Quantification of Magnetic Surface and Edge States in an FeGe Nanostripe by Off-Axis Electron Holography

Physical Review Letters
Dongsheng SongR E Dunin-Borkowski

Abstract

Whereas theoretical investigations have revealed the significant influence of magnetic surface and edge states on Skyrmonic spin texture in chiral magnets, experimental studies of such chiral states remain elusive. Here, we study chiral edge states in an FeGe nanostripe experimentally using off-axis electron holography. Our results reveal the magnetic-field-driven formation of chiral edge states and their penetration lengths at 95 and 240 K. We determine values of saturation magnetization M_{S} by analyzing the projected in-plane magnetization distributions of helices and Skyrmions. Values of M_{S} inferred for Skyrmions are lower by a few percent than those for helices. We attribute this difference to the presence of chiral surface states, which are predicted theoretically in a three-dimensional Skyrmion model. Our experiments provide direct quantitative measurements of magnetic chiral boundary states and highlight the applicability of state-of-the-art electron holography for the study of complex spin textures in nanostructures.

Associated Software

Oct 4, 2021·Abijith BahuleyanRafal E. Dunin-Borkowski
Jun 29, 2021·Dieter Weber, Alexander Clausen
Jun 29, 2021·Alexander Clausen, Dieter Weber
Jun 10, 2021·Jan CaronKarina Ruzaeva
Feb 16, 2021·Alexander ClausenDaniel S. Katz
Feb 18, 2020·Jay Schyndel vanKarina Ruzaeva
Feb 14, 2020·Jay Schyndel vanJan Caron
Feb 12, 2020·Karina RuzaevaAlexander Clausen
Feb 12, 2020·Knut Müller-CasparyRafal E. Dunin-Borkowski
Dec 12, 2019·Jay Schyndel vanVadim Migunov
Oct 7, 2019·Jan CaronDieter Weber
Oct 7, 2019·Karina RuzaevaDieter Weber
Oct 14, 2019·Magnus NordDieter Weber
Aug 13, 2020·Colin OphusBarnaby D.A. Levin
Nov 5, 2018·Matthew BryanRahul Chandra
Apr 23, 2020·Alexander ClausenVadim Migunov

References

Nov 19, 2004·Microscopy Research and Technique·Rafal E Dunin-BorkowskiAndrew Putnis
May 6, 2008·Microscopy Research and Technique·K IakoubovskiiK Furuya
Jun 1, 2013·Science·P MildeA Rosch
Dec 5, 2013·Nature Nanotechnology·Naoto Nagaosa, Yoshinori Tokura
Jan 7, 2015·Scientific Reports·Xichao ZhangF J Morvan
Oct 9, 2015·Nature Communications·Haifeng DuMingliang Tian
Mar 2, 2016·Scientific Reports·Lei ZhangYuheng Zhang
Mar 5, 2016·Science Advances·Takao MatsumotoNaoya Shibata
Sep 3, 2016·Physical Review Letters·A O LeonovK Inoue
Feb 28, 2017·Nature Communications·A O Leonov, M Mostovoy
Jun 6, 2017·Nature Communications·Chiming JinRafal E Dunin-Borkowski
Dec 9, 2017·Physical Review Letters·Fengshan ZhengRafal E Dunin-Borkowski

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