Zobrazeno 1 - 10
of 30
pro vyhledávání: '"R. X. Ynzunza"'
Autor:
Charles S. Fadley, Warren E. Pickett, John Liesegang, F.Javier. Palomares, Zahid Hussain, R. Denecke, R. X. Ynzunza, Jonder Morais, Alexander B. Shick, E. D. Tober
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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The magnetic phase transitions for Gd(0 0 0 1) grown on W(1 1 0) - a bulk transition at 293 K and a surface transition about 85 K above this - are found to influence the energy separation of the Gd 5s and 4s core-photoelectron doublets. The 5s double
Autor:
Jonder Morais, Charles S. Fadley, Zahid Hussain, R. Denecke, E. D. Tober, F. J. García de Abajo, M. A. Van Hove, John Liesegang, Zaixin Wang, R. X. Ynzunza, Francisco Palomares
Publikováno v:
Surface Science. 459:69-92
We have studied the kinetics of the low-pressure adsorption of oxygen on W(110) via time- and chemical-state-resolved photoelectron spectroscopy (PS) and diffraction (PD). Using high-brightness third-generation synchrotron radiation from the Advanced
Autor:
Charles S. Fadley, R. X. Ynzunza, J. B. Kortright, Hiroshi Daimon, M. A. Van Hove, F. J. García de Abajo, Zahid Hussain, R. Denecke, E. D. Tober, Zaixin Wang, Francisco Palomares, Jonder Morais
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 106:7-28
We have measured the circular dichroism in angular distributions (CDAD) of W 4f emission from a stable one-monolayer structure of oxygen on W(110) that is locally (1×1) in character. Photoelectrons were excited at kinetic energies of approximately 2
Autor:
Hiroshi Daimon, M. A. Van Hove, Charles S. Fadley, Zaixin Wang, Yulin Chen, Francisco Palomares, Zahid Hussain, Ajith Kaduwela, R. X. Ynzunza, E. D. Tober
Publikováno v:
Surface Science. 441:301-310
The authors have studied the atomic structure of the clean W(110) surface by means of site-resolved scanned-angle W4f{sub 7/2} photoelectron diffraction (PD) data obtained over nearly the full 2{pi} solid angle above the surface. Prior to the availab
Autor:
Zaixin Wang, Yulin Chen, Francisco Palomares, Zahid Hussain, Hiroshi Daimon, R. Denecke, Charles S. Fadley, M. A. Van Hove, R. X. Ynzunza, E. D. Tober, Jonder Morais
Publikováno v:
Surface Science. 442:27-35
The local atomic geometry of oxygen adsorbed in a stable one monolayer (1×1) structure on W(110) has been determined for the first time from full solid angle site-resolved photoelectron diffraction (PD). This structure also exhibits an additional (1
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. :263-269
We report on the influence of photoelectron diffraction effects on magnetic circular dichroism in angular distribution as measured using core-level photoelectron spectroscopy. As an example system we study the effect by measuring azimuthal angle scan
Autor:
F. J. García de Abajo, Yulin Chen, Angelika Chassé, Ajith Kaduwela, Charles S. Fadley, R. X. Ynzunza, M. A. Van Hove
Publikováno v:
Physical Review B. 58:13121-13131
The Rehr-Albers (RA) separable Green's-function formalism, which is based on an expansion series, has been successful in speeding up multiple-scattering cluster calculations for photoelectron diffraction simulations, particularly in its second-order
Autor:
Zaixin Wang, Charles S. Fadley, E. D. Tober, Francisco Palomares, Ajith Kaduwela, R. X. Ynzunza, Hiroshi Daimon, M. A. Van Hove
Publikováno v:
Physical Review B. 58:9662-9665
Circular dichroism has been observed in the photoelectron diffraction of chemically shifted W $4f$ photoelectrons from the $\mathrm{W}(110)1\ifmmode\times\else\texttimes\fi{}1\ensuremath{-}\mathrm{O}$ surface. The diffraction peaks from first-layer W
Autor:
Zaixin Wang, H.C. Galloway, Y.J. Kim, C. Westphal, M. A. Van Hove, Charles S. Fadley, Miquel Salmeron, R. X. Ynzunza
Publikováno v:
Surface Science. 416:68-111
The three complementary surface structure probes of X-ray photoelectron diffraction (XPD), scanning tunneling microscopy (STM), and low-energy electron diffraction (LEED) have been combined in a single instrument. This experimental system has been ut
Autor:
John Liesegang, G. Bino, Jonder Morais, Zaixin Wang, R. X. Ynzunza, Zahid Hussain, E. D. Tober, R. Denecke, Francisco Palomares, Charles S. Fadley
Publikováno v:
Physical Review Letters. 81:2360-2363
Spin-polarized photoelectron diffraction (SPPD) has been used previously by the authors group to study two antiferromagnetic surfaces (KMnF{sub 3} (011) and MnO(001)) - these measurements provided evidence of a surface and/or short-range-order magnet