Fermi surface of Ba1-xKxFe2As2 as probed by angle-resolved photoemission
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
Here we apply high resolution angle-resolved photoemission spectroscopy (ARPES) using a wide excitation energy range to probe the electronic structure and the Fermi surface topology of the Ba1-xKxFe2As2 (T-c = 32 K) superconductor. We find significant deviations in the low energy band structure from that predicted in calculations. A set of Fermi surface sheets with unexpected topology is detected at the Brillouin zone boundary. At the X-symmetry point the Fermi surface is formed by a shallow electron-like pocket surrounded by four hole-like pockets elongated in Gamma-X and Gamma-Y directions. (C) 2009 Elsevier B.V. All rights reserved.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 448-451 |
Seitenumfang | 4 |
Fachzeitschrift | Physica C: Superconductivity and its Applications |
Jahrgang | 469 |
Ausgabenummer | 9-12 |
Publikationsstatus | Veröffentlicht - 19 März 2009 |
Peer-Review-Status | Ja |
Extern publiziert | Ja |
Externe IDs
Scopus | 65649110902 |
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Schlagworte
Schlagwörter
- Pnictides, Fermi surface, ARPES, Superconductivity, NODELESS SUPERCONDUCTING GAPS, LAYERED SUPERCONDUCTOR, 43 K, IRON