تقرير
Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO$_3$
| العنوان: | Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO$_3$ |
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| المؤلفون: | Yamada, R., Fujioka, J., Kawamura, M., Sakai, S., Hirayama, M., Arita, R., Okawa, T., Hashizume, D., Sato, T., Kagawa, F., Kurihara, R., Tokunaga, M., Tokura, Y. |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | The interplay between electron correlation and topology of relativistic electrons may lead to a new stage of the research on quantum materials and emergent functions. The emergence of various collective electronic orderings/liquids, which are tunable by external stimuli, is a remarkable feature of correlated electron systems, but has rarely been realized in the topological semimetals with high-mobility relativistic electrons. Here, we report that the correlated Dirac electrons with the Mott criticality in perovskite CaIrO$_3$ show unconventional field-induced successive metal-insulator-metal crossovers in the quantum limit accompanying a giant magnetoresistance (MR) with MR ratio of 3,500 % (18 T and 1.4 K). The analysis shows that the insulating state originates from the collective electronic ordering such as charge/spin density wave promoted by electron correlation, whereas it turns into the quasi-one-dimensional metal at higher fields due to the field-induced reduction of chemical potential, highlighting the highly field-sensitive character of correlated Dirac electrons. Comment: 7 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41535-021-00418-2 |
| URL الوصول: | http://arxiv.org/abs/2108.00647 |
| رقم الأكسشن: | edsarx.2108.00647 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/s41535-021-00418-2 |
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