Research data for "Transverse field muon-spin rotation measurement of the topological anomaly in a thin film of MnSi"

We present the results of transverse-field muon-spin rotation measurements on an epitaxially grown 40 nm thick film of MnSi on Si(111) in the region of the field-temperature phase diagram where a skyrmion phase
has been observed in the bulk. We identify changes in the quasistatic magnetic field distribution sampled by the
muon, along with evidence for magnetic transitions around T ≈ 40 and 30 K. Our results suggest that the cone phase is not the only magnetic texture realized in film samples for out-of-plane fields.

我们报道了在Si(111)衬底上外延生长的40 nm厚MnSi薄膜的横向场μ子自旋旋转（transverse-field muon-spin rotation）测量结果，实验覆盖了体材料中已观测到斯格明子相（skyrmion phase）的场温相图区域。我们识别出μ子所采样的准静态磁场分布的变化，同时找到了在温度约40 K与30 K附近存在磁相变的证据。本研究结果表明，当施加面外磁场时，锥状磁相（cone phase）并非薄膜样品中唯一存在的磁织构。