End states in one-dimensional atom chains

Science

Volumn 307, Issue 5710, 2005, Pages 703-706

  Crain, J N ^a   Pierce, D T ^a  

^a NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON ENERGY LEVELS; GOLD; SELF ASSEMBLY; SILICON; SPECTROSCOPIC ANALYSIS; SURFACE PHENOMENA;

ONE-DIMENSIONAL ATOM CHAINS; SCANNING TUNNELING SPECTROSCOPY;

CRYSTAL STRUCTURE;

ALUMINUM; COPPER; GOLD; NICKEL; SILICON;

CRYSTAL;

ARTICLE; ATOM; CHEMICAL STRUCTURE; CONDUCTANCE; CRYSTAL STRUCTURE; ELECTRON; PHASE TRANSITION; PRIORITY JOURNAL; QUANTUM MECHANICS; SCANNING TUNNELING MICROSCOPY;

EID: 13244295342     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1106911     Document Type: Article

References (28)

1. A. Zangwill, Physics at Surfaces (University Press, Cambridge, 1988).
2. S. G. Davison, M. Stȩślicka, Basic Theory of Surface States (Oxford Univ. Press, New York, 1992).
3. M. V. Bollinger et al., Phys. Rev. Lett. 87, 196803 (2001).
4. L. Burgi, O. Jeandupeux, A. Hirstein, H. Brune, K. Kern, Phys. Rev. Lett. 81, 5370 (1998).
5. M. F. Crommie, C. P. Lutz, D. M. Eigler, Nature 363, 524 (1993).
6. Y. Hasegawa, P. Avouris, Phys. Rev. Lett. 71, 1071 (1993).
7. J. Repp, G. Meyer, K. H. Rieder, Phys. Rev. Lett. 92, 036803 (2004).
8. M. F. Crommie, C. P. Lutz, D. M. Eigler, Science 262, 218 (1993).
9. N. Nilius, T. M. Wallis, W. Ho, Science 297, 1853 (2002).
10. T. M. Wallis, N. Nilius, W. Ho, Phys. Rev. Lett. 89, 236802 (2002).
11. S. Folsch, P. Hyldgaard, R. Koch, K. H. Ploog, Phys. Rev. Lett. 92, 056803 (2004).
12. J. N. Crain et al., Phys. Rev. B 69, 125401 (2004).
13. J. R. Ahn, H. W. Yeom, H. S. Yoon, I. W. Lyo, Phys. Rev. Lett. 91, 196403 (2003).
14. K. N. Altmann et al., Phys. Rev. B 64, 035406 (2001).
15. R. Losio et al., Phys. Rev. Lett. 86, 4632 (2001).
16. P. Segovia, D. Purdie, M. Hengsberger, Y. Baer, Nature 402, 504 (1999).
17. An STS study of Si(111) 5x2-Au revealed 1D Schottky barriers between insulating and metallic chain segments.
18. H. S. Yoon, S. J. Park, J. E. Lee, C. N. Whang, I. W. Lyo, Phys. Rev. Lett. 92, 096801 (2004).
19. J. N. Crain et al., Phys. Rev. Lett. 90, 176805 (2003).
20. J. R. Ahn, H. W. Yeom, H. S. Yoon, I. W. Lyo, Phys. Rev. Lett. 91, 196403 (2003).
21. H. W. Yeom et al., Phys. Rev. Lett. 82, 4898 (1999).
22. M. M. J. Bischoff, T. Yamada, A. J. Quinn, H. van Kempen, Surf. Sci. 501, 155 (2002).
23. Two caveats must be considered in interpreting any spatially resolved STS measurements. The DOS is convolved with the finite size of the tip leading to a spatial broadening. Also, a constant-current set point determines the tip-sample separation for each measurement, leading to an exponential increase in the differential conductivity when the tip-sample separation decreases, such as off the ends of the chains.
24. 1 are ruled out from modeling longer chains.
25. J. N. Crain, D. T. Pierce, data not shown.
26. 2 are used.
27. R. F. Peierls, Quantum Theory of Solids (Clarendon, Oxford, 1955).
28. We thank M. D. Stiles for insightful discussions and suggestions concerning modeling, J. A. Stroscio for helpful discussions and for building the STM, R. J. Celotta and J. W. Gadzuk for helpful comments, and S. R. Blankenship for technical assistance. This work was supported in part by the Office of Naval Research.