Graphene Sublattice Symmetry and Isospin Determined by Circular Dichroism in Angle-Resolved Photoemission Spectroscopy

Nano Letters ◽  
2012 ◽  
Vol 12 (8) ◽  
pp. 3900-3904 ◽  
Author(s):  
Isabella Gierz ◽  
Matti Lindroos ◽  
Hartmut Höchst ◽  
Christian R. Ast ◽  
Klaus Kern
Keyword(s):  
Circular Dichroism ◽  
Photoemission Spectroscopy ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Circular Dichroïsm

ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY AND MAGNETIC CIRCULAR DICHROISM IN Fe-INTERCALATED TiS2

2002 ◽  
Vol 09 (02) ◽  
pp. 961-966 ◽  
Author(s):  
A. YAMASAKI ◽  
S. IMADA ◽  
A. SEKIYAMA ◽  
S. SUGA ◽  
T. MATSUSHITA ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Magnetic Moment ◽  
Energy Band ◽  
Magnetic Circular Dichroism ◽  
Magnetic Moments ◽  
Photoemission Spectroscopy ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Band Dispersion ◽  
Synchrotron Light ◽  
Circular Dichroïsm

In order to directly investigate the energy band dispersion and the origin of the magnetic moment in intercalation compounds Fe x TiS 2, we have measured the angle-resolved photoemission (ARPES) spectrum and the magnetic circular dichroism (MCD) of the soft X-ray core absorption (XAS) spectra using a synchrotron light source. The energy band dispersion is clearly observed in the Ti 2p3/2 (eg) on-resonance ARPES spectra. In the Ti 2p XAS spectra the MCD is clearly seen, suggesting that a magnetic moment is induced on the Ti atom through the hybridization with the Fe 3d orbitals. We quantitatively estimate the orbital and spin magnetic moments of the Fe and Ti atoms by using the magneto-optical sum rules.

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