Nucleation and growth bottleneck in the conductivity recovery dynamics of nickelate thin films
| Autor: | Abreu, Elsa, Meyers, Derek, Thorsmolle, Verner K., Zhang, Jingdi, Liu, Xiaoran, Geng, Kun, Chakhalian, Jak, Averitt, Richard D. |
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| Rok vydání: | 2019 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/acs.nanolett.0c02828 |
| Popis: | We investigate THz conductivity dynamics in NdNiO$_3$ and EuNiO$_3$ thin films following a photoinduced thermal quench into the metallic state and reveal a clear contrast between first- and second-order dynamics. While in EuNiO$_3$ the conductivity recovers exponentially, in NdNiO$_3$ the recovery is non-exponential and slower than a simple thermal model. Crucially, it is consistent with first-order dynamics and well-described by a 2d Avrami model, with supercooling leading to metastable phase coexistence. The large transients seen in our films are promising for fast electronic (and magnetic) switching applications. Comment: includes supplemental material |
| Databáze: | arXiv |
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