Direct Observation of Cycloidal Spin Modulation and Field-induced Transition in Néel-type Skyrmion-hosting VOSe2O5

  title={Direct Observation of Cycloidal Spin Modulation and Field-induced Transition in N{\'e}el-type Skyrmion-hosting VOSe2O5},
  author={Takashi Kurumaji and Taro Nakajima and Artem Feoktystov and Earl Babcock and Zahir Salhi and Victor Ukleev and Taka-hisa Arima and Kazuhisa Kakurai and Yoshinori Tokura},
  journal={arXiv: Strongly Correlated Electrons},
We investigate the spin rotational structure of magnetic skyrmions in a tetragonal polar magnet VOSe$_2$O$_5$ via polarized small-angle neutron scattering (SANS). Spin polarization analysis of the scattered neutrons reveals the cycloidal spin modulation in all the incommensurate phases at zero and non-zero magnetic field along the $c$ axis, providing unambiguous evidence for Neel-type skyrmions in this system. In the vicinity of the triangular skyrmion-lattice phase, extensive SANS measurements… 

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