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Magnetic and structural properties of the iron silicide superconductor LaFeSiH

hal.structure.identifierMatériaux, Rayonnements, Structure [NEEL - MRS]
dc.contributor.authorHANSEN, M. F.
hal.structure.identifierMagnétisme et Supraconductivité [NEEL - MagSup]
hal.structure.identifierUniversity of Petroleum and Energy Studies [Dehradun] [UPES]
dc.contributor.authorLAYEK, S.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVANEY, Jean-Baptiste
hal.structure.identifierMatériaux, Rayonnements, Structure [NEEL - MRS]
dc.contributor.authorCHAIX, Laura
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSUCHOMEL, Matthew
hal.structure.identifierEuropean Synchrotron Radiation Facility [Grenoble] [ESRF]
dc.contributor.authorMIKOLASEK, Mirko
hal.structure.identifierEuropean Synchrotron Radiation Facility [Grenoble] [ESRF]
dc.contributor.authorGARBARINO, Gastón
hal.structure.identifierEuropean Synchrotron Radiation Facility [Grenoble] [ESRF]
dc.contributor.authorCHUMAKOV, Alexander
hal.structure.identifierEuropean Synchrotron Radiation Facility [Grenoble] [ESRF]
dc.contributor.authorRÜFFER, Rudolf
hal.structure.identifierCRG & Grands instruments [NEEL - CRG]
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorNASSIF, V.
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorHANSEN, Thomas
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorELKAÏM, Erik
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorPELLETIER, T.
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorMAYAFFRE, Hadrien
hal.structure.identifierUniversità degli Studi di Cagliari = University of Cagliari = Université de Cagliari [UniCa]
dc.contributor.authorBERNARDINI, F.
hal.structure.identifierMagnétisme et Supraconductivité [NEEL - MagSup]
dc.contributor.authorSULPICE, A.
hal.structure.identifierMagnétisme et Supraconductivité [NEEL - MagSup]
dc.contributor.authorNÚÑEZ-REGUEIRO, Manuel
hal.structure.identifierMagnétisme et Supraconductivité [NEEL - MagSup]
dc.contributor.authorRODIÈRE, Pierre
hal.structure.identifierThéorie de la Matière Condensée [NEEL - TMC]
dc.contributor.authorCANO, Andrés
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTENCÉ, Sophie
hal.structure.identifierMatériaux, Rayonnements, Structure [NEEL - MRS]
dc.contributor.authorTOULEMONDE, Pierre
hal.structure.identifierLaboratoire national des champs magnétiques intenses - Grenoble [LNCMI-G ]
dc.contributor.authorJULIEN, Marc-Henri
hal.structure.identifierMagnétisme et Supraconductivité [NEEL - MagSup]
dc.contributor.authorD'ASTUTO, Matteo
dc.date.issued2023-09-05
dc.description.abstractEnThe magnetic and structural properties of the recently discovered pnictogen/chalcogen-free superconductor LaFeSiH ($T_c\simeq10$~K) have been investigated by $^{57}$Fe synchrotron M{\"o}ssbauer source (SMS) spectroscopy, x-ray and neutron powder diffraction and $^{29}$Si nuclear magnetic resonance spectroscopy (NMR). No sign of long range magnetic order or local moments has been detected in any of the measurements and LaFeSiH remains tetragonal down to 2 K. The activated temperature dependence of both the NMR Knight shift and the relaxation rate $1/T_1$ is analogous to that observed in strongly overdoped Fe-based superconductors. These results, together with the temperature-independent NMR linewidth, show that LaFeSiH is an homogeneous metal, far from any magnetic or nematic instability, and with similar Fermi surface properties as strongly overdoped iron pnictides. This raises the prospect of enhancing the $T_c$ of LaFeSiH by reducing its carrier concentration through appropriate chemical substitutions. Additional SMS spectroscopy measurements under hydrostatic pressure up to 18.8~GPa found no measurable hyperfine field.
dc.language.isoen
dc.title.enMagnetic and structural properties of the iron silicide superconductor LaFeSiH
dc.typeDocument de travail - Pré-publication
dc.identifier.doi10.48550/arXiv.2309.02241
dc.subject.halChimie/Matériaux
dc.identifier.arxiv2309.02241
hal.identifierhal-04214168
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04214168v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2023-09-05&rft.au=HANSEN,%20M.%20F.&LAYEK,%20S.&VANEY,%20Jean-Baptiste&CHAIX,%20Laura&SUCHOMEL,%20Matthew&rft.genre=preprint


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