Imaging spin dynamics in monolayer WS 2 by time-resolved Kerr rotation microscopy

Spin-orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy

Magnetic skyrmions are topologically protected spin textures with attractive properties suitable for high-density and low-power spintronic device applications. Much effort has been dedicated to understanding the dynamical behaviours of the magnetic skyrmions. However, experimental observation of the ultrafast dynamics of this chiral magnetic texture in real space, which is the hallmark of its q...

Magnetic relaxation of exchange biased (Pt/Co) multilayers studied by time-resolved Kerr microscopy

Kerr rotation in Cu, Ag, and Au driven by spin accumulation and spin-orbit coupling

We measure transient spin accumulation in Cu, Ag, and Au by time-resolved magneto-optical Kerr effect. The transient spin current is generated by ultrafast demagnetization of a ferromagnetic [Co/Pt] layer, and spin accumulates in an adjacent normal metal, Cu, Ag, or Au by spin diffusion. The magnitude of the Kerr rotation is described by an off-diagonal conductivity tensor that is proportional ...

Time-resolved x-ray imaging of magnetization dynamics in spin-transfer torque devices

V. Chembrolu,1,2 J. P. Strachan,1,2 X. W. Yu,1,2 A. A. Tulapurkar,2 T. Tyliszczak,3 J. A. Katine,4 M. J. Carey,4 J. Stöhr,2,5 and Y. Acremann2,6 1Department of Applied Physics, Stanford University, Stanford, California 94305, USA 2SIMES Institute, Stanford Linear Accelerator Center, Menlo Park, California 94025, USA 3Advanced Light Source, Berkeley, California 94720, USA 4Hitachi Global Storage...

Benchtop time-resolved magneto-optical Kerr magnetometer.

We present here the construction and application of a compact benchtop time-resolved Kerr magnetometer to measure the magnetization precession in magnetic thin films and lithographically patterned elements. As opposed to very expensive femtosecond lasers this system is built upon a picosecond pulsed injection diode laser and electronic pulse and delay generators. The precession is triggered by ...