| Autor: |
Burganov, B., Adamo, C., Mulder, A., Uchida, M., King, P. D. C., Harter, J. W., Shai, D. E., Gibbs, A. S., Mackenzie, A. P., Uecker, R., Bruetzam, M., Beasley, M. R., Fennie, C. J., Schlom, D. G., Shen, K. M. |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. 116, 197003 (2016) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.116.197003 |
| Popis: |
Here we demonstrate how the Fermi surface topology and quantum many-body interactions can be manipulated via epitaxial strain in the spin-triplet superconductor Sr$_2$RuO$_4$ and its isoelectronic counterpart Ba$_2$RuO$_4$ using oxide molecular beam epitaxy (MBE), \emph{in situ} angle-resolved photoemission spectroscopy (ARPES), and transport measurements. Near the topological transition of the $\gamma$ Fermi surface sheet, we observe clear signatures of critical fluctuations, while the quasiparticle mass enhancement is found to increase rapidly and monotonically with increasing Ru-O bond distance. Our work demonstrates the possibilities for using epitaxial strain as a disorder-free means of manipulating emergent properties, many-body interactions, and potentially the superconductivity in correlated materials. |
| Databáze: |
arXiv |
| Externí odkaz: |
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