The nobel prize in physics 2007: Giant magnetoresistance. an idiosyncratic survey of spintronics from 1963 to the present: Peter weinberger's contributions
Philosophical Magazine, ISSN: 1478-6435, Vol: 88, Issue: 18-20, Page: 2603-2613
2008
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Conference Paper Description
While the twentieth century was dominated by advances in controlling electrical currents through the charge of the electron, aka electronics, the rapid developments since 1988 have lead to a control of currents through the spin of the electron, i.e., spintronics. The groundwork for this field comes from studies on metallic alloys and multilayers started in the early 1960s. Due to parallel developments in the growth of semiconductor heterostructures, e.g., molecular beam epitaxy, work on metallic layers rapidly advanced in the late 1970s and early 1980s. By 1988 groups lead by Fert and Grunberg were able to grow metallic multilayers which displayed the sought after effect; a small magnetic field was able to dramatically change the electric resistance of the structures. This led to an immediate explosion in activity in this area; so much so that the materials which display this effect were incorporated in the read-heads of hard disk drives of computers by 1997. I will focus on developments in three distinct time periods. The first was from 1988 to 1995 which was dominated by metallic multilayers which displayed giant magnetoresistance (GMR), the second from 1995 to 2000 when reproducible magnetic tunnel junctions (MTJs) were studied for their tunnelling magnetoresistance (TMR), and the third period from 2000 to 2005 in which the ideas of Berger and Slonczewski were realized on the back action of currents on the magnetic background of the materials doing the conducting, i.e., current induced magnetization switching (CIMS). The contributions of Peter Weinberger to these developments illustrate the broad range of his activities in spintronics, this field which is barely twenty years old.
Bibliographic Details
Informa UK Limited
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