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10.09.07

Giant Magnetoresistance Recognized

Clifford Johnson by Clifford Johnson     Department: Physics & Chemistry

Magnetoresistance has nothing to do with the Brotherhood of Evil Mutants or its charismatic leader. It's to do with your ipod, your laptop, and pretty much any device that uses hard drives to store a ton of vital information (you know, those valuable pictures of you at that party the other night) in a small place. Magnetoresistance is a material's ability to change its electrical resistance in response to an applied magnetic field.

Today's announcement of the Nobel Prize in Physics recognized Giant Magnetoresistance (the really strong version of the effect) and its two discoverers Albert Fert (Unité Mixte de Physique CNRS/THALES, Université Paris-Sud, Orsay, France) and Peter Grünberg (Forschungszentrum Jülich, Germany). More on this at the Nobel Prize  site, and there's a great conversation about it with Richard Harris on NPR this morning (click here, and find links to audio too). (See also my earlier post about the other 2007 Nobel Prizes.)

So think a little bit about physics when you use your clever, cool devices today... or maybe every day!

-cvj

Tags: nobel prize physics

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So what you're telling me cvj is... physics is relevant to my day to day life?

I suspected it all along ;)

Well, at least when you're using ipods and laptops..!

-cvj

October 14, 2007 2:15 PM

Harry Abernathy

Clifford,
Thank you for calling attention to a Nobel prize besides the peace price. People tend to forget about the other awards, which, in my opinion, are awarded to people much more deserving. That's because they're usually awarded to people who have spent a lifetime dedicated to their work. Also, the awards are usually bestowed years after their initial achievements, allowing for history to more adequately judge the effects of their work.

Also, let's not forget Gerhard Ertl, one of the fathers of surface chemistry, for his winning of the Nobel prize in chemistry. Most of my research involves surface analysis, so I'm a little biased, but he does have a good connection with physics. He has used techniques such as LEEDS (low energy election diffraction spectroscopy), UPS (ultraviolet photoemission spectroscopy), and STM (scanning tunneling microscopy) to study reactions occuring on the surfaces of materials. All of these techniques owe their invention to a healthy dose of physics. In fact, Binnig and Rohrer won the 1986 Nobel Prize in physics for inventing STM.

Hi,

I certainly have not forgotten them. I've spoken about each one in turn on Asymptotia. Have a look!

I highlighted the physics on here too because of the obvious connection to lots of the gadgetry that WIRED readers like to hear about.... Nice to see the physics underlying the technology get some attention.

Thanks for your thoughts!

-cvj

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