Documents Spin texture with a topological number Skyrmion is supposed to be topologically stable;...

Slide 1 Slide 2 Slide 3 Spin texture with a topological number Slide 4 Skyrmion is supposed to be topologically stable; Experimentally, it is not stable! Critical re-examination…

Documents Why is AFM challenging? 1.Jump to contact: k>max(- V TS / z (static) kA>max(-F TS oscillating.....

Why is AFM challenging? Jump to contact: k>max(-¶2VTS/¶z2) (static) kA>max(-FTS) (oscillating mode) [ideal amplitude is A~l] 2. Non-monotonic imaging signal 3. Long-range…