|
Bismuth (Bi) has been observed to induce self-organized nanoline structures for example on Si(100) [1,2]. Such one-dimensional structures may have unique properties compared to the surface or bulk because of the increased electron correlation in these structures which arises from the electron confinement by the reduced dimensionality. Furthermore, very recentlly the Bi nanoline structures have been used as templates to grow other self-organized nanoscale assemblies such as arrays of metal nanoclusters [2]. Here we show that Bi induces nanoline-like reconstructions also on InAs(100) surface. We have found, that on top of the Bi/InAs(100)(2x1) structure [3,4], which itself has unique properties, Bi induces a (2x10) reconstruction which consists of arrays of Bi dimers 4,3 nm apart. The structural and electronic properties of this Bi-induced nanoline-like Bi/InAs(100)-(2x10) structure will be discussed.
[1] K. Miki, J.H.G. Owen, D.R. Bowler, G.A.D. Briggs, K. Sakamoto, Surface Science 421 (1999) 397.
[2] H. Koga and T. Ohno, Phys. Rev. B 74 (2006) 125405.
[3] M. Ahola-Tuomi, P. Laukkanen, R. E. Perälä, M. Kuzmin, J. Pakarinen, I. J. Väyrynen, M. Adell, Surf. Sci. 600 (2006) 2349.
[4] P. Laukkanen, J. Pakarinen, M. Ahola-Tuomi, M. Kuzmin, R. E. Perälä, I. J. Väyrynen, A. Tukiainen, J. Konttinen, P.Tuomisto, and M. Pessa, Phys. Rev. B 74 (2006) 155302.
|