Optical spectroscopy study of Ca3(Ru0.91Mn0.09)2O7 single crystal in high magnetic fields

X. Xu, J. Peng, J. Zhang, Z. Ma, C. Chen, J. Han, B. Liu, L. Lin, X. Wu, Z. Mao, Z. Qu, Z. Sheng

Research output: Contribution to journalArticle

Abstract

The magneto-optical spectrum, with magnetic fields up to 42 T, of double layered ruthenates Ca3(Ru0.91Mn0.09)2O7 (CRMO) single crystal is studied. Both the temperature and magnetic field induced insulator-to-metal transitions (IMTs) are observed via magneto-optical properties of the crystal. The critical magnetic field (H // c) of IMT for CRMO is found to be as large as 35 T at 5 K. The fine structure of optical spectra identified the antiferromagnetic/ferro-orbital-ordering configurations of Ru 4d orbitals at low temperatures. Meanwhile, the configuration of orbital polarization of such double-layer CRMO single crystal is discussed. These results suggest that the orbital degree of freedom plays an important role in the field induced IMT of multi-orbital system. \ 2018 Science China Press
Original languageEnglish
Pages (from-to)20-25
Number of pages6
JournalScience Bulletin
Volume64
Issue number1
DOIs
StatePublished - 2019

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