Structural and metal-insulator transitions in ionic liquid-gated Ca3Ru2O7 surface

Conor P. Puls, Xinxin Cai, Yuhe Zhang, Jin Peng, Zhiqiang Mao, Ying Liu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report the fabrication and measurements of ionic liquid gated Hall bar devices prepared on the ab face of a thin Ca3Ru207 flake exfoliated from bulk single crystals that were grown by a floating zone method. The devices were categorized into two types: Those with their electrical transport properties dominated by r-axis transport in type A or that of the in-plane in type B devices. Bulk physical phenomena, including a magnetic transition near 56 K, a structural and metal-insulator transition at a slightly lower temperature, as well as the emergence of a highly unusual metallic state as the temperature is further lowered, were found in both types of devices. However, the Shubnikov-de Haas oscillations were found in type A but not type B devices, most likely due to enhanced disorder on the flake surface. Finally, the ionic liquid gating of a type B device revealed a shift in critical temperature of the structural and metal-insulator transition, suggesting that this transition is tunable by the electric field effect.

Original languageEnglish (US)
Article number253503
JournalApplied Physics Letters
Volume104
Issue number25
DOIs
StatePublished - Jun 23 2014

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insulators
liquids
metals
flakes
floating
critical temperature
transport properties
disorders
oscillations
fabrication
electric fields
shift
single crystals
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Puls, Conor P. ; Cai, Xinxin ; Zhang, Yuhe ; Peng, Jin ; Mao, Zhiqiang ; Liu, Ying. / Structural and metal-insulator transitions in ionic liquid-gated Ca3Ru2O7 surface. In: Applied Physics Letters. 2014 ; Vol. 104, No. 25.
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Structural and metal-insulator transitions in ionic liquid-gated Ca3Ru2O7 surface. / Puls, Conor P.; Cai, Xinxin; Zhang, Yuhe; Peng, Jin; Mao, Zhiqiang; Liu, Ying.

In: Applied Physics Letters, Vol. 104, No. 25, 253503, 23.06.2014.

Research output: Contribution to journalArticle

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AU - Cai, Xinxin

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AU - Liu, Ying

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