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在上直接生长的超薄膜中增强的铁电性

Suraj S Cheema1, Daewoong Kwon2,3, Nirmaan Shanker4,2

  • 1Department of Materials Science and Engineering, University of California, Berkeley, CA, USA. s.cheema@berkeley.edu.

Nature
|April 24, 2020
PubMed
概括

超薄的铁电材料,如氧化物,保持可切换的极化到1nm. 这一发现挑战了铁电的临界厚度限制,为先进的低功耗电子铺平了道路.

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Types of Semiconductors01:20

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Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
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