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26 April 2024

» arxiv » cond-mat/0606094

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In-plane anisotropy of the electronic structure for the charge/orbital-ordered state in half-doped manganite with layered structure
Y.S. Lee ; S. Onoda ; T. Arima ; Y. Tokunaga ; J.P. He ; Y. Kaneko ; N. Nagaosa ; Y. Tokura ;
Date:	5 Jun 2006
Subject:	Strongly Correlated Electrons
Abstract:	We report on the in-plane anisotropy of the electronic response in the spin/charge/orbital ordered phase of a half-doped layered-structure manganite. The optical conductivity spectra for a single domain of Eu$_{1/2}$% Ca$_{3/2}$MnO$_{4}$ unambiguously show the anisotropic charge dynamics which well corresponds to the theoretical calculation: the optical conductivity with the polarization along the zigzag ferromagnetic chain direction exhibits a smaller gap and a larger intensity at lower energies than that of the perpendicular polarization mostly due to the charge/orbital ordering and the associated quantum interference effect.
Source:	arXiv, cond-mat/0606094
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