%0 Journal Article %1 PhysRevB.100.205106 %A Klotz, J. %A Götze, K. %A Lorenz, V. %A Prots, Yu. %A Rosner, H. %A Harima, H. %A Bochenek, L. %A Henkie, Z. %A Cichorek, T. %A Sheikin, I. %A Wosnitza, J. %D 2019 %I American Physical Society %J Phys. Rev. B %K a %N 20 %P 205106 %R 10.1103/PhysRevB.100.205106 %T Fermi surface investigation of the filled skutterudite LaRu$_4$As$_12$ %U https://link.aps.org/doi/10.1103/PhysRevB.100.205106 %V 100 %X Of all stoichiometric filled-skutterudite superconductors, LaRu$_4$As$_12$ has the highest critical field and temperature. Here we report on a detailed Fermi-surface investigation of LaRu$_4$As$_12$ by means of de Haas–van Alphen measurements and density-functional-theory calculations. We find evidence for a nearly spherical and a multiply connected Fermi-surface sheet. The different effective masses and mass enhancements for the two sheets support two-band superconductivity, which was inferred from previous specific-heat measurements. Furthermore, quantum oscillations persist as well in the superconducting phase. We use two models to describe the additional damping, yielding energy gaps differing by a factor of 5.

@article{PhysRevB.100.205106, abstract = {Of all stoichiometric filled-skutterudite superconductors, LaRu$_4$As$_{12}$ has the highest critical field and temperature. Here we report on a detailed Fermi-surface investigation of LaRu$_4$As$_{12}$ by means of de Haas–van Alphen measurements and density-functional-theory calculations. We find evidence for a nearly spherical and a multiply connected Fermi-surface sheet. The different effective masses and mass enhancements for the two sheets support two-band superconductivity, which was inferred from previous specific-heat measurements. Furthermore, quantum oscillations persist as well in the superconducting phase. We use two models to describe the additional damping, yielding energy gaps differing by a factor of 5.}, added-at = {2021-10-14T15:13:39.000+0200}, author = {Klotz, J. and G\"otze, K. and Lorenz, V. and Prots, Yu. and Rosner, H. and Harima, H. and Bochenek, L. and Henkie, Z. and Cichorek, T. and Sheikin, I. and Wosnitza, J.}, biburl = {https://www.bibsonomy.org/bibtex/2f44e804ac2250955984bcc5fa5918e90/ctqmat}, day = 5, description = {Phys. Rev. B 100, 205106 (2019) - Fermi surface investigation of the filled skutterudite ${\mathrm{LaRu}}_{4}{\mathrm{As}}_{12}$}, doi = {10.1103/PhysRevB.100.205106}, interhash = {29f97809025c6009f723f81707a0737b}, intrahash = {f44e804ac2250955984bcc5fa5918e90}, journal = {Phys. Rev. B}, keywords = {a}, month = nov, number = 20, numpages = {8}, pages = 205106, publisher = {American Physical Society}, timestamp = {2023-10-20T09:59:16.000+0200}, title = {Fermi surface investigation of the filled skutterudite LaRu$_{\mathbf{4}}$As$_{\mathbf{12}}$}, url = {https://link.aps.org/doi/10.1103/PhysRevB.100.205106}, volume = 100, year = 2019 }