TY  - JOUR
AU  - Zanfrognini, Matteo
AU  - Rotunno, Enzo
AU  - Rusz, Jan
AU  - Dunin Borkowski, Rafal E.
AU  - Karimi, Ebrahim
AU  - Frabboni, Stefano
AU  - Grillo, Vincenzo
TI  - Dynamical diffraction effects in STEM orbital angular momentum resolved electron energy-loss magnetic chiral dichroism
JO  - Physical review / B
VL  - 102
IS  - 18
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2020-05235
SP  - 184420
PY  - 2020
AB  - In this paper, we explore the properties of dynamical diffraction coefficients in orbital angular momentum resolved electron energy-loss magnetic chiral dichroism spectra, in a scanning transmission electron microscopy setup. We demonstrate that for basic zone axis geometries with fourfold or threefold symmetry the coefficients are constrained to have simplified forms. By exploiting these properties, we show how a dichroism spectrum accessible using this technique is only weakly dependent on sample thickness and, more generally, on dynamical diffraction effects. Our results indicate that in such cases it is possible to determine the orbital and spin components of atomic magnetic moments approximately from experimental spectra without the need for additional dynamical diffraction calculations.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000589902700002
DO  - DOI:10.1103/PhysRevB.102.184420
UR  - https://juser.fz-juelich.de/record/888821
ER  -