Invited Talk (Physics)

Modern spintronic based on thin magnetic wires

doc. RNDr. Rastislav Varga, PhD. Institute of Physics,
PF UPJŠ, Košice, Slovakia


Spintronics is a new branch of applied physics, using magnetic moment of electrons for transfer and processing of information. The importance of spintronics was emphasized by awarding the Nobel prize in Physics, for the so-called Giant Magneto-Resistance effect (GMR), used nowadays in read/write heads of all hard disk drives. By the use of spintronics, it is possible to construct modern computer data storages, based on GMR phenomenon (magnetic RAM-MRAM), with capacity exceeding the capacity of a hard disk and with speed above the speed of a classical random access memory. Some modern spintronic devices use the shift of domain walls in thin magnetic wires for storing (IBM race track memory [1]) and processing of binary information (logic based on domain walls [2]).

  • [1] S. S. Parkin, M. Hayashi, L. Thomas, Science 320 (2005) 190
  • [2] D.A.Allwood, G. Xiong, C.C. Faulkner, D. Atkinson, D. Petit, R.P. Cowburn Science 309 (2005) 1688