Hofstadters Butterfly finally observed

May 17, 2013 4 Replies

More physics than electronics but an interesting use of graphene.



Hofstadter's butterfly ? a stunning fractal pattern that describes the behaviour of electrons in a magnetic field ? has been measured experimentally for the first time.



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Devious trick using Moire fringes between two different lattice structures to get a periodic pattern on the right scale.



Theoretical prediction is finally validated. Very pretty too.


Regards, Martin Brown

y-spotted-in-graphene

Andre Geim has always had an eye for the visually stunning illustration. Hi s floating frog also got a lot of column inches, though the physics there w ere less exciting.

Bill Sloman, Sydney

Pre-print paper here, I believe:

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Jon

"Martin Brown"

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** Wow, Penny is gonna be really impressed !!.

But Sheldon will sneer.

.... Phil

I watched the video about cleaving carbon down to graphene.

They said that graphene transistors can operate at 100 to 150 GHz now.

How fast are silicon transistors now?

Will these graphene transistors really revolutionize computer technology?

Or will IBM own the patents and sit on them?

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