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Filling Control of the Mott Insulator Ca2RuO4

Hideto Fukazawa·Yoshiteru Maeno
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Abstract

We have grown single crystals of electron doping system Ca2-xLaxRuO4 (0.00 <= x <= 0.20) by a floating zone method. The first order metal/non-metal transition and canted antiferromagnetic ordering occur for 0.00 < x < 0.15, similar to those in the bandwidth controlled system Ca2-xSrxRuO4 (CSRO). However, comparing with CSRO, we found a rather different metallic ground state adjacent to the non-metallic ground state with canted antiferromagnetic order. Instead of short-range antiferromagnetic correlation found in CSRO (0.20 <= x < 0.50), the metallic ground state of the present system is characterized by strong ferromagnetic correlation.

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Hideto Fukazawa, Yoshiteru Maeno. 2000-08-23. Filling Control of the Mott Insulator Ca2RuO4. https://doi.org/10.1143/jpsj.70.460

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