@article{oai:repo.qst.go.jp:00084765,
 author = {Takaya, Mitsui and Seiji, Sakai and Songtian, Li and Tetsuro, Ueno and Tetsu, Watanuki and Kobayashi, Yasuhiro and Masuda, Ryo and Makoto, Seto and Akai, Hisazumi and Takaya, Mitsui and Seiji, Sakai and Songtian, Li and Tetsuro, Ueno and Tetsu, Watanuki and Makoto, Seto},
 journal = {Hyperfine Interactions},
 month = {Nov},
 note = {Surface magnetism of Fe (001) was investigated by the in situ iron-57 probe layer method with a synchrotron Mössbauer source. The observed layer-by-layer internal hyperfine field shows a marked reduction at the surface and an oscillatory behavior with increasing depth in the individual layers below the surface. The calculated layer-by-layer hyperfine interactions (hyperfine field, isomer shift, and quadrupole shift) were consistent with the experimental results. The results give direct evidence for the magnetic Friedel oscillations, penetrating several layers from the Fe (001) surface.},
 title = {Direct observation of magnetic Friedel oscillation at Fe(001) surface},
 volume = {242},
 year = {2021}
}