Year: 2014
Type: article
Abstract: We report on a comprehensive de Haas--van Alphen (dHvA) study of the iron pnictide ${\text{LaFe}}_{2}$${\text{P}}_{2}$. Our extensive density-functional band-structure calculations can well explain the measured angular-dependent dHvA frequencies. As salient feature, we observe only one quasi-two-dimensional Fermi-surface sheet; i.e., a hole-like Fermi-surface cylinder around $\ensuremath{\Gamma}$, essential for ${s}_{\ifmmode\pm\else\textpm\fi{}}$ pairing, is missing. In spite of considerable mass enhancements due to many-body effects, ${\text{LaFe}}_{2}$${\text{P}}_{2}$ shows no superconductivity. This is likely caused by the absence of any nesting between electron and hole bands.
Source: Physical Review B
Institutions: Université de Montréal, Helmholtz-Zentrum Dresden-Rossendorf, Dresden High Magnetic Field Laboratory, Technische Universität Dresden, Centre National de la Recherche Scientifique, Université Joseph Fourier, University of California, Irvine, Laboratoire National des Champs Magnétiques Intenses, George Washington University, Max Planck Institute for Chemical Physics of Solids
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funder: National Science Foundation
OpenAlex ID: W2005602231