Discrete change of spin-density-wave modulation in Cr(100)/Sn multilayers as a function of Cr layer thickness.
Magnetic structures of epitaxial Cr(001)/Sn multilayers, where monatomic Sn layers are periodically embedded in a Cr(001) film, were studied using neutron diffraction and Mössbauer spectroscopy. It was found that spin-density-wave (SDW) antiferromagnetic structures with the modulation along the perpendicular direction to the film plane are stabilized at low temperatures. The wavelength of the SDW discretely changes as a function of the superlattice period. The enhanced magnetic moments of Cr at the Cr/Sn interfaces are thought to pin the antimode of the SDW modulation at the interface, resulting in the SDW with the modulation harmonic to the superlattice period.
Mibu
K
K
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. mibu@scl.kyoto-u.ac.jp
Takeda
M
M
Suzuki
J
J
Nakanishi
A
A
Kobayashi
T
T
Endoh
Y
Y
Shinjo
T
T