Clocking magnetic field-coupled devices by domain walls

We study the interaction between propagating domain walls in permalloy nanowires and nanomagnetic dots made of Co/Pt multilayers. The magnetic behavior of dots placed above/below the domain wall conductor is strongly influenced by the field of the wall. Using micromagnetic simulations we show that the field generated by the domain wall can switch the coupled dots to their magnetically ordered ground state. This effect can be exploited for clocking magnetic field-coupled devices and possibly substitute electrical clocking structures.

[1]  B. Diény,et al.  Creep and flow regimes of magnetic domain-wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy. , 2007, Physical review letters.

[2]  C. You.  Confined magnetic stray field from a narrow domain wall , 2006 .

[3]  L. Lagae,et al.  Suppression of complex domain wall behavior in Ni80Fe20 nanowires by oscillating magnetic fields , 2010 .

[4]  S. Parkin,et al.  Magnetic Domain-Wall Racetrack Memory , 2008, Science.

[5]  R. Cowburn,et al.  Room temperature magnetic quantum cellular automata , 2000, Science.

[6]  Bennett clocking of nanomagnetic logic using electrically induced rotation of magnetization in multiferroic single-domain nanomagnets , 2010, 1005.5358.

[7]  G. Bersuker,et al.  On the impact of high-κ gate stacks on mobility: A Monte Carlo study including coupled SO phonon-plasmon scattering , 2007 .

[8]  M. Donahue,et al.  Head To Head Domain Wall Structures In Thin Magnetic Stripes , 1997, 1997 IEEE International Magnetics Conference (INTERMAG'97).

[9]  E. R. Lewis,et al.  Measuring domain wall fidelity lengths using a chirality filter. , 2009, Physical review letters.

[10]  T. Mikolajick,et al.  Experimental study of domain wall motion in long nanostrips under the influence of a transverse field , 2008 .

[11]  Mohmmad T. Alam,et al.  On-Chip Clocking for Nanomagnet Logic Devices , 2010, IEEE Transactions on Nanotechnology.

[12]  D. Schmitt-Landsiedel,et al.  Magnetic Ordering of Focused-Ion-Beam Structured Cobalt-Platinum Dots for Field-Coupled Computing , 2008, IEEE Transactions on Nanotechnology.

[13]  A Imre,et al.  Majority Logic Gate for Magnetic Quantum-Dot Cellular Automata , 2006, Science.