Surface phonons of clean and hydrogen terminated Si(1 1 0) surfaces

Eremtchenko, M.; Tautz, F. Stefan; Öttking, R.; Polyakov, V. M.; Schwierz, Frank; Cherkashinin, G.; Schaefer, J.A.

doi:10.1016/j.susc.2005.03.013

Cited by 12 publications

(15 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is well known that adsorbed hydrogen has a considerable effect on the Si growth process and that hydrogenation of surfaces in solution as a final step of cleaning is a main technological step to form oxygen-free stable surfaces. Electrochemical process [5], wet chemical process [6][7][8] and hydrogen gas deposition process [9] have been used to prepare the hydrogen-terminated Si (110) surface. High quality monohydride Si(110) surfaces have been prepared by atomic hydrogen adsorption.…”

Section: Introductionmentioning

confidence: 99%

“…High quality monohydride Si(110) surfaces have been prepared by atomic hydrogen adsorption. However, depending upon the atomic hydrogen dose and the sample temperature during exposure, differently reconstructed surface structures, such as H:Si(110)-(1×1), H:Si(110)-(1×5), and H:Si(110)-(3×2), have been prepared [9]. The atomic geometry of H:Si(110)-(1×) has been determined by scanning tunneling microscopy [5,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…On the experimental side, Watanabe [6] has used infrared (IR) spectroscopy with multireflection attenuated total reflection (ATR), as well as polarized IR transmission spectroscopy in order to determine stretching and bending vibrations concerned with H adsorbed on Si (110). Eremtchenko and coworkers [9] have reported an investigation of the vibrational properties of clean and monohydride-terminated Si(110) surface, determined by means of high resolution electron loss spectroscopy (HREELS). Their results [9] supply the first available data on surface phonons and on the dispersion of H-Si stretching and bending bands at the Si(110) surface.…”

Section: Introductionmentioning

confidence: 99%

“…Eremtchenko and coworkers [9] have reported an investigation of the vibrational properties of clean and monohydride-terminated Si(110) surface, determined by means of high resolution electron loss spectroscopy (HREELS). Their results [9] supply the first available data on surface phonons and on the dispersion of H-Si stretching and bending bands at the Si(110) surface. Recently, Matsushita and co-workers [10] have measured the surface phonon dispersion curves for the H:Si(110)-(1×1) surface along the two high symmetry directions Γ-X and Γ-X ′ .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ab initio calculations of surface phonons of the hydrogen-terminated Si(110)-(1 × 1) surface

2016

View full text Add to dashboard Cite

A first-principles study, using a linear-response approach based on the pseudopotential method and the generalized gradient approximation, has been made to examine the phonon spectrum of the hydrogen-terminated Si (110)- (1×1) surface. The calculated results compare very well with the results determined from a recent high-resolution electron-energy-loss spectroscopy measurement. In particular, the energy locations and polarization characteristics of the H-Si bond bending and H-Si stretching surface phonon modes have been determined and discussed in detail. The zone-centre splitting of the two H-Si stretching surface phonon modes is found to 2.4 meV, which compares very well with the experimental value of 1.9 meV.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ab initio calculations of surface phonons of the hydrogen-terminated Si(110)-(1 × 1) surface

2016

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4] Until now, as a method for preparing the hydrogen-terminated Si(110)-(1×1) [H:Si(110)-(1×1)] surface, three kinds of processes are reported: wet chemical processes by Jakob et al, 5 Watanabe, 6 Arima et al, 7,8 and Clark et al, 9 electrochemical process by Ye et al 10 and hydrogen gas deposition process in UHV by Eremtchenko et al 11 The infrared (IR) absorption spectroscopy was used to detect the vibrational modes 5,6,8,9 on the surface and the atomic structure was observed by scanning tunneling microscopy. 7,8,10 Surface is the place where the bulk symmetry is broken and the presence of one-or two-dimensional elementary excitation is expected.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic surface phonon dispersion of the hydrogen-terminated Si(110)-(1×1) surface: One-dimensional phonons propagating along the glide planes

Matsushita¹,

Matsui²,

Kato³

et al. 2014

The Journal of Chemical Physics

View full text Add to dashboard Cite

We have measured the surface phonon dispersion curves on the hydrogen-terminated Si(110)-(1×1) surface with the two-dimensional space group of p2mg along the two highly symmetric and rectangular directions of ΓX and ΓX' using high-resolution electron-energy-loss spectroscopy. All the essential energy-loss peaks on H:Si(110) were assigned to the vibrational phonon modes by using the selection rules of inelastic electron scattering including the glide-plane symmetry. Actually, the surface phonon modes of even-symmetry to the glide plane (along ΓX) were observed in the first Brillouin zone, and those of odd-symmetry to the glide plane were in the second Brillouin zone. The detailed assignment was made by referring to theoretical phonon dispersion curves of Gräschus et al. [Phys. Rev. B 56, 6482 (1997)]. We found that the H-Si stretching and bending modes, which exhibit highly anisotropic dispersion, propagate along ΓX direction as a one-dimensional phonon. Judging from the surface structure as well as our classical and quantum mechanical estimations, the H-Si stretching phonon propagates by a direct repulsive interaction between the nearest neighbor H atoms facing each other along ΓX, whereas the H-Si bending phonon propagates by indirect interaction through the substrate Si atomic linkage.

show abstract

Influence of hydrogen on nanocrystalline diamond surfaces investigated with HREELS and XPS

Haensel

Uhlig

Koch

et al. 2009

Physica Status Solidi (a)

View full text Add to dashboard Cite

Nanocrystalline diamond (NCD) films are of great importance for many applications. They can be implemented as transparent protective coatings or for the use in electronic devices, sensor systems, and bioelectronic systems. In many applications the surface properties dictate the eventual performance of the device and, therefore, need to be thoroughly understood. This paper is devoted to investigating the changes occurring in the vibrational structure and surface chemical composition of hydrogencontaining NCD films as a function of annealing treatments as well as exposure to atomic hydrogen. High resolution electron energy loss spectroscopy (HREELS) as a surface sensitive method was utilized to analyze the temperaturecorrelated desorption of hydrogen and graphitization of the surface. These measurements were correlated with X-ray-induced photoelectron spectroscopy (XPS) measurements to study the chemical composition. Results indicate that water and graphitic-like contaminations are removed from the sample surface after annealing up to about 350 • C. Annealing the sample up to 950 • C decreases the hydrogen content drastically. At temperatures up to 1050 • C the C-H stretching and bending modes are not detectable, indicating that the hydrogen is totally removed from the surface. Analysis of the C 1s XPS spectra revealed that a graphitic-like phase is formed. An atomic hydrogen treatment was applied to get further information about the surface composition. Additionally, from our HREELS and XPS data we are able to determine the sp 2 /sp 3 ratio for the different surface treatments.

show abstract

Surface phonons of clean and hydrogen terminated Si(1 1 0) surfaces

Cited by 12 publications

References 32 publications

Ab initio calculations of surface phonons of the hydrogen-terminated Si(110)-(1 × 1) surface

Ab initio calculations of surface phonons of the hydrogen-terminated Si(110)-(1 × 1) surface

Anisotropic surface phonon dispersion of the hydrogen-terminated Si(110)-(1×1) surface: One-dimensional phonons propagating along the glide planes

Influence of hydrogen on nanocrystalline diamond surfaces investigated with HREELS and XPS

Contact Info

Product

Resources

About