Anisotropic electronic structure in single crystalline orthorhombic TbMnO3 thin films

作者：Wu K H^*; Gou I C; Luo C W; Uen T M; Lin J Y; Juang J Y; Chen C K; Lee J M; Chen J M

来源：Thin Solid Films, 2010, 518(8): 2275-2279.

DOI：10.1016/j.tsf.2009.09.089

• TbMnO3 thin films
• X-ray absorption spectroscopy
• Electronic structure
• Magnetoelectric effect

We have deposited the c-axis-oriented orthorhombic TbMnO3 (o-TMO) films with well-aligned in-plane orientations on NdGaO3 (001) substrates by using pulsed laser deposition. The distinctive orientation alignments between the film and substrate allow the study of the X-ray absorption spectroscopy (XAS) with the electric field along three major crystallographic directions, respectively. Polarization-dependent XAS spectra show significant anisotropy in the electronic Structure of o-TMO. The correlation between the electronic structure, the bonding anisotropy, and the magnetoelectric effect in the multiferroic materials is revealed.

• 出版日期2010-2-1