Polaron coherence condensation as the mechanism for colossal magnetoresistance in layered manganites
Physical Review B2007Vol. 76(23)
Citations Over TimeTop 10% of 2007 papers
N. Mannella, Wanli Yang, Kiyohisa Tanaka, X. J. Zhou, Hong Zheng, J. F. Mitchell, Jan Zaanen, Thomas Devereaux, Naoto Nagaosa, Z. Hussain, Zhi‐Xun Shen
Abstract
Angle-resolved photoemission spectroscopy data for the bilayer manganite ${\mathrm{La}}_{1.2}{\mathrm{Sr}}_{1.8}{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}$ show that, upon lowering the temperature below the Curie point, a coherent polaronic metallic ground state emerges very rapidly with well-defined quasiparticles which track remarkably well the electrical conductivity, consistent with macroscopic transport properties. Our data suggest that the mechanism leading to the insulator-to-metal transition in ${\mathrm{La}}_{1.2}{\mathrm{Sr}}_{1.8}{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}$ can be regarded as a polaron coherence condensation process acting in concert with the double exchange interaction.
Related Papers
- → Origin of colossal magnetoresistance in LaMnO 3 manganite(2015)94 cited
- → Colossal enhancement of magnetoresistance in La 0.67 Sr 0.33 MnO 3 /Pr 0.67 Ca 0.33 MnO 3 multilayers: Reproducing the phase separation scenario(2008)13 cited
- → Enhancement of ferromagnetism in the colossal-magnetoresistance layered manganite La1.2Ba1.8Mn2−xRuxO7 (x = 0, 0.1, 0.5, and 1)(2004)3 cited
- → Controlled temperature broadening of colossal magnetoresistance in a manganite heterostructure(1997)3 cited
- Temperature dependent evolution of the electronic and local atomic structure in the cubic colossal magnetoresistive manganite La1-xSrxMnO3(2008)