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Modulation of the Metal–Nonmetal Crossover in SrIrO3/CaMnO3 Superlattices Modulation of the Metal–Nonmetal Crossover in SrIrO3/CaMnO3 Superlattices AITranslate

Minghui Gu; Ruixue Zhu; Xinxin Zhang; Zhenzhen Wang; Qichang An; Fang Yang; Xiaoran Liu; Peng Gao; Meng Meng; Jiandong Guo
University of Chinese Academy of Sciences; Peking University; Peking University; University of Chinese Academy of Sciences; University of Chinese Academy of Sciences;Beijing National Laboratory for Condensed Matter Physics and Institute of Physics;Beijing National Laboratory for Condensed Matter Physics and Institute of Physics; Peking University;Beijing National Laboratory for Condensed Matter Physics and Institute of Physics; University of Chinese Academy of Sciences
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Publisher: ACS
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Abstract AITranslate

Due to a combination of the interplay between electron–electron correlation (EEC) and spin–orbit coupling, 3d–5d transition-metal oxide interfaces have been an intriguing platform for the exploration of emergent quantum phenomena. In this work, we investigate the 3d–5d electron coupling by designing SrIrO3/CaMnO3 superlattices and studying their electrical transport behaviors. The [(SrIrO3)n/(CaMnO3)n]m superlattices show a metal–nonmetal crossover (MNC) with the critical temperature increasing monotonically with decreasing n, until n = 1, a nonmetallic behavior is observed up to room temperature. Detailed analyses reveal that the MNC is the consequence of the weak localization modified by the enhanced EEC in SrIrO3 competing with the effective field of spin–orbital relaxation, with the interfaces with CaMnO3 being introduced to the superlattices. This study provides a framework for understanding the microscopic picture of 3d–5d electron coupling.

KeyWords AITranslate

transitionmetal oxide interface superlattices electron−electron interaction spin−orbital coupling weak localization
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Basic Information:

DOI：https://doi.org/10.1021/acsaelm.2c00655

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Citation Information:

Due to a combination of the interplay between electron–electron correlation (EEC) and spin–orbit coupling, 3d–5d transition-metal oxide interfaces have been an intriguing platform for the exploration of emergent quantum phenomena. In this work, we investigate the 3d–5d electron coupling by designing SrIrO3/CaMnO3 superlattices and studying their electrical transport behaviors. The [(SrIrO3)n/(CaMnO3)n]m superlattices show a metal–nonmetal crossover (MNC) with the critical temperature increasing monotonically with decreasing n, until n = 1, a nonmetallic behavior is observed up to room temperature. Detailed analyses reveal that the MNC is the consequence of the weak localization modified by the enhanced EEC in SrIrO3 competing with the effective field of spin–orbital relaxation, with the interfaces with CaMnO3 being introduced to the superlattices. This study provides a framework for understanding the microscopic picture of 3d–5d electron coupling.

quote

GB/T 7714-2015 [1] Minghui Gu, Ruixue Zhu, Xinxin Zhang, et al. ACS Applied Electronic Materials, 2022(4). DOI:10.1021/acsaelm.2c00655.
MLA [1] Minghui Gu, et al., ACS Applied Electronic Materials, no. 4, 2022, https://doi.org/10.1021/acsaelm.2c00655.
APA [1] Minghui Gu, Ruixue Zhu, Xinxin Zhang, Zhenzhen Wang, Qichang An, Fang Yang, Xiaoran Liu, Peng Gao, Meng Meng, & Jiandong Guo. (2022). ACS Applied Electronic Materials(4). https://doi.org/10.1021/acsaelm.2c00655
IEEE [1] Minghui Gu, Ruixue Zhu, Xinxin Zhang, Zhenzhen Wang, Qichang An, Fang Yang, Xiaoran Liu, Peng Gao, Meng Meng, and Jiandong Guo, ACS Applied Electronic Materials, no. 4, 2022, doi: 10.1021/acsaelm.2c00655. keywords: {transitionmetal oxide interface superlattices electron−electron interaction spin−orbital coupling weak localization}