| Download | - View final version: Electronic structure of LuRh₂Si₂ : 'small' Fermi surface reference to YbRh₂Si₂ (PDF, 1.1 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1088/1367-2630/15/9/093014 |
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| Author | Search for: Friedemann, Sven; Search for: Goh, Swee K.; Search for: Rourke, Patrick M. C.; Search for: Reiss, Pascal; Search for: Sutherland, Michael L.; Search for: Malte Grosche, F.; Search for: Zwicknagl, Gertrud; Search for: Fisk, Zachary |
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| Format | Text, Article |
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| Subject | 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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| Abstract | 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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| Publication date | 2013-09-10 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC publication | This is a non-NRC publication"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC. |
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| NPARC number | 21270629 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | dac0a248-3660-4345-a65a-6f6657d1064c |
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| Record created | 2014-02-17 |
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| Record modified | 2020-05-29 |
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