AI Article Synopsis
- The study focuses on the magnetoresistance (MR) behavior of the superconductor LaRuP, highlighting its unusual properties compared to other iron pnictide superconductors.
- Unlike other similar materials, LaRuP does not show an enhancement of electron-electron correlations, and its MR does not follow the expected saturating behavior.
- The research discusses how the unique band structure and a large open Fermi surface of LaRuP contribute to its significant MR, indicating that this behavior is due to different conduction mechanisms rather than strong electron-electron correlations.
Article Abstract
The magnetoresistance (MR) of iron pnictide superconductors is often dominated by electron-electron correlations and deviates from theor saturating behaviors expected for uncorrelated metals. Contrary to similar Fe-based pnictide systems, the superconductor LaRuP(= 4 K) shows no enhancement of electron-electron correlations. Here we report a non-saturating MR deviating from theor saturating behaviors in LaRuP. We present results in single crystals of LaRuP, where we observe a MR followingup to 22 T. We discuss our result by comparing the bandstructure of LaRuPwith that of Fe based pnictide superconductors. The different orbital structures of Fe and Ru leads to a 3D Fermi surface with negligible bandwidth renormalization in LaRuP, that contains a large open sheet over the whole Brillouin zone. We show that the large MR in LaRuPis unrelated to the one obtained in materials with strong electron-electron correlations and that it is compatible instead with conduction due to open orbits on the rather complex Fermi surface structure of LaRuP.
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| http://dx.doi.org/10.1088/1361-648X/abdbea | DOI Listing |
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