%0 Journal Article %1 MOSER2023147278 %A Moser, S. %D 2022 %J J. Electron Spectrosc. Relat. Phenom. %K a %N 262 %P 147278 %R 10.1016/j.elspec.2022.147278 %T A toy model for dichroism in angle resolved photoemission %U https://www.sciencedirect.com/science/article/pii/S0368204822001116 %V 262 %X Angle-resolved photoemission spectroscopy (ARPES) measures the interference of dipole allowed Coulomb wavelets from the individual orbital emitters that contribute to an electronic band. If Coulomb scattering of the outgoing electron is neglected, this Huygens view of ARPES simplifies to a Fraunhofer diffraction experiment, and the relevant cross-sections to orbital Fourier transforms. This plane wave approximation (PWA) is surprisingly descriptive of photoelectron distributions, but fails to reproduce kinetic energy dependent final state effects like dichroism. Yet, Huygens principle of ARPES can be parsimoniously adapted to allow for distortion and phase shift of the outgoing Coulomb wave. This retains the strong physical intuition and low computational cost of the PWA, but naturally captures momentum dependent interference phenomena that so far required relativistic one-step modeling, such as linear dichroism in Rashba systems BiAg2 and AgTe.

@article{MOSER2023147278, abstract = {Angle-resolved photoemission spectroscopy (ARPES) measures the interference of dipole allowed Coulomb wavelets from the individual orbital emitters that contribute to an electronic band. If Coulomb scattering of the outgoing electron is neglected, this Huygens view of ARPES simplifies to a Fraunhofer diffraction experiment, and the relevant cross-sections to orbital Fourier transforms. This plane wave approximation (PWA) is surprisingly descriptive of photoelectron distributions, but fails to reproduce kinetic energy dependent final state effects like dichroism. Yet, Huygens principle of ARPES can be parsimoniously adapted to allow for distortion and phase shift of the outgoing Coulomb wave. This retains the strong physical intuition and low computational cost of the PWA, but naturally captures momentum dependent interference phenomena that so far required relativistic one-step modeling, such as linear dichroism in Rashba systems BiAg2 and AgTe.}, added-at = {2023-04-06T15:22:39.000+0200}, author = {Moser, S.}, biburl = {https://www.bibsonomy.org/bibtex/2403dd5a3a5717b174f0bcd767b5d1a09/ctqmat}, day = 05, description = {A toy model for dichroism in angle resolved photoemission }, doi = {10.1016/j.elspec.2022.147278}, interhash = {37ed7ad16d67e99ae75297f7d59bb164}, intrahash = {403dd5a3a5717b174f0bcd767b5d1a09}, issn = {0368-2048}, journal = {J. Electron Spectrosc. Relat. Phenom.}, keywords = {a}, month = {12}, number = 262, pages = 147278, timestamp = {2023-10-16T07:39:16.000+0200}, title = {A toy model for dichroism in angle resolved photoemission}, url = {https://www.sciencedirect.com/science/article/pii/S0368204822001116}, volume = 262, year = 2022 }