Academic Journal
Normal State O 17 NMR Studies of Sr2RuO4 under Uniaxial Stress
| العنوان: | Normal State O 17 NMR Studies of Sr2RuO4 under Uniaxial Stress |
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| المؤلفون: | Luo, Yongkang, Pustogow, A., Guzman, P., Dioguardi, A.P., Thomas, S.M., Ronning, F., Kikugawa, N., Sokolov, D.A., Jerzembeck, F., Mackenzie, A.P., Hicka, C.W., Bauer, E.D., Mazin, I.I., Brown, S.E. |
| بيانات النشر: | APS |
| سنة النشر: | 2019 |
| المجموعة: | LeibnizOpen (The Leibniz Association) |
| مصطلحات موضوعية: | Compressive stress, Calculations, Van Hove singularities, Nuclear magnetic resonanc |
| Time: | 530 |
| الوصف: | The effects of uniaxial compressive stress on the normal state O17 nuclear-magnetic-resonance properties of the unconventional superconductor Sr2RuO4 are reported. The paramagnetic shifts of both planar and apical oxygen sites show pronounced anomalies near the nominal a-axis strain μaaμv that maximizes the superconducting transition temperature Tc. The spin susceptibility weakly increases on lowering the temperature below T≃10 K, consistent with an enhanced density of states associated with passing the Fermi energy through a van Hove singularity. Although such a Lifshitz transition occurs in the γ band formed by the Ru dxy states hybridized with in-plane O pπ orbitals, the large Hund's coupling renormalizes the uniform spin susceptibility, which, in turn, affects the hyperfine fields of all nuclei. We estimate this "Stoner" renormalization S by combining the data with first-principles calculations and conclude that this is an important part of the strain effect, with implications for superconductivity. © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. ; publishedVersion |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.34657/5664 |
| الاتاحة: | https://oa.tib.eu/renate/handle/123456789/6617 https://doi.org/10.34657/5664 |
| Rights: | CC BY 4.0 Unported ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.ECFFD772 |
| قاعدة البيانات: | BASE |
| DOI: | 10.34657/5664 |
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