Emergence of a 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

Research output: Contribution to journalArticle

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 the 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.

Original languageEnglish (US)
Article number201106
JournalPhysical Review B
Volume101
Issue number20
DOIs
StatePublished - May 15 2020

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Gangshettiwar, A., Zhu, Y., Jiang, Z., Peng, J., Wang, Y., He, J., Zhou, J., Mao, Z., & Lai, K. (2020). Emergence of a competing stripe phase near the Mott transition in Ti-doped bilayer calcium ruthenates. Physical Review B, 101(20), [201106]. https://doi.org/10.1103/PhysRevB.101.201106