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Updated: Jun 9, 2025

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シリコンにおけるTセンター型の量子欠陥の計算による発見

Yihuang Xiong1, Jiongzhi Zheng1, Shay McBride1

  • 1Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States.

Journal of the American Chemical Society
|October 28, 2024
PubMed
まとめ

研究者達は,高度な量子技術のために,新しいシリコン量子欠陥を発見しました. グループIIIの元素と炭素を組み合わせたこれらの新しい欠陥は,単光子発射とスピン光子インターフェースの性能を改善し,量子コンピューティングと通信を進める.

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The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
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Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
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Types of Semiconductors

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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