Scanning tunneling microscopy states

Zheng Z F, Salmeron M B and Weber E R 1994 Empty state and filled state image of Zn acceptor in GaAs studied by scanning tunnelling microscopy Appl. Rhys. Lett. 64 1836... 

Scanning tunneling spectroscopy (STS) can, in principle, probe the electronic density of states of a singlewall nanotube, or the outermost cylinder of a multi-wall tubule, or of a bundle of tubules. With this technique, it is further possible to carry out both STS and scanning tunneling microscopy (STM) measurements at the same location on the same tubule and, therefore, to measure the tubule diameter concurrently with the STS spectrum. No reports have yet been made of a determination of the chiral angle of a tubule with the STM technique. Several groups have, thus far, attempted STS studies of individual tubules. 

I believe, it is fair to state that scanning tunneling microscopy and related techniques such as atomic force microscopy have a tremendeous potential in metal deposition studies. The inherent nature of the deposition process which is strongly influenced by the defect structure of the substrate, providing nucleation centers, requires imaging in real space for a detailed picture of the initial stages. This is possible with an STM, the atomic resolution being an extra bonus which helps to understand these processes on... 

N. Kuiiyama, D. Chartouni, M. Tsukahara, K. Takahashi, H.T. Takeshita, H. Tanaka, L. Schlapbach, T. Sakai, I. Uehara, Scanning tunneling microscopy in situ observation of phase-selective cathodic hydrogenation of a V-Ti-Ni-based multiphase alloy electrode, Electrochem. Solid-State Lett. 1 (1998) 37-38. 

Chen, C. J. (1992c). Effect of m K) tip states in scanning tunneling microscopy the explanations of corrugation reversal. Phys. Rev. Lett. 69, 1656-1659. 

Ohnishi, S., and Tsukada, M. (1989). Molecular orbital theory for scanning tunneling microscopy. Solid State Commun. 71, 391-394. 

Scanning tunnelling microscopy (STM) and related techniques are unique tools available today for a real space view of the atomic structure and electron states of solids. 

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