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Title: Ultrafast Optical Spin Injection into Image-Potential States of Cu(001)

Abstract

We report the observation of a net spin polarization in the n=1 image-potential state at the Cu(001) surface. The spin polarization is achieved by spin-selective multiphoton excitation of electrons from the spin-orbit split Cu d bands to the image-potential state using circularly polarized ultrafast light pulses. We show that by tuning the exciting photon energy, we can adjust the resonant coupling of the image-potential state to d bands of different double-group symmetry. This allows us to tune the spin polarization injected into the image-potential state.

Authors:
; ; ;  [1];  [2];  [3];  [4]
  1. Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Germany)
  2. CNISM, Sede consorziata di Genova, via Dodecaneso 33, I-16146 Genova (Italy)
  3. Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, CZ-12116 Prague 2 (Czech Republic)
  4. Department of Physics and Astronomy, University of Pittsburgh, PA 15260 (United States)
Publication Date:
OSTI Identifier:
20951455
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 22; Other Information: DOI: 10.1103/PhysRevLett.98.226601; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ELECTRONS; EXCITATION; MULTI-PHOTON PROCESSES; PHOTONS; POTENTIALS; PULSES; SPIN; SPIN ORIENTATION; VISIBLE RADIATION

Citation Formats

Winkelmann, A., Ocana, R., Lin, W.-C., Kirschner, J., Bisio, F., Nyvlt, M., and Petek, H.. Ultrafast Optical Spin Injection into Image-Potential States of Cu(001). United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.226601.
Winkelmann, A., Ocana, R., Lin, W.-C., Kirschner, J., Bisio, F., Nyvlt, M., & Petek, H.. Ultrafast Optical Spin Injection into Image-Potential States of Cu(001). United States. doi:10.1103/PHYSREVLETT.98.226601.
Winkelmann, A., Ocana, R., Lin, W.-C., Kirschner, J., Bisio, F., Nyvlt, M., and Petek, H.. Fri . "Ultrafast Optical Spin Injection into Image-Potential States of Cu(001)". United States. doi:10.1103/PHYSREVLETT.98.226601.
@article{osti_20951455,
title = {Ultrafast Optical Spin Injection into Image-Potential States of Cu(001)},
author = {Winkelmann, A. and Ocana, R. and Lin, W.-C. and Kirschner, J. and Bisio, F. and Nyvlt, M. and Petek, H.},
abstractNote = {We report the observation of a net spin polarization in the n=1 image-potential state at the Cu(001) surface. The spin polarization is achieved by spin-selective multiphoton excitation of electrons from the spin-orbit split Cu d bands to the image-potential state using circularly polarized ultrafast light pulses. We show that by tuning the exciting photon energy, we can adjust the resonant coupling of the image-potential state to d bands of different double-group symmetry. This allows us to tune the spin polarization injected into the image-potential state.},
doi = {10.1103/PHYSREVLETT.98.226601},
journal = {Physical Review Letters},
number = 22,
volume = 98,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}