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Akademický článek

Transient crystalline superlattice generated by a photoacoustic transducer

Autor: A. Loether, Y. Gao, Z. Chen, M. F. DeCamp, E. M. Dufresne, D. A. Walko, H. Wen

Publikováno v: Structural Dynamics, Vol 1, Iss 2, Pp 024301-024301-6 (2014)

Designing an efficient and simple method for modulating the intensity of x-ray radiation on a picosecond time-scale has the potential to produce ultrafast pulses of hard x-rays. In this work, we generate a tunable transient superlattice, in an othe

Externí odkaz: https://doaj.org/article/861687377f0c4640a6978445ba2e0274

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Energy variation of double K -shell photoionization of Ne

Autor: S. H. Southworth, S. Li, D. Koulentianos, G. Doumy, L. Young, D. A. Walko, R. Püttner, D. Céolin, R. Guillemin, I. Ismail, O. Travnikova, M. N. Piancastelli, M. Simon, S. T. Manson, T. W. Gorczyca

Publikováno v: Physical Review A. 107

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ebe083a1665d62a5c6235dbe6584978b
https://doi.org/10.1103/physreva.107.023110

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Manifestation of postcollision interaction in Krypton LMN Auger spectra following K -shell photoionization

Autor: S. Li, D. Koulentianos, S. H. Southworth, G. Doumy, L. Young, D. A. Walko, R. Püttner, J. D. Bozek, D. Céolin, A. Verma, R. Guillemin, M. N. Piancastelli, M. Simon, L. G. Gerchikov, S. A. Sheinerman

Publikováno v: Physical Review A. 106

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea82ed2ca759e4e14fd948525dd76652
https://doi.org/10.1103/physreva.106.023110

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Adsorption sites of Te on Si(001)

Autor: P. A. Montano, Michael J. Bedzyk, Paul F. Lyman, H. L. Hutchason, M. E. Keeffe, D. L. Marasco, D. A. Walko

Publikováno v: Surface Science. 561:248-260

Using multiple surface science techniques, we have investigated the structure of 0.3–1 Te monolayers adsorbed on Si(0 0 1). X-ray standing waves, low-energy electron diffraction, temperature-programmed desorption, and Auger electron spectroscopy sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62da13aaa0dff0f96389d6c2e7598b8e
https://doi.org/10.1016/j.susc.2004.05.071

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X-ray scattering studies of surfactant mediated epitaxial growth of Si/Ge/Si(001) heterostructures

Autor: Osami Sakata, Michael J. Bedzyk, T.-L. Lee, D. L. Marasco, D. A. Walko, W. Rodrigues

Publikováno v: Journal of Applied Physics. 88:2391-2394

The strain and morphology of Si/Ge films grown by surfactant mediated molecular beam epitaxy on Si(001) with Bi as the surfactant were studied with grazing-incidence x-ray diffraction, x-ray reflectivity, low-energy electron diffraction, and Auger el

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed973ce17ea80e44dab5376190fb21a8
https://doi.org/10.1063/1.1288703

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X-ray scattering study of theGe(001):Te(1×1)surface structure

Autor: Paul F. Lyman, B. P. Tinkham, T.-L. Lee, Michael J. Bedzyk, Osami Sakata, David Marasco, D. A. Walko

Publikováno v: Physical Review B. 61:16692-16696

The 1x1 surface structure of Te adsorbed on Ge(001) was studied by analyzing the x-ray scattered intensity along several surface crystal truncation rods (CTR). The results were compared to simulations corresponding to the bridge, top, antibridge, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88c046b39dcf53bbf8406d2e2d742dc7
https://doi.org/10.1103/physrevb.61.16692

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SURFACE STRUCTURE OF O/Cu(104) FACETS DETERMINED BY X-RAY DIFFRACTION

Autor: D. A. Walko, I. K. Robinson

Publikováno v: Surface Review and Letters. :851-857

We have determined the surface structure of O/Cu(104) using X-ray diffraction. This surface was prepared by dosing Cu(115) with oxygen, transforming the clean surface into facets with {104} and {113} orientations. This method of preparation, in essen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d6af0d6a3356b2beee59bef89d81987
https://doi.org/10.1142/s0218625x99000901

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Multiple bonding configurations for Te adsorbed on the Ge(001) surface

Autor: Paul F. Lyman, D. L. Marasco, D. A. Walko, Michael J. Bedzyk

Publikováno v: Physical Review B. 60:8704-8712

Using high-resolution x-ray standing waves and low-energy electron diffraction, the structure of Te adsorbed on Ge(001) was studied. A coverage-dependent structural rearrangement was observed between Te coverages of 1 and 0.5 monolayer (ML). At Te co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eaf28eef8570984946a2cef84176425d
https://doi.org/10.1103/physrevb.60.8704

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Structure of Cu(115): Clean surface and its oxygen-induced facets

Autor: Ian K. Robinson, D. A. Walko

Publikováno v: Physical Review B. 59:15446-15456

Cu(001) vicinal surfaces facet when exposed to O. We have studied this process on Cu(115), which transforms from a clean surface to {104} and {113} facets, using surface x-ray diffraction. The Cu(115) surface exhibits a complex interlayer relaxation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcb428c88a4174ae008383725c4b7b5f
https://doi.org/10.1103/physrevb.59.15446

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Surface Structure ofα-Ga(010)

Autor: J. H. Bilgram, D. A. Walko, Ch. Grütter, I. K. Robinson

Publikováno v: Physical Review Letters. 81:626-629

We have determined the surface structure of {alpha}-Ga(010) near its melting point using x-ray diffraction. Of the two possible ideal ways to form the (010) surface, we find that the true surface is formed by cutting through dimer bonds (i.e., betwee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f515d8a9885c4cc0b6982600cbd01673
https://doi.org/10.1103/physrevlett.81.626

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