Electrodynamics of electron doped iron-pnictide superconductors Ba(Fe1-xMx)2As2
Creators
- 1. 1. Physikalisches Institut, Universiaet Stuttgart (Germany)
- 2. Department of Physics, Zhejiang University (China)
Description
The temperature dependence of the ab-plane optical reflectivity of Ba(Fe0.92Co0.08)2As2 and Ba(Fe0.95Ni0.05)2As2 single crystals is measured in a wide spectral range. In the metallic state, the optical conductivity consists of a broad incoherent background and a narrow Drude-like component which determines the transport properties; only the latter contribution strongly depends on the composition and temperature. Upon entering the superconducting regime, the conductivity below 100 cm-1 drops due to the complete opening a gap in the density of states at 2Δ/kBTc∼2.5-3. From the analysis of the complex conductivity spectra we obtain the penetration depth λ=(3500±350) A for Ba(Fe0.92Co0.08)2As2 and (3000±300) A for Ba(Fe0.95Ni0.05)2As2. The calculated superfluid density ρs of both compounds nicely fits the scaling relation ρs=(125±25)σdcTc.
Additional details
Identifiers
Publishing Information
- Journal Title
- Verhandlungen der Deutschen Physikalischen Gesellschaft
- Journal Issue
- Regensburg 2010 issue
- Series
- Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 45(3)
- Journal Page Range
- [1 p.]
- ISSN
- 0420-0195
- CODEN
- VDPEAZ
Conference
- Title
- DPG Spring meeting 2010 of the condensed matter section with the divisions biological physics, chemical and polymer physics, crystallography, dielectric solids, dynamics and statistical physics, low temperature physics, magnetism, metal and material physics, physics of socio-economic systems, radiation and medical physics, semiconductor physics, surface science, thin films, vacuum science and technology as well as the working group industry and business, with job market, symposia, teachers' days, tutorials, exhibition of scientific instruments and literature
- Dates
- 21-26 Mar 2010
- Place
- Regensburg (Germany)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 42068143
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- ABSORPTION SPECTRA; BARIUM COMPOUNDS; COBALT ARSENIDES; DENSITY; ENERGY GAP; ENERGY-LEVEL DENSITY; EXPERIMENTAL DATA; FREQUENCY DEPENDENCE; INFRARED SPECTRA; IRON ARSENIDES; MONOCRYSTALS; NICKEL ARSENIDES; OPACITY; OPTICAL DISPERSION; PENETRATION DEPTH; REFLECTIVITY; SCALING LAWS; SPECTRAL REFLECTANCE; SUPERCONDUCTIVITY; SUPERCONDUCTORS; SUPERFLUIDITY; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ARSENIC COMPOUNDS; ARSENIDES; COBALT COMPOUNDS; CRYSTALS; DATA; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; INFORMATION; IRON COMPOUNDS; NICKEL COMPOUNDS; NUMERICAL DATA; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; PNICTIDES; SPECTRA; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- Session: TT 9.24 Mo 14:00; No further information available