Multi-color imaging of magnetic Co/Pt heterostructures

Willems, Felix; Schmising, Clemens von Korff; Weder, David; Günther, C.; Schneider, Michael; Pfau, Bastian; Meise, Sven; Guehrs, Erik; Geilhufe, Jan; Merhe, Aladine; Jal, Emmanuelle; Vodungbo, Boris; Lüning, J.; Mahieu, B.; Capotondi, Flavio; Pedersoli, Emanuele; Gauthier, David; Manfredda, Michele; Eisebitt, Stefan

doi:10.1063/1.4976004

Cited by 39 publications

(29 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, a first experiment has demonstrated a so-called two-color setup, where the magnetic response of two different components in a complex heterostructure was recorded simultaneously at an XFEL source [80].…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

The 2017 Magnetism Roadmap

Sander

Valenzuela

Makarov

et al. 2017

J. Phys. D: Appl. Phys.

316

207

View full text Add to dashboard Cite

Building upon the success and relevance of the 2014 Magnetism Roadmap, this 2017 Magnetism Roadmap edition follows a similar general layout, even if its focus is naturally shifted, and a different group of experts and, thus, viewpoints are being collected and presented. More importantly, key developments have changed the research landscape in very relevant ways, so that a novel view onto some of the most crucial developments is warranted, and thus, this 2017 Magnetism Roadmap article is a timely endeavour. The change in landscape is hereby not exclusively scientific, but also reflects the magnetism related industrial application portfolio. Specifically, Hard Disk Drive technology, which still dominates digital storage and will continue to do so for many years, if not decades, has now limited its footprint in the scientific Topical ReviewOriginal content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. and research community, whereas significantly growing interest in magnetism and magnetic materials in relation to energy applications is noticeable, and other technological fields are emerging as well. Also, more and more work is occurring in which complex topologies of magnetically ordered states are being explored, hereby aiming at a technological utilization of the very theoretical concepts that were recognised by the 2016 Nobel Prize in Physics.Given this somewhat shifted scenario, it seemed appropriate to select topics for this Roadmap article that represent the three core pillars of magnetism, namely magnetic materials, magnetic phenomena and associated characterization techniques, as well as applications of magnetism. While many of the contributions in this Roadmap have clearly overlapping relevance in all three fields, their relative focus is mostly associated to one of the three pillars. In this way, the interconnecting roles of having suitable magnetic materials, understanding (and being able to characterize) the underlying physics of their behaviour and utilizing them for applications and devices is well illustrated, thus giving an accurate snapshot of the world of magnetism in 2017.The article consists of 14 sections, each written by an expert in the field and addressing a specific subject on two pages. Evidently, the depth at which each contribution can describe the subject matter is limited and a full review of their statuses, advances, challenges and perspectives cannot be fully accomplished. Also, magnetism, as a vibrant research field, is too diverse, so that a number of areas will not be adequately represented here, leaving space for further Roadmap editions in the future. However, this 2017 Magnetism Roadmap article can provide a frame that will enable the reader to judge where each subject and magnetism research field stands overall today and which directions it might take in the foreseeable future.The first mater...

show abstract

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

The 2017 Magnetism Roadmap

Sander

Valenzuela

Makarov

et al. 2017

J. Phys. D: Appl. Phys.

316

207

View full text Add to dashboard Cite

show abstract

“…To study such rich and complex spin dynamics governed by a distinct magnetic response of Co and Pt atoms as well as between the Co atom in bulk Co and in CoPt, time resolved XUV MCD is an ideal experimental probe as it can access the relevant dichroic resonances in the 50-75 eV spectral range simultaneously in a single measurement. However, quantitative element-specificity is challenging to achieve as the relevant M 23 -edge of Co and the N 67and O 23 -edges of Pt [24][25][26] are partly overlapped. Comparison of calculated tr-MCD spectra to both experiment and the calculated spin dynamics is therefore a requirement to assess the quality of calculated tr-MCD spectra as well as comment on the element specificity of tr-MCD technique itself.…”

mentioning

confidence: 99%

Element Specificity of Transient Extreme Ultraviolet Magnetic Dichroism

Dewhurst¹,

Willems²,

Elliott³

et al. 2020

Phys. Rev. Lett.

View full text Add to dashboard Cite

In this work we combine theory and experiment to study transient magnetic circular dichroism (tr-MCD) in the extreme ultraviolet spectral range (XUV) in bulk Co and CoPt. We use the abinitio method of real-time time-dependent density functional theory (RT-TDDFT) to simulate the magnetization dynamics in the presence of ultrafast laser pulses. From this we demonstrate how tr-MCD may be calculated using an approximation to the excited-state linear-response. We apply this approximation to Co and CoPt and show computationally that element-specific dynamics of the local spin moments can be extracted from the tr-MCD in XUV energy range, as is commonly assumed. We then compare our theoretical prediction for the tr-MCD for CoPt with experimental measurement and find excellent agreement at many different frequencies including the M23-edge of Co and N67-and O23-edges of Pt. arXiv:1909.00199v1 [cond-mat.mtrl-sci]

show abstract

“…In particular, spin-and time-resolved two-photon photoemission [17] has been shown to be a powerful method to study metal-semiconductor interfaces, while fs light sources with energies in the extreme ultraviolet and soft x-ray regime have been employed to gain layer specificity in metallic multilayer systems [9,13,[18][19][20][21][22][23]. However, the latter techniques either require large-scale photon facilities or are experimentally fairly challenging.…”

mentioning

confidence: 99%