Image potential for stepped and corrugated surfaces

Clinton, William L.; Esrick, Mark A.; Ruf, Herbert J.

doi:10.1103/physrevb.31.722

Cited by 25 publications

(12 citation statements)

References 19 publications

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“…These differences may be linked to the different work functions of carbon nanotubes ( 5.0 eV [36]) and Au(111) ( 5.55 eV [37]), as well as to the cylindrical curvature of the DWNT surface. It was shown previously by Clinton et al that surface corrugation can significantly shift the energies at which ISs occur from the energies observed at flat surfaces [38]. Figure 2(d) is a 2D visualization of the dz/dV (V ) spectra taken along the blue arrow in (a).…”

mentioning

confidence: 74%

Probing quantized image-potential states at supported carbon nanotubes

Schouteden¹,

Volodin²,

Muzychenko

et al. 2010

Nanotechnology

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Discrete image-potential states (ISs) are revealed at double-walled carbon nanotubes by means of scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) in the distance-voltage z(V) spectroscopy mode. The nanotubes are supported by flat Au(111) substrates. Due to the high sensitivity of the hot IS electrons to local variations of the surface potential, they can be considered as a sensitive probe to investigate interactions with the supporting substrate and impurities or defects at the nanotube surface. ISs provide information on the local electronic structure as well as on the electron dynamics at supported nanotubes.

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confidence: 74%

Probing quantized image-potential states at supported carbon nanotubes

Schouteden¹,

Volodin²,

Muzychenko

et al. 2010

Nanotechnology

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“…The charge redistribution gives rise to a local dipole moment, which effectively acts as a lateral perturbation to the model potential in Eq. 2 [26]. 9 We extract the IPS peak voltages in the same way as in Fig.…”

Section: N=1 N=2 N=3mentioning

confidence: 99%

Probing image potential states on the surface of the topological semimetal antimony

Zhang

et al. 2020

Phys. Rev. B

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A point charge near the surface of a topological insulator is predicted to generate an image magnetic charge in addition to an image electric charge as a result of electrostatic screening. We use scanning tunneling spectroscopy to study image potential states (IPS) of the topological semimetal Sb(111) surface. We observe five IPS with discrete energy levels well described by a one-dimensional model. Our investigation of the spatial variation of the IPS near surface step edges indicates an interaction between image charges. Our study of these IPS allows the exploration of the image charge geometry necessary to realize and manipulate a magnetic charge. arXiv:1907.08602v1 [cond-mat.mes-hall]

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“…In many physical situations of interaction between bodies, in a certain scale of length the corrugation of their surfaces may have to be taken into account, for instance in the calculation of the image potential of a charge in the vicinity of a surface [1]. In this case, most surfaces have some degree of corrugation, or imperfections, that influences the image potential [2].…”

Section: Introductionmentioning

confidence: 99%

“…The behavior of these electrons can reveal important physical and chemical surface information [4], for instance in low energy electrons diffraction, the image potential states are responsible for a whole variety of low energy structures that are attributed to surface resonance above the vacuum state [5]. These mentioned effects occur when the charges are close to the surface, so that the image potential could present modifications when the surface has deformations [1,5]. In general, the fabrication of perfectly plane surfaces is almost impossible [2], so that the consideration of corrugation effects in the image potential has to be taken into account.…”

Section: Introductionmentioning

confidence: 99%

“…Until 1980, the majority of the investigations on the image potential effects have been made considering that the interfaces between two dielectric media were planar [2]. In early 1985, Clinton, Esrick and Sacks calculated the image potential for a point charge in vacuum in the presence of a nonplanar metallic surface [1]. They showed that ions and electrons are always attracted to the elevated part of the surface [1].…”

Section: Introductionmentioning

confidence: 99%

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