title: Stabilized Skyrmion Phase Detected in MnSi Nanowires by Dynamic Cantilever Magnetometry.
abstract: Using dynamic cantilever magnetometry we measure an enhanced skyrmion lattice phase extending from around 29 K down to at least 0.4 K in single MnSi nanowires (NWs). Although recent experiments on two-dimensional thin films show that reduced dimensionality stabilizes the skyrmion phase, our results are surprising given that the NW dimensions are much larger than the skyrmion lattice constant. Furthermore, the stability of the phase depends on the orientation of the NWs with respect to the applied magnetic field, suggesting that an effective magnetic anisotropy, likely due to the large surface-to-volume ratio of these nanostructures, is responsible for the stabilization. The compatibility of our technique with nanometer-scale samples paves the way for future studies on the effect of confinement and surfaces on magnetic skyrmions.
authors.affiliation: †Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Mehlin
authors.affiliation: †Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.|‡High Magnetic Field Laboratory, Chinese Academy of Science, Shushanhu Road 350, Hefei 230031, Anhui, P. R. China.
authors.forename: F
authors.initials: F
authors.lastname: Xue
authors.affiliation: §Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States.
authors.forename: D
authors.initials: D
authors.lastname: Liang
authors.affiliation: ‡High Magnetic Field Laboratory, Chinese Academy of Science, Shushanhu Road 350, Hefei 230031, Anhui, P. R. China.
authors.forename: H F
authors.initials: HF
authors.lastname: Du
authors.affiliation: §Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States.
authors.forename: M J
authors.initials: MJ
authors.lastname: Stolt
authors.affiliation: §Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States.
authors.forename: S
authors.initials: S
authors.lastname: Jin
authors.affiliation: ‡High Magnetic Field Laboratory, Chinese Academy of Science, Shushanhu Road 350, Hefei 230031, Anhui, P. R. China.
authors.forename: M L
authors.initials: ML
authors.lastname: Tian
authors.affiliation: †Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Poggio
keywords: MnSi; Skyrmion; cantilever magnetometry; helimagnets; nanowire