Spin, Orbital, and Spin-Orbital Polarons in Transition Metal Oxides
Wohlfeld, Krzysztof
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I give a brief overview of a polaron formation in three distinct transition metal oxides: (i) spin polaron when a hole is added to the antiferromagnetic (AF) ordered plane in La₂CuO₄, (ii) orbital polaron when a hole is added to the alternating orbital (AO) ordered plane in LaMnO₃, and (iii) spin-orbital polaron when a hole is added to the AF and AO ordered plane in LaVO₃. Comparison of the distinct features of the above polarons can shed some light on the basic differences between the experimental phase diagrams of the lightly doped transition metal oxides La₂₋ₓSrₓCuO₄, La₁₋ₓSrₓMnO₃, and La₁₋ₓSrₓVO₃.
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