Ultrafast X-ray photoelectron diffraction in triatomic molecules by circularly polarized attosecond light pulses

2020 ◽  
Vol 22 (1) ◽  
pp. 325-336 ◽  
Author(s):  
Kai-Jun Yuan ◽  
André D. Bandrauk
Keyword(s):  
Circularly Polarized ◽  
X Ray ◽  
Triatomic Molecules ◽  
Photoelectron Diffraction ◽  
Light Pulses ◽  
Attosecond Pulses

We theoretically study ultrafast photoelectron diffraction in triatomic molecules with cyclic geometry by ultrafast circular soft X-ray attosecond pulses.

scholarly journals Magnetic X-Ray Circular Dichroism in Spin-Polarized Photoelectron Diffraction

1994 ◽  
Vol 375 ◽  
Author(s):  
G. D. Waddill ◽  
J. G. Tobin ◽  
X. Guo ◽  
S. Y. Tong
Keyword(s):  
Magnetic Structure ◽  
Multiple Scattering ◽  
Analytical Procedure ◽  
Structural Determination ◽  
X Rays ◽  
Circularly Polarized ◽  
X Ray ◽  
Photoelectron Diffraction ◽  
Spin Polarized ◽  
Energy Dependent

AbstractThe first structural determination with spin-polarized, energy-dependent photoelectron diffraction using circularly-polarized x-rays is reported for Fe films on Cu(001). Circularly-polarized x-rays produce spin-polarized photoelectrons from the Fe 2p doublet, and intensity asymmetries in the 2p3/2 level are observed. Fully spin-specific multiple scattering calculations reproduce the experimentally-determined energy and angular dependences. A new analytical procedure which focuses upon intensity variations due to spin-dependent diffraction is introduced. A sensitivity to local geometric and magnetic structure is demonstrated.

Circularly polarized X-ray photoelectron diffraction

2007 ◽  
Vol 156-158 ◽  
pp. 1-9 ◽  
Author(s):  
H. Daimon ◽  
F. Matsui ◽  
F.Z. Guo ◽  
T. Matsushita
Keyword(s):  
Circularly Polarized ◽  
X Ray ◽  
Photoelectron Diffraction

In Situ Magnetic-Circular-X-Ray-Dichroism Measurements: An Epitaxial Fe Wedge on Cu(100)

MRS Bulletin ◽  
1999 ◽  
Vol 24 (1) ◽  
pp. 41-45 ◽  
Author(s):  
M.E. Dávila ◽  
D. Arvanitis ◽  
J. Hunter Dunn ◽  
N. Mårtensson ◽  
P. Srivastava ◽  
...  
Keyword(s):  
Ultrathin Films ◽  
Magnetic Circular Dichroism ◽  
Polarized Light ◽  
Measured Quantity ◽  
Easy Magnetization ◽  
Magnetization Direction ◽  
Core Electron ◽  
Circularly Polarized ◽  
X Ray

Circularly polarized x-ray radiation is attracting increasing interest as a tool for the characterization of the electronic, magnetic, and chiral properties of low-dimensional structures. Using circular light (with electric field vector parallel to the orbital plane), a dependence of the measured quantity by changing either the orientation of the light polarization or the magnetization is indicative of the existence of magnetic circular dichroism. It can be observed in x-ray absorption spectroscopy (XAS), in which the photon energy is scanned through an absorption threshold exciting a core electron into an unoccupied valence state using circularly polarized light. Synchrotron radiation sources have made this technique possible. It can also be observed in photo-emission spectroscopy from core and valence levels. Here we focus on magnetic circular x-ray dichroism (MCXD) in XAS as an element-specific tool to investigate magnetic properties of ultrathin films in situ. The application of magneto-optical sum rules enables the determination of the orbital and spin magnetic moments per atom from XAS spectra, as well as the easy magnetization direction.MCXD-based magnetometry in XAS is extensively used by measuring the L absorption edges of 3d-transition metals, where large intensity changes (up to 60%) of the L-edge white lines are observed upon reversal of either the sample magnetization or the light helicity. The high magnetic contrast obtained, combined with the elemental specificity of the technique, allows for the study of very dilute samples such as ultrathin films. We first concentrate on the selection rules governing MCXD in XAS.

Substitution sites of Pb and Y in Bi2Sr2Ca1Cu2O8+δ: X-ray photoelectron diffraction as fingerprinting tool

1999 ◽  
Vol 75 (11) ◽  
pp. 1550-1552 ◽  
Author(s):  
Th. Pillo ◽  
J. Hayoz ◽  
P. Schwaller ◽  
H. Berger ◽  
P. Aebi ◽  
...  
Keyword(s):  
X Ray ◽  
Photoelectron Diffraction

Structure of the ZnO(0001) surface studied by X-ray photoelectron diffraction

1994 ◽  
Vol 222 (4) ◽  
pp. 349-352 ◽  
Author(s):  
M. Galeotti ◽  
A. Atrei ◽  
U. Bardi ◽  
G. Rovida ◽  
M. Torrini ◽  
...  
Keyword(s):  
X Ray ◽  
Photoelectron Diffraction

Spin-polarized photoelectron diffraction using circularly polarized x rays

1994 ◽  
Vol 50 (10) ◽  
pp. 6774-6778 ◽  
Author(s):  
G. D. Waddill ◽  
J. G. Tobin ◽  
X. Guo ◽  
S. Y. Tong
Keyword(s):  
X Rays ◽  
Circularly Polarized ◽  
Photoelectron Diffraction ◽  
Spin Polarized

Hard-X-ray Photoelectron Diffraction from Si(001) Covered by a 0–7-nm-Thick SiO2Layer

2010 ◽  
Vol 3 (5) ◽  
pp. 056701 ◽  
Author(s):  
Igor Píš ◽  
Masaaki Kobata ◽  
Tomohiro Matsushita ◽  
Hiroshi Nohira ◽  
Keisuke Kobayashi
Keyword(s):  
X Ray ◽  
Photoelectron Diffraction
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