Published May 1, 2009
| Version v1
Journal article
Fermi surface of Ba1-xKxFe2As2 as probed by angle-resolved photoemission
Creators
- 1. Leibniz Institute for Solid State and Materials Research, IFW-Dresden, P.O. Box 270116, D-01171 Dresden (Germany)
- 2. Institute of Metal Physics of National Academy of Sciences of Ukraine, 03142 Kyiv (Ukraine)
- 3. Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)
- 4. Department of Physics, Loughborough University, Loughborough LE11 3TU (United Kingdom)
- 5. Elektronenspeicherring BESSY II, Helmholtz-Zentrum Berlin fuer Materialien und Energie, Albert-Einstein-Strasse 15, 12489 Berlin (Germany)
Description
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 (Tc = 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 Γ-X and Γ-Y directions.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physc.2009.03.043Additional details
Identifiers
- DOI
- 10.1016/j.physc.2009.03.043;
- arXiv
- arXiv:0904.4337v1;
- PII
- S0921-4534(09)00079-3;
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 469
- Journal Issue
- 9-12
- Journal Page Range
- p. 448-451
- ISSN
- 0921-4534
- CODEN
- PHYCE6
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41088814
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ARSENIC COMPOUNDS; BARIUM COMPOUNDS; BRILLOUIN ZONES; ELECTRONIC STRUCTURE; ENERGY RANGE; EXCITATION; FERMI LEVEL; IRON COMPOUNDS; PHOTOEMISSION; PNICTIDES; POTASSIUM COMPOUNDS; SIMULATION; SPECTROSCOPY; SUPERCONDUCTIVITY; SUPERCONDUCTORS; SYMMETRY; TEMPERATURE RANGE 0013-0065 K; TRANSITION TEMPERATURE
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; EMISSION; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; PHYSICAL PROPERTIES; SECONDARY EMISSION; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; ZONES
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.