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Our work on the cover of Superconductor Science and Technology

Superconductor Science and Technology magazine, a leading peer-reviewed journal in the field of superconductivity,  will devote a special issue to ferromagnet/superconductor nanohybrids. Our work done in collaboration with Prof. Milorad Milosevic and Prof. Francois Peeters (both former visitors of the Institute for Theoretical Sciences at ND/ANL and colleagues from Belgium) will be featured on the cover of the special issue  and as a first article in this volume. These images and animations are the result of  large scale numerical calculations that  show how the morphology of the superconducting vortex matter changes as the state of a nanoscale ferromagnet is modified.

The link to the entire issue is given below:


whereas the link to our full article is here


ICEAA 2010 Syndey, Australia: Ferromagnetic vortex in nanomagnets used to kill cancer cells

This year’s International Conference on Electromagnetics and Advanced Applications (ICEAA) was held a few weeks ago in Sydney, Australia. 2010 was the tenth anniversary for this well-established conference series which features an interesting mix of scientists and engineers working a wide range of topics, from fundamental issues in nanoscale magnetism all the way to the latest radar and stealth technology such as cloaking. Surprisingly, Harry Potter is not the only one working on this . Apparently, at least in one color,  metamaterials (with negative index of refraction) can deflect light around objects and make them invisible.

I gave my invited talk during one of the first sessions, dedicated to Nano-magnetism and Magnetic Materials. One of the most exciting new results discussed there was the recent result of Valentyn Novosad his his collaborators a Argonne National Lab. Val and his colleagues used functionalized  submicron permalloy discs in the so-called ferromagnetic vortex state (a needle-like magnetization state in a pancake shaped nanoscale metallic particle) and a low frequency external magnetic field to induce programmed cell death in cancer cells! Their paper appeared recently in Nature Materials.  While we have used the ferromagnetic vortex state to propose novel spintronics application, and others have used these topologica singularities for a variety of applications, this recent use of the FM vortex state to kill cancer cells  is the most spectacular  so far. Will get Valentyn to visit us and give a Condensed Matter Seminar on this soon.