Direct Imaging of Dynamic Glassy Behavior in a Strained Manganite Film.

Direct Imaging of Dynamic Glassy Behavior in a Strained Manganite Film.
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应变锰酸盐薄膜中动态玻璃态行为的直接成像。

DOI:
10.1103/physrevlett.116.019904
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发表时间:
2013-06
影响因子:
8.6
通讯作者:
Shen Z. X.
Shen Z. X.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Kundhikanjana W.;Sheng Z. G.;Yang Y. L.;Lai K. J.;Ma Y.;Cui Y. T.;Kelly M. A.;Nakamura M.;Kawasaki M.;Tokura Y.;Tang Q. C.;Zhang K.;Li X. X.;Shen Z. X.

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钙钛矿锰氧化物中复杂的多体相互作用导致铁磁性金属相和电荷有序相之间的激烈竞争,这些相具有纳米级的电子不均匀和玻璃化行为。研究这种玻璃态需要具有足够灵敏度和稳定性的高分辨率成像技术。在这里,我们提出了一个近场微波显微镜成像的应变驱动的玻璃态锰氧化物薄膜的结果。两个电不同相之间的高对比度允许直接观察相分离。在不同的热历史条件下,冷却过程中的低温微观构型不同。在足够高的温度下,我们观察到两个相之间在两个方向上的转换。然而,动态切换在玻璃化转变温度以下停止。与磁化数据相比,相分离在微观上被冻结,而自旋弛豫在短时间内被发现。
Complex many-body interaction in perovskite manganites gives rise to a strong competition between ferromagnetic metallic and charge-ordered phases with nanoscale electronic inhomogeneity and glassy behaviors. Investigating this glassy state requires high-resolution imaging techniques with sufficient sensitivity and stability. Here, we present the results of a near-field microwave microscope imaging on the strain-driven glassy state in a manganite film. The high contrast between the two electrically distinct phases allows direct visualization of the phase separation. The low-temperature microscopic configurations differ upon cooling with different thermal histories. At sufficiently high temperatures, we observe switching between the two phases in either direction. The dynamic switching, however, stops below the glass transition temperature. Compared with the magnetization data, the phase separation was microscopically frozen, while spin relaxation was found in a short period of time.
物理学杂志
DOI: --
发表时间: 2010
期刊: Conference Series 240
影响因子: --
作者:
R.Ueji;Y.Okitsu;T.Nakamura;Y.Takagiand Y.Tanaka
通讯作者: Y.Takagiand Y.Tanaka
DOI: --
发表时间: 2003
期刊: --
影响因子: --
作者:
E. Dagotto;G. Alvarez
通讯作者: E. Dagotto;G. Alvarez