Magnetic Nanoswitch for Thermoelectric Voltages

Due to a recently discovered effect in magnetic tunnel structures, thermoelectric voltages in nano-electronic junctions can be controlled.

The heat which occurs in tiny computer processors might soon be no longer useless or even a problem. On the contrary: It could be used to switch these processors more easily or to store data more efficiently! These are two of the several potential applications made possible by a discovery made at the Physikalisch-Technische Bundesanstalt (PTB). This so-called "thermoelectronic voltage" may well be very interesting - mainly for the use of nano-junctions, i.e. small components based on magnetic tunnel structures. The results obtained by the researchers have been published in the current issue of the renowned specialised journal Physical Review Letters.  ( http://prl.aps.org/abstract/PRL/v107/i17/e177201) 
Read more here... http://www.ptb.de/en/aktuelles/archiv/presseinfos/pi2011/pitext/pi111024.html