Dynamics of electrically driven martensitic phase transitions in Fe nanoislands.
Dynamics of electrically driven martensitic phase transitions in Fe nanoislands.
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Fe 纳米岛中电驱动马氏体相变的动力学
DOI：
10.1103/physrevlett.111.167601
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发表时间：
2013
影响因子：
8.6
通讯作者：
W. Wulfhekel
中科院分区：
文献类型：
--
作者：
L. Gerhard;R.J.H. Wesselink;S. Ostanin;A. Ernst;W. Wulfhekel
磁电耦合由于具有利用电场写入磁性信息的潜力而引起了人们的兴趣。在Cu（111）上的铁岛模型体系中，电场可以诱导铁磁体心立方相与反铁磁面心立方相之间的马氏体相变。本文详细研究了扫描隧道显微镜结界在电场作用下的相变动力学和能量学。统计测量使我们能够揭示电场和晶体应变对两个竞争相的能量格局的影响。
Magnetoelectric coupling has attracted interest due to its potential to write magnetic information with electric fields. In the model system of Fe islands on Cu(111), electric fields can induce martensitic phase transitions between ferromagnetic body-centered cubic and antiferromagnetic face-centered cubic phases. Here, we present a detailed study of the dynamics and energetics of the phase transition in the electric field of the junction of a scanning tunneling microscope. Statistical measurements allow us to reveal the influence of both the electric field and the crystallographic strain on the energy landscape of the two competing phases.