Experimental Realization of a Topological p-n Junction by Intrinsic Defect Grading.

Bathon, Thomas; Achilli, Simona; Sessi, Paolo; Golyashov, Vladimir Andreevich; Kokh, Konstantin Aleksandrovich; Tereshchenko, Oleg Evgenievich; Bode, Matthias · Adv Mater · 2016

basic_science · Level V

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Abstract

A Bi2Te3 single crystal is grown with the modified Bridgman technique. The crystal has a nominal composition with a Te content of 61 mol% resulting in the existence of two distinct regions, p- and n-doped, respectively; color-coded tunneling spectra are taken over 60 nm at the transition region.