| Téléchargement | - Voir la version finale : Electronic structure of LuRh₂Si₂ : 'small' Fermi surface reference to YbRh₂Si₂ (PDF, 1.1 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1088/1367-2630/15/9/093014 |
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| Auteur | Rechercher : Friedemann, Sven; Rechercher : Goh, Swee K.; Rechercher : Rourke, Patrick M. C.; Rechercher : Reiss, Pascal; Rechercher : Sutherland, Michael L.; Rechercher : Malte Grosche, F.; Rechercher : Zwicknagl, Gertrud; Rechercher : Fisk, Zachary |
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| Format | Texte, Article |
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| Sujet | Band structure calculation; Heavy-fermion systems; High magnetic fields; Numerical lattices; Quantum critical; Quantum oscillations; Single-crystal structure; Surface configuration; Band structure; Electronic structure; Fermi surface; Silicon; Silicon wafers |
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| Résumé | We present band structure calculations and quantum oscillation measurements on LuRh₂Si₂, which is an ideal reference to the intensively studied quantum critical heavy-fermion system YbRh₂Si₂. Our band structure calculations show a strong sensitivity of the Fermi surface on the position of the silicon atoms z Si within the unit cell. Single crystal structure refinement and comparison of predicted and observed quantum oscillation frequencies and masses yield zSi = 0.379 c in good agreement with numerical lattice relaxation. This value of zSi is suggested for future band structure calculations on LuRh₂Si₂ and YbRh₂Si₂. LuRh₂Si₂ with a full f electron shell represents the 'small' Fermi surface configuration of YbRh2Si 2. Our experimentally and ab intio derived quantum oscillation frequencies of LuRh₂Si₂ differ significantly from the results of earlier measurements on YbRh₂Si₂. Consequently, our results confirm the contribution of the f electrons to the Fermi surface of YbRh₂Si₂ at high magnetic fields. Yet, the limited agreement with refined fully itinerant local density approximation calculations highlights the need for more elaborate models to describe the Fermi surface of YbRh₂Si₂. |
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| Date de publication | 2013-09-10 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Publication du CNRC | Cette publication n’est pas du CNRCCe sont des publications qui ont été rédigées par un auteur du CNRC, mais avant que celui-ci soit employé du CNRC. |
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| Numéro NPARC | 21270629 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | dac0a248-3660-4345-a65a-6f6657d1064c |
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| Enregistrement créé | 2014-02-17 |
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| Enregistrement modifié | 2020-05-29 |
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