TY - JOUR

T1 - Estimating the Orientation of 4f Magnetic Moments by Classical Photoemission

AU - Usachov, Dmitry Yu

AU - Glazkova, Daria

AU - Tarasov, Artem V.

AU - Schulz, Susanne

AU - Poelchen, Georg

AU - Bokai, Kirill A.

AU - Vilkov, Oleg Yu

AU - Dudin, Pavel

AU - Kummer, Kurt

AU - Kliemt, Kristin

AU - Krellner, Cornelius

AU - Vyalikh, Denis V.

N1 - Publisher Copyright: © 2022 American Chemical Society.

PY - 2022/8/17

Y1 - 2022/8/17

N2 - To use efficiently the magnetic functionalities emerging at the surfaces or interfaces of novel lanthanides-based materials, there is a need for complementary methods to probe the atomic-layer resolved magnetic properties. Here, we show that 4f photoelectron spectroscopy is highly sensitive to the collective orientation of 4f magnetic moments and, thus, a powerful tool for characterizing the related properties. To demonstrate this, we present the results of systematic study of a family of layered crystalline 4f-materials, which are crystallized in the body-centered tetragonal ThCr2Si2 structure. Analysis of 4f spectra indicates that the 4f moments at the surface experience a strong reorientation with respect to the bulk, caused by changes of the crystal-electric field. The presented database of the computed 4f spectra for all trivalent rare-earth ions in their different MJ states will facilitate the estimation of the orientation of the 4f magnetic moments in the layered 4f-systems for efficient control of their magnetic properties.

AB - To use efficiently the magnetic functionalities emerging at the surfaces or interfaces of novel lanthanides-based materials, there is a need for complementary methods to probe the atomic-layer resolved magnetic properties. Here, we show that 4f photoelectron spectroscopy is highly sensitive to the collective orientation of 4f magnetic moments and, thus, a powerful tool for characterizing the related properties. To demonstrate this, we present the results of systematic study of a family of layered crystalline 4f-materials, which are crystallized in the body-centered tetragonal ThCr2Si2 structure. Analysis of 4f spectra indicates that the 4f moments at the surface experience a strong reorientation with respect to the bulk, caused by changes of the crystal-electric field. The presented database of the computed 4f spectra for all trivalent rare-earth ions in their different MJ states will facilitate the estimation of the orientation of the 4f magnetic moments in the layered 4f-systems for efficient control of their magnetic properties.

UR - http://www.scopus.com/inward/record.url?scp=85136644772&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/fe57c827-4915-3032-83e7-0548196cb4e4/

U2 - 10.1021/acs.jpclett.2c02203

DO - 10.1021/acs.jpclett.2c02203

M3 - Article

C2 - 35977384

AN - SCOPUS:85136644772

VL - 13

SP - 7861

EP - 7869

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 33

ER -