Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3.
Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3.
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DOI：
10.1002/advs.202306420
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发表时间：
2023-12
期刊：
影响因子：
15.1
通讯作者：
Alexe, Marin
中科院分区：
文献类型：
--
作者：
Soleimany, Mehrzad;Alexe, Marin
SrTiO 3是一种钙钛矿型氧化物，在氧化物电子学领域具有重要的应用潜力。值得注意的是，其在低温区的光电活性与量子顺电态重叠，表现出显着的特性。在这项研究中，它表明，当光激发上述带隙能量的光子，SrTiO 3表现出非线性传输的光生载流子和电压控制的负电阻，从谷间转移的光致电子。作为负电阻的结果，光电流变得不稳定，并自发地产生低频古恩振荡。SrTiO 3晶体表现出由以上带光子激发的光载流子的非线性传输，产生源于光致电子谷间转移的电压控制负电阻。作为负电阻的结果，光电流变得不稳定，并自发地产生低频古恩振荡。
SrTiO3, a perovskite oxide, holds significant potential for application in the field of oxide electronics. Notably, its photoelectric activity in the low temperature regime, which overlaps with the quantum paraelectric state, exhibits remarkable characteristics. In this study, it is demonstrated that when photo‐excited with above band gap energy photons, SrTiO3 exhibits non‐linear transport of photocarriers and voltage‐controlled negative resistance, resulting from an intervalley transfer of photo‐induced electrons. As a consequence of the negative resistance, the photocurrent becomes unstable and spontaneously gives rise to low frequency Gunn‐like oscillations. SrTiO3 crystals exhibit non‐linear transport of photo‐carriers excited with above band photons, generating a voltage‐controlled negative resistance stemming from an intervalley transfer of photo‐induced electrons. As a consequence of the negative resistance, the photocurrent becomes unstable and spontaneously gives rise to low frequency Gunn‐like oscillations.
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影响因子：
41.2
作者：
Kan, DS;Terashima, T;Takano, M
通讯作者：
Takano, M
影响因子：
3.4
作者：
Salverda, M.;Hamming-Green, R. P.;Noheda, B.
通讯作者：
Noheda, B.
DOI：
10.1103/physrevb.2.3170
发表时间：
1970-10-15
期刊：
PHYSICAL REVIEW B-SOLID STATE
影响因子：
--
作者：
Sroubek, Z.
通讯作者：
Sroubek, Z.
影响因子：
--
作者：
TUFTE, ON;CHAPMAN, PW
通讯作者：
CHAPMAN, PW
影响因子：
1.7
作者：
YASUNAGA, H
通讯作者：
YASUNAGA, H