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Hofstadters Butterfly finally observed

Discussion in 'Electronic Design' started by Martin Brown, May 17, 2013.

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  1. Martin Brown

    Martin Brown Guest

    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.

    http://physicsworld.com/cws/article/news/2013/may/15/hofstadters-butterfly-spotted-in-graphene

    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.
     
  2. Bill Sloman

    Bill Sloman Guest

    Andre Geim has always had an eye for the visually stunning illustration. His floating frog also got a lot of column inches, though the physics there were less exciting.
     
  3. Jon Kirwan

    Jon Kirwan Guest

    Pre-print paper here, I believe:

    http://arxiv.org/ftp/arxiv/papers/1303/1303.6942.pdf

    Jon
     
  4. Phil Allison

    Phil Allison Guest

    "Martin Brown"

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

    But Sheldon will sneer.



    ..... Phil
     
  5. Greegor

    Greegor Guest

    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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