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arXiv · 2002.10489

Emergence of Competing Stripe Phase near the Mott Transition in Ti-doped Bilayer Calcium Ruthenates

Ashish Gangshettiwar·Yanglin Zhu·Zhanzhi Jiang·Jin Peng·Yu Wang·Jiaming He·Jianshi Zhou·Zhiqiang Mao·Keji Lai
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Abstract

We report the nanoscale imaging of Ti-doped bilayer calcium ruthenates during the Mott metal-insulator transition by microwave impedance microscopy. Different from a typical first-order phase transition where coexistence of the two terminal phases takes place, a new metallic stripe phase oriented along the in-plane crystalline axes emerges inside both the G-type antiferromagnetic insulating state and paramagnetic metallic state. The effect of this electronic state can be observed in macroscopic measurements, allowing us to construct a phase diagram that takes into account the energetically competing phases. Our work provides a model approach to correlate the macroscopic properties and mesoscopic phase separation in complex oxide materials.

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Ashish Gangshettiwar, Yanglin Zhu, Zhanzhi Jiang, Jin Peng, Yu Wang, Jiaming He, Jianshi Zhou, Zhiqiang Mao, Keji Lai. 2020-02-24. Emergence of Competing Stripe Phase near the Mott Transition in Ti-doped Bilayer Calcium Ruthenates. https://doi.org/10.1103/physrevb.101.201106

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