Low-temperature saturation of 2D variable-range-hopping conductivity induced by the gate covering the mesa edge

Levin M.; Lu TC.; Shlimak I.; Ginodman V.; Resnick L.; Sandomirskii V. Friedland KJ.; Hey R.

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Low-temperature saturation of 2D variable-range-hopping conductivity induced by the gate covering the mesa edge

机译：覆盖台面边缘的栅极引起的二维变程跳变电导率的低温饱和

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The influence of the Schottky gate shape on the low temperature conductivity in gated Si-delta-doped GaAs was investigated. For samples with a gate covering the top and also the mesa edge of the structure, an unexpected low-temperature saturation of the variable-range-hopping conductivity (VRH) was observed at T < 1 K. We show that this effect is definitely connected with the gate covering the mesa edge. Sample resistivity in "saturation regime" increases with increasing negative gate voltage. Possible influence of a strong lateral electric field, induced by the gate covering the mesa edge, on the low temperature conductivity of depleted 2D layer is discussed. [References: 10]

机译：研究了肖特基栅极形状对栅Si-δ掺杂GaAs中低温电导率的影响。对于具有覆盖结构顶部和台面边缘的门的样品，在T <1 K时观察到了变程跳跃电导率（VRH）的意外低温饱和。大门覆盖台面边缘。 “饱和状态”下的样品电阻率随负栅极电压的增加而增加。讨论了由覆盖台面边缘的栅极引起的强横向电场对耗尽的2D层的低温电导率的可能影响。 [参考：10]

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《Physica status solidi, B. Basic research》 |2002年第1期|共4页
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Levin M.; Lu TC.; Shlimak I.; Ginodman V.; Resnick L.; Sandomirskii V. Friedland KJ.; Hey R.;
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中图分类固体物理学;
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1. Low-temperature saturation of 2D variable-range-hopping conductivity induced by the gate covering the mesa edge [J] . Levin M., Lu TC., Shlimak I., Physica status solidi, B. Basic research . 2002,第1期

机译：覆盖台面边缘的栅极引起的二维变程跳变电导率的低温饱和
2. Photoconductivity, low-temperature conductivity, and magnetoresistance studies on the layered semiconductor GaTe - art. no. 235321 [J] . Bose DN., Pal S. Physical Review, B. Condensed Matter . 2001,第23期

机译：层状半导体GaTe的光电导，低温电导率和磁阻研究-art.Art。没有。 235321
3. Low-temperature enhancement of the thermoelectric Seebeck coefficient in gated 2D semiconductor nanomembranes [J] . Kommini A., Aksamija Z. Journal of Computational Electronics . 2016,第1期

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Low-temperature saturation of 2D variable-range-hopping conductivity induced by the gate covering the mesa edge

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