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New Paper Published in Nature Physics!

May 7th, 2015

Our latest work, “Enhanced electron coherence in atomically thin Nb3SiTe6“, has been published in Nature Physics!

NatPhys

The effect of phonon dimensionality on electron-phonon interaction has been predicted for long time. However, the experimental efforts results in controversial conclusions. Such confliction may caused by the fact that the previous investigations are all preformed on polycrystalline materials, in which the grain boundary scattering may affect the electron-phonon interaction. In this work, through the magnetoresistance measurements on single crystalline nano flakes, we show that the electron-phonon interaction can be modified by phonon dimensionality. Our work provide strong evidence for the long-predictions and highlight the importance to use single crystalline material to investigate the low dimensional physics.

show that the e–ph interaction is, indeed, modified by a
phonon dimensionality crossover in layered Nb3SiTe6 atomic
crystals. When the thickness of the Nb3SiTe6 crystals is
reduced below a few unit cells, we observe an unexpected
enhancement of the weak-antilocalization signature in magnetotransport.
This finding strongly supports the theoretically
predicted suppression of e–ph interactions caused by quantum
confinement of phonons.
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