[18p-D519-1~15] 6.5 Surface Physics, Vacuum

[18p-D519-10] Detection of 4f electron spins in Dy(Ru_1-xCo_x)₂Si₂ for direct verification of RSB

〇Kohsuke Soda¹, Shu Kurokawa¹, Yoshikazu Tabata¹ (1.Kyoto Univ.)

Keywords:scanning tunneling microscopy, spin-glass

It is believed that the spin glass phase in magnetic materials is in the RSB (replica symmetry breaking) state. However, the RSB state has not been confirmed in real spin glass materials. In order to directly verify the RSB state, we attempted spin-polarized STM (scanning tunneling microscopy) observation of the Dy(Ru_1-xCo_x)₂Si₂ system. In this presentation, we report the details of the detection of 4f electron spins of Dy atoms that are responsible for the magnetism of this material, as the first step for direct verification of RSB.