Electronic transmission through a ferroelectric tunnel junction with a semiconducting electrode. The colors represent the transmission distribution in the two-dimensional Brillouin zone of the junction.

From the article:

Enhanced Tunneling Electroresistance in Ferroelectric Tunnel Junctions due to the Reversible Metallization of the Barrier
Xiaohui Liu, J. D. Burton, and Evgeny Y. Tsymbal
Phys. Rev. Lett. 116, 197602 (2016)

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