Spin Polarimetry and Magnetic Dichroism on a Buried Magnetic Layer Using Hard X-ray Photoelectron Spectroscopy

Stryganyuk, G.; Kozina, Xeniya; Fecher, Gerhard H.; Ouardi, Siham; Chadov, Stanislav; Felser, Claudia; Schönhense, G.; Lushchyk, Pavel; Oelsner, A.; Bernhard, Patrick; Ikenaga, Eiji; Sugiyama, Takeharu; Sukegawa, Hiroaki; Wen, Zhenchao; Inomata, K.; Kobayashi, Keisuke

doi:10.7567/jjap.51.016602

Cited by 7 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, first spin resolved HAXPES experiments were reported [31,32]. The much higher intensities (by three orders of magnitude) in spin integrated spectra makes HAXPES-MCDAD attractive for the studies of magnetic bulk materials and buried thin films in material science.…”

Section: Discussionmentioning

confidence: 99%

Magnetic dichroism in angular resolved hard X-ray photoelectron spectroscopy from buried magnetic layers

ViolBarbosa

Ouardi

Fecher

et al. 2013

Journal of Electron Spectroscopy and Related Phenomena

Self Cite

View full text Add to dashboard Cite

This work reports on the measurement of magnetic dichroism in angularresolved photoelectron spectroscopy from in-plane magnetized buried thin films. The high bulk sensitivity of hard X-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation enables the investigation of the magnetic properties of buried layers. Angular distributions of high kinetic energy (7 to 8 keV) photoelectrons in a range of about 60 • were recorded in parallel to the energy distribution. Depending on purpose, energy and angular resolutions of 150 to 250 meV and 0.17 • to 2 • can be accomplished simultaneously in such experiments. Experiments were performed on exchange-biased magnetic layers covered by thin oxide films. More specifically, the angular distribution of photoelectrons from the ferromagnetic layer Co 2 FeAl layer grown on MnIr exchange-biasing layer was investigated where the magnetic structure is buried beneath a MgO layer. Pronounced magnetic dichroism is found in the Co and Fe 2p states for all angles of emission. A slightly increased magnetic dichroism was observed for normal emission in agreement with theoretical considerations.

show abstract

Section: Discussionmentioning

confidence: 99%

Magnetic dichroism in angular resolved hard X-ray photoelectron spectroscopy from buried magnetic layers

ViolBarbosa

Ouardi

Fecher

et al. 2013

Journal of Electron Spectroscopy and Related Phenomena

Self Cite

View full text Add to dashboard Cite

show abstract

“…Early core level measurements at ferromagnets used laboratory sources [279][280][281]. The feasibility of spin-HAXPES has been shown at several synchrotron endstations with different types of spin detectors, including P09 at PETRA III using a mini-Mott detector [254], and several SPring-8 beamlines, including at BL47XU using a W(100)-type SPLEED detector [282], at BL15XU using forward Mott scattering in an Au film covering a FeNi sample [283], and at BL09XU using the same SPLEED detector [284]. In all four experiments, the spin-polarisation of the Fe 2p core level spectrum was recorded and an example is shown in figure 12(a) (from [254]).…”

Section: Spin-resolved Haxpesmentioning

confidence: 99%

Hard x-ray photoelectron spectroscopy: a snapshot of the state-of-the-art in 2020

Kalha

Fernando

Bhatt

et al. 2021

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

Hard X-ray photoelectron spectroscopy (HAXPES) is establishing itself as an essential technique for the characterisation of materials. The number of specialised photoelectron spectroscopy techniques making use of hard X-rays is steadily increasing and ever more complex experimental designs enable truly transformative insights into the chemical, electronic, magnetic, and structural nature of materials. This paper begins with a short historic perspective of HAXPES and spans from developments in the early days of photoelectron spectroscopy to provide an understanding of the origin and initial development of the technique to state-of-the-art instrumentation and experimental capabilities. The main motivation for and focus of this paper is to provide a picture of the technique in 2020, including a detailed overview of available experimental systems worldwide and insights into a range of specific measurement modi and approaches. We also aim to provide a glimpse into the future of the technique including possible developments and opportunities.

show abstract

“…In the x-ray range only a few spin-resolved core level measurements at ferromagnets have been performed using lab sources [12][13][14] and hard x-rays [15,16]. In the valence range two angle-integrating measurements have been published [17,18]; in both experiments the spin signal was close to the detection limit.…”

Section: Introductionmentioning

confidence: 99%

Relation between spin–orbit induced spin polarization, Fano-effect and circular dichroism in soft x-ray photoemission

Vasilyev

Medjanik

Babenkov

et al. 2019

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

A Feynman diagram analysis of photoemission probabilities suggests a relation between two final-state spin polarization effects, the optical spin-orientation originating from the interaction with circularly polarized light ( P OO , Fano effect) and the spin polarization induced by the spin-orbit scattering ( P ⊥ , Mott effect). The analysis predicts that P ⊥ is proportional to the product of P OO and the circular dichroism in the angular distribution (CDAD) of photoelectrons. To confirm this prediction, the spin polarization of photoelectrons excited by soft x-ray radiation from initial spin-degenerate bulk states of tungsten using time-of-flight momentum microscopy with parallel spin detection has been measured. By measurement of four independent photoemission intensities for two opposite spin directions and opposite photon helicity, CDAD, Fano, and Mott effect are distinguished. The results confirm the prediction from the Feynman diagram analysis.

show abstract

Spin Polarimetry and Magnetic Dichroism on a Buried Magnetic Layer Using Hard X-ray Photoelectron Spectroscopy

Cited by 7 publications

References 19 publications

Magnetic dichroism in angular resolved hard X-ray photoelectron spectroscopy from buried magnetic layers

Magnetic dichroism in angular resolved hard X-ray photoelectron spectroscopy from buried magnetic layers

Hard x-ray photoelectron spectroscopy: a snapshot of the state-of-the-art in 2020

Relation between spin–orbit induced spin polarization, Fano-effect and circular dichroism in soft x-ray photoemission

Contact Info

Product

Resources

About