Kramer-Pesch approximation for analyzing field-angle-resolved measurements made in unconventional superconductors: A calculation of the zero-energy density of states
| dc.creator | Nagai, Yuki | |
| dc.creator | Hayashi, Nobuhiko | |
| dc.date | 2008-02-12 | |
| dc.date | 2008-08-29 | |
| dc.date.accessioned | 2026-07-07T09:58:58Z | |
| dc.date.available | 2026-07-07T09:58:58Z | |
| dc.description | By measuring angular-oscillation behavior of the heat capacity with respect to the applied field direction, one can detect the details of the gap structure. We introduce the Kramer-Pesch approximation (KPA) as a new method to analyze the field-angle-dependent experiments quantitatively. We calculate the zero energy density of states for various combinations of typical Fermi surfaces and superconducting gaps. The KPA yields a merit that one can quantitatively compare theoretical calculations with experimental results without involving heavy numerical computations, even for complicated Fermi surfaces. We show an inadequacy of the frequently-used Doppler-shift technique, which is remedied by application of the KPA. | |
| dc.description | 5 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0802.1579 | |
| dc.identifier | http://arxiv.org/abs/0802.1579 | |
| dc.identifier | Phys. Rev. Lett. 101 (2008) 097001 | |
| dc.identifier | doi:10.1103/PhysRevLett.101.097001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/167872 | |
| dc.subject | Superconductivity | |
| dc.title | Kramer-Pesch approximation for analyzing field-angle-resolved measurements made in unconventional superconductors: A calculation of the zero-energy density of states | |
| dc.type | text |