Two-dimensional electronic transport at the bare KTaO3 (100) single crystals by laser irradiation

C. C. Xiao, J. Z. Shen, S. L. Li, S. H. Wang, K. X. Jin

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摘要

The structure and electrical properties of KTaO3 (100) single crystals through the laser irradiation have been systematically investigated. The KTaO3 single crystals after irradiation exhibit the two-dimensional conductivity, which is confirmed by the anisotropic magnetoresistance. The Hall measurements show that carrier density and mobility can reach 1014 cm−2 and 110 cm2/ Vs at 20 K by laser irradiation, respectively. Analysis indicates that there is a transition region between amorphous layer and crystalline layer, where the electron transfer accounts for the metallic conductivity. This is the joint effect of the laser-induced oxygen defect and the surface destruction of lattice. Our results provide a novel way to study and fabricate all-oxide devices.

源语言英语
文章编号116256
期刊Scripta Materialia
252
DOI
出版状态已出版 - 1 11月 2024

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