Phys. Rev. A Phys. Rev. B Phys. Rev. C Phys. Rev. D Phys. Rev. E Phys. Rev. ST AB Phys. Rev. Lett. Phys. Rev. (Series I) Phys. Rev. Rev. Mod. Phys. Vol:  Page or Article #:

[ Previous / Next Abstract | Issue Table of Contents | Bottom of Page ]

Physical Review Letters -- November 20, 2000 -- Volume 85, Issue 21 pp. 4606-4609

Topology-Induced Spin Frustrations at the Cr(001) Surface Studied by Spin-Polarized Scanning Tunneling Spectroscopy

M. Kleiber, M. Bode, R. Ravli, and R. Wiesendanger

Institute of Applied Physics and Microstructure Research Center, University of Hamburg, Jungiusstrasse 11, D-20355 Hamburg, Germany

(Received 30 May 2000)

The magnetic structure of the Cr(001) surface was investigated by spin-polarized scanning tunneling spectroscopy by making use of the spin-polarized surface state located close to the Fermi level. Periodic alternations of the intensity of the surface state peak in local tunneling spectra measured above different ferromagnetic terraces separated by monatomic steps confirm the topological antiferromagnetic order of the Cr(001) surface. Screw dislocations cause topology-induced spin frustration, leading to the formation of domain walls with a width of about 120 nm. ©2000 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v85/p4606
PACS: 75.30.Pd, 75.50.Ee, 75.60.Ch        Additional Information

References

1. C. L. Fu and A. J. Freeman, Phys. Rev. B 33, 1755 (1986). [ISI]
   
2. S. Blügel, D. Pescia, and P. H. Dederichs, Phys. Rev. B 39, 1392 (1989).
   
3. P. Bödeker et al., Phys. Rev. Lett. 81, 914 (1998).
   
4. E. J. Escorcia-Aparicio et al., Phys. Rev. Lett. 81, 2144 (1998). [ISI]
   
5. R. Wiesendanger et al., Phys. Rev. Lett. 65, 247 (1990). [ISI]
   
6. R. Wiesendanger et al., J. Vac. Sci. Technol. B 9, 519 (1991). [SPIN] [ISI]
   
7. M. Bode, M. Getzlaff, and R. Wiesendanger, Phys. Rev. Lett. 81, 4256 (1998). [ISI]
   
8. O. Pietzsch et al., Phys. Rev. Lett. 84, 5212 (2000). [ISI]
   
9. AFM/STM, Omicron Vacuumphysik GmbH, Taunusstein (Germany).
   
10. J. A. Stroscio et al., Phys. Rev. Lett. 75, 2960 (1995). [ISI]
    
11. M. Schmidt et al., Surf. Sci. 377–379, 1023 (1997). [INSPEC] [ISI]
    
12. H. C. Manoharan, C. P. Lutz, and D. M. Eigler, Nature (London) 403, 512 (2000). [INSPEC] [ISI]
    
13. R. Wiesendanger and H.-J. Güntherodt, Surf. Sci. 235, 1 (1990). [INSPEC] [ISI]
    
14. M. Bode, M. Getzlaff, and R. Wiesendanger, J. Vac. Sci. Technol. A 17, 2228 (1999). [ISI]
    
15. K. P. Kämper et al., Phys. Rev. Lett. 59, 2788 (1987).
    
16. H. Zabel, J. Phys. Condens. Matter 11, 9303 (1999). [INSPEC] [ISI]
    
17. D. Stoeffler and F. Gautier, in Magnetism and Structure in Systems of Reduced Dimensions, edited by R. F. C. Farrow et al. (Plenum Press, New York, 1993), p. 411.
    
18. H. P. Oepen and J. Kirschner, Phys. Rev. Lett. 62, 819 (1989). [ISI]
    
19. A. Davies et al., Phys. Rev. Lett. 76, 4175 (1996). [ISI]
    
20. U. Mick, M. Bode, and R. Wiesendanger (unpublished).
    
21. S. Heinze et al., Science 288, 1805 (2000). [INSPEC] [ISI]
    

Citing Articles

1. Resolving Complex Atomic-Scale Spin Structures by Spin-Polarized Scanning Tunneling Microscopy
   D. Wortmann et al., Phys. Rev. Lett. 86, 4132 (2001)