最佳和欠掺杂YBa2Cu3O7-δ的太赫兹光电性

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI:10.1109/IRMMW-THZ.2018.8510113

A. Galeeva, A. Parafin, D. Masterov, S. A. Pavlov, A. Pankratov, S. Danilov, L. Ryabova, D. Khokhlov

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引用次数: 0

摘要

我们研究了高tc超导体YBa2Cu3O7-δ在临界温度附近的最佳掺杂和欠掺杂薄膜在强激光太赫兹脉冲作用下的光电性。在最佳掺杂的薄膜中，观察到负光电导率随延迟信号的增加和衰减。在欠掺杂薄膜中，在高于转变温度的温度下，在负光电导率背景之上检测到快速的正光响应。讨论了造成所观察到的效应的可能机制。

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Terahertz Photoconductivity in Optimally and Underdoped YBa2Cu3O7-δ

We have studied photoconductivity under the action of strong laser terahertz pulses in optimally doped and underdoped films of the high-Tcsuperconductor YBa2Cu3O7-δin the vicinity of the critical temperature. In the optimally doped film, the negative photoconductivity with delayed signal increment and decay has been observed. In the underdoped film, a fast positive photoresponse has been detected on top of the negative photoconductivity background at temperatures above the transition temperature. Possible mechanisms responsible for the effects observed are discussed.

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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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