New understanding of spin in 'silicon valleytronics' could greatly advance many future technologies

06/29/2015 - 00:00


Latest research from scientists from our Department of Physics into cutting-edge 'spin physics' could herald the arrival of a revolutionary new technology – 'valleytronics'.

Through a study, published in the journal Nature Communications, physicists at Bath with international collaborators examined how 'valley polarisarisation' in silicon transistors affects how electronic spin is polarised.

By using unique technology to polarise valleys (which describe an aspect of how an electrons' wavelength relates to its energy) in the steady state, they show, for the first time, that contrary to expectations, valley polarisation can make spin polarisation easier.

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Ref: Valley polarization assisted spin polarization in two dimensions. Nature Communications (2015) | DOI:10.1038/ncomms8230