B. Reihl's research while affiliated with Technische Universität Dortmund and other places

... Scanning tunneling microscopy (STM) has been proven to be a capable technique to study and manipulate single molecules immobilized on surfaces [1][2][3][4][5][6][7]. In combination with a photon collection setup, its functionality can be extended to detect the light emitted from the junction [8][9][10][11][12][13][14][15][16]. For a molecule to emit light in a STM junction, it needs to be decoupled from the metallic substrate in order to reduce the hybridization of molecular orbitals. ...

... As a result, by combining scanning tunneling microscopes with photon detecting systems one can study the relation between electron-induced photon emission and local surface structure on atomic and mesoscopic size scales. 2 Gimzewski and coworkers reported the first STM-induced photon emission results from metals (i.e. Ag films) 2 and more recently showed variations in emission yield correlated with atomic spacings in the metallic lattice. ...

... In particular, features of the tunneling current-voltage characteristics determined using the method of scanning tunneling spectroscopy (STS) for nanoclusters of noble and transition metals on the surface of semiconductors [53,54] were inter preted as being due to a gap in the spectrum of electron states of nanoclusters and their transition to a nonme tallic state. In Ag and Pt clusters on HOPG, the STS measurements at T ≈ 5 K revealed discrete electron levels [55,56]. To the best of the authors' knowledge, no STS data on the electron structure of transition metal nanoclusters on the HOPG surface were reported in the literature. ...

... Fig. 14 Li has one of the lowest values of electronegativity of 0.98 [8], much lower than both Si and C. This would suggest in a simple pairing between Li adsorbates and unsaturated surface Si and C atoms, that a set of dipoles directed into the surface would form, reducing the potential difference between the SiC and vacuum, as seen in lithiated diamond and silicon [42,44,45]. The EA calculated for the equilibrium structure shown in Fig. 13 is just 0.08 eV (Table 1). ...

... This effect was theoretically predicted in principle by Villain et al. 58 back in the 1980s. Tilted domain walls were obtained experimentally by Grimm et al. 59 , where the authors showed that the rotation of the xenon lattice on the graphite surface at 4 K is explained by the rotation of hexagonal domain walls separating domains with a commensurate structure. ...

... Of the Group I elements, the interaction of potassium and sodium with the Si͑001͒ surface has been fairly well studied both theoretically and experimentally. [4][5][6][7][8][9][10][11][12] Recently, we have performed detailed calculations of the atomic and electronic structure of the Si͑001͒-Li chemisorption system, 13 and compared the results of these calculations with the existing experimental data, [14][15][16][17][18][19][20][21][22][23][24] and earlier theoretical work. 10,25,26 While some experimental work has been published on the interaction of Rb with the Si͑001͒ surface, [29][30][31][32][33] no theoretical investigation of this Si͑001͒-AM chemisorption system has been reported to our knowledge. ...