Persistent and reversible all-optical phase control in a manganite thin film
Persistent and reversible all-optical phase control in a manganite thin film
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DOI：
10.1103/physrevlett.95.017404
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发表时间：
2005-07-01
影响因子：
8.6
通讯作者：
Miyano, K
中科院分区：
文献类型：
--
作者：
Takubo, N;Ogimoto, Y;Miyano, K
通过仔细选择多临界点附近的 Pr1-x(Ca1-ySry)(x)MnO3 成分，在锰氧化物薄膜中实现了持久且可逆的光学相位控制。脉冲激光将较低温度的金属相从较高温度的电荷有序绝缘体中分离出来，而连续波光则通过加热来逆转这种效应。我们清楚地证明了光、加热和激发在电荷间隙中所发挥的两种相互竞争的作用，这对于电子关联物理学的应用和理解都很重要。
Persistent and reversible optical phase control has been achieved in a manganite thin film through a careful choice of the composition of Pr1-x(Ca1-ySry)(x)MnO3 near a multicritical point. Pulsed laser light brings the lower temperature metallic phase out of the higher temperature charge-ordered insulator, while a cw light reverses the effect by heating. We clearly demonstrate the two competing roles played by light, heating, and excitation across the charge gap, which are important in both the application and the understanding of the physics of electron correlation.