| Autor: |
Sunko, V., Mazzola, F., Kitamura, S., Khim, S., Kushwaha, P., Clark, O. J., Watson, M., Markovic, I., Biswas, D., Pourovskii, L., Kim, T. K., Lee, T. -L., Thakur, P. K., Rosner, H., Georges, A., Moessner, R., Oka, T., Mackenzie, A. P., King, P. D. C. |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Sci.Adv. 6 (2020) eaaz0611 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1126/sciadv.aaz0611 |
| Popis: |
A nearly free electron metal and a Mott insulating state can be thought of as opposite ends of possibilities for the motion of electrons in a solid. In the magnetic oxide metal PdCrO$_{2}$, these two coexist as alternating layers. Using angle resolved photoemission, we surprisingly find sharp band-like features in the one-electron removal spectral function of the correlated subsystem. We show that these arise because a hole created in the Mott layer moves to and propagates in the metallic layer while retaining memory of the Mott layer's magnetism. This picture is quantitatively supported by a strong coupling analysis capturing the physics of PdCrO$_{2}$ in terms of a Kondo lattice Hamiltonian. Our findings open new routes to use the non-magnetic probe of photoemission to gain insights into the spin-susceptibility of correlated electron systems. |
| Databáze: |
arXiv |
| Externí odkaz: |
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