title: Real-Space Observation of Short-Period Cubic Lattice of Skyrmions in MnGe.
abstract: Three-dimensional forms of skyrmion aggregate, such as a cubic lattice of skyrmions, are anticipated to exist, yet their direct observations remain elusive. Here, we report real-space observations of spin configurations of the skyrmion-antiskyrmion cubic-lattice in MnGe with a very short period (∼3 nm) and hence endowed with the largest skyrmion number density. The skyrmion lattices parallel to the {100} atomic lattices are directly observed using high-resolution Lorentz transmission electron microscopes, simultaneously with underlying atomic-lattice fringes.
authors.affiliation: †RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.|‡Research and Development Group, Hitachi, Ltd., Hatoyama 350-0395, Japan.
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Tanigaki
authors.affiliation: §Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: Kiyou
authors.initials: K
authors.lastname: Shibata
authors.affiliation: §Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: Naoya
authors.initials: N
authors.lastname: Kanazawa
authors.affiliation: †RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
authors.forename: Xiuzhen
authors.initials: X
authors.lastname: Yu
authors.affiliation: ∥Department of Basic Science, University of Tokyo, Tokyo 153-8902, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Onose
authors.affiliation: †RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.
authors.forename: Hyun Soon
authors.initials: HS
authors.lastname: Park
authors.affiliation: †RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.|⊥Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Shindo
authors.affiliation: †RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.|§Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tokura
keywords: Lorentz microscopy; Skyrmion; short-period; three-dimensional structure