Lattice and electronic band structure changes across the surface ferroelectric transition
Lattice and electronic band structure changes across the surface ferroelectric transition
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DOI：
10.1016/s0375-9601(98)00739-7
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发表时间：
1998-12-14
影响因子：
2.6
通讯作者：
Yudin, SG
中科院分区：
文献类型：
--
作者：
Choi, J;Dowben, PA;Yudin, SG
探讨了偏氟乙烯(70%)/三氟乙烯(30%)结晶共聚物薄膜表面铁电相变的原因。我们报道了通过表面铁电相变的导带色散中表面布里渊区的单轴倍增。电子结构随温度的变化主要发生在导带，并伴随着表面偶极子的重新取向。(C)1998年爱思唯尔科学公司。
The origin of the surface ferroelectric phase transition in crystalline copolymer films of vinylidene fluoride (70%) with trifluoroethylene (30%) is explored. We report a uniaxial doubling of the surface Brillouin zone in the conduction band dispersion across the surface ferroelectric phase transition. The temperature dependent changes in the electronic structure occur primarily in the conduction band and are accompanied by a surface dipole reorientation. (C) 1998 Elsevier Science B.V.