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Update README.md
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PeterPOrth authored Jun 26, 2022
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[Peter P. Orth](https://faculty.sites.iastate.edu/porth/), D. Phelan, J. Zhao, H. Zheng, J. F. Mitchell, C. Leighton, Rafael M. Fernandes

### Abstract
Doped perovskite cobaltites (e.g., La$_{1-x}$Sr$_x$CoO$_3$) have been extensively studied for their spin-state physics, electronic inhomogeneity, and insulator-metal transitions. Ferromagnetically-interacting spin-state polarons emerge at low $x$ in the phase diagram of these compounds, eventually yielding long-range ferromagnetism. The onset of long-range ferromagnetism ($x \approx 0.18$) is substantially delayed relative to polaron percolation ($x \approx 0.05$), however, generating a troubling inconsistency. Here, Monte-Carlo simulations of a disordered classical spin model are used to establish that previously ignored \emph{magnetic frustration} is responsible for this effect, enabling faithful reproduction of the magnetic phase diagram.
Doped perovskite cobaltites (e.g., La$_{1-x}$ Sr$_x$ CoO$_3$) have been extensively studied for their spin-state physics, electronic inhomogeneity, and insulator-metal transitions. Ferromagnetically-interacting spin-state polarons emerge at low $x$ in the phase diagram of these compounds, eventually yielding long-range ferromagnetism. The onset of long-range ferromagnetism ($x \approx 0.18$) is substantially delayed relative to polaron percolation ($x \approx 0.05$), however, generating a troubling inconsistency. Here, Monte-Carlo simulations of a disordered classical spin model are used to establish that previously ignored _magnetic frustration_ is responsible for this effect, enabling faithful reproduction of the magnetic phase diagram.

### Description
This repository includes information, code, and data to generate the theoretical figures of the paper (Figs.3 and 4).
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