Fermi surface of Ba1-xKxFe2As2 as probed by angle-resolved photoemission
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
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
Original language | English |
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Pages (from-to) | 448-451 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its Applications |
Volume | 469 |
Issue number | 9-12 |
Publication status | Published - 19 Mar 2009 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
Scopus | 65649110902 |
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Keywords
Keywords
- Pnictides, Fermi surface, ARPES, Superconductivity, NODELESS SUPERCONDUCTING GAPS, LAYERED SUPERCONDUCTOR, 43 K, IRON