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Intense attosecond magnetic field pulses are predicted to be produced byintense few cycle circularly polarized UV pulses. Numerical solutions of thetime dependent Schr\"{o}dinger equation for H$_2^+$ are used to study thedynamical process. Spiralling attosecond circular electron wave packets arecreated with nanometer molecular dimensions, thus generating magnetic fields ofseveral tens of Teslas ($10^5$ Gauss). Simulations show that the inducedmagnetic field is critically dependent on the pulse wavelength $\lambda$ andpulse duration $n\tau$ ($n$ number of cycle) as predicted by a classical model.For ultrashort few cycle circularly polarized attosecond pulses, molecularorientation influences the generation of the induced magnetic fields as aresult of preferential ionization perpendicular to the molecular axis.

Attosecond Magnetic Field Pulse Generation by Intense Few Cycle Circularly Polarized UV Pulses