Physical Review Letters. ,vol. 92, pp. 057202- ,(2004) , 10.1103/PHYSREVLETT.92.057202
A. A. Khajetoorians, J. Wiebe, B. Chilian, R. Wiesendanger, Realizing all-spin-based logic operations atom by atom. Science. ,vol. 332, pp. 1062- 1064 ,(2011) , 10.1126/SCIENCE.1201725
Shinji Yuasa, Taro Nagahama, Akio Fukushima, Yoshishige Suzuki, Koji Ando, Giant room-temperature magnetoresistance in single-crystal Fe/MgO/Fe magnetic tunnel junctions Nature Materials. ,vol. 3, pp. 868- 871 ,(2004) , 10.1038/NMAT1257
M. Julliere, Tunneling between ferromagnetic films Physics Letters A. ,vol. 54, pp. 225- 226 ,(1975) , 10.1016/0375-9601(75)90174-7
Markus Etzkorn, Axel Enders, Wolfgang Stiepany, Christian R. Ast, Klaus Kern, Maximilian Assig, A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields Review of Scientific Instruments. ,vol. 84, pp. 033903- ,(2013) , 10.1063/1.4793793
D. C. Worledge, T. H. Geballe, Maki analysis of spin-polarized tunneling in an oxide ferromagnet Physical Review B. ,vol. 62, pp. 447- 451 ,(2000) , 10.1103/PHYSREVB.62.447
Roland Wiesendanger, Spin mapping at the nanoscale and atomic scale Reviews of Modern Physics. ,vol. 81, pp. 1495- 1550 ,(2009) , 10.1103/REVMODPHYS.81.1495