TY  - JOUR
AU  - Song, Dongsheng
AU  - Li, Zi-An
AU  - Caron, Jan
AU  - Kovács, András
AU  - Tian, Huanfang
AU  - Jin, Chiming
AU  - Du, Haifeng
AU  - Tian, Mingliang
AU  - Li, Jianqi
AU  - Zhu, Jing
AU  - Dunin-Borkowski, Rafal
TI  - Quantification of Magnetic Surface and Edge States in an FeGe Nanostripe by Off-Axis Electron Holography
JO  - Physical review letters
VL  - 120
IS  - 16
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2018-01991
SP  - 167204
PY  - 2018
AB  - 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 MS by analyzing the projected in-plane magnetization distributions of helices and Skyrmions. Values of MS 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.
LB  - PUB:(DE-HGF)16
C6  - pmid:29756913
UR  - <Go to ISI:>//WOS:000430383200007
DO  - DOI:10.1103/PhysRevLett.120.167204
UR  - https://juser.fz-juelich.de/record/844587
ER  -