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03696nam a22006015i 4500 |
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978-3-319-01192-9 |
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DE-He213 |
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20151030021116.0 |
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cr nn 008mamaa |
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130912s2014 gw | s |||| 0|eng d |
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|a 9783319011929
|9 978-3-319-01192-9
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|a 10.1007/978-3-319-01192-9
|2 doi
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|a QC611.9-611.98
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|a 530.41
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|a Charnukha, Aliaksei.
|e author.
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|a Charge Dynamics in 122 Iron-Based Superconductors
|h [electronic resource] /
|c by Aliaksei Charnukha.
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|a Cham :
|b Springer International Publishing :
|b Imprint: Springer,
|c 2014.
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|a XI, 130 p. 43 illus., 24 illus. in color.
|b online resource.
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|a text
|b txt
|2 rdacontent
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|a computer
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|2 rdamedia
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|a online resource
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|a text file
|b PDF
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|a Springer Theses, Recognizing Outstanding Ph.D. Research,
|x 2190-5053
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|a Introduction -- Iron-based superconductors -- Experimental and theoretical methods -- Results and discussion -- Summary.
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|a This thesis combines highly accurate optical spectroscopy data on the recently discovered iron-based high-temperature superconductors with an incisive theoretical analysis. Three outstanding results are reported: (1) The superconductivity-induced modification of the far-infrared conductivity of an iron arsenide with minimal chemical disorder is quantitatively described by means of a strong-coupling theory for spin fluctuation mediated Cooper pairing. The formalism developed in this thesis also describes prior spectroscopic data on more disordered compounds. (2) The same materials exhibit a sharp superconductivity-induced anomaly for photon energies around 2.5 eV, two orders of magnitude larger than the superconducting energy gap. The author provides a qualitative interpretation of this unprecedented observation, which is based on the multiband nature of the superconducting state. (3) The thesis also develops a comprehensive description of a superconducting, yet optically transparent iron chalcogenide compound. The author shows that this highly unusual behavior can be explained as a result of the nanoscopic coexistence of insulating and superconducting phases, and he uses a combination of two complementary experimental methods - scanning near-field optical microscopy and low-energy muon spin rotation - to directly image the phase coexistence and quantitatively determine the phase composition. These data have important implications for the interpretation of data from other experimental probes.
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|a Physics.
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|a Superconductivity.
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|a Superconductors.
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|a Nanoscale science.
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| 650 |
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|a Nanoscience.
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|a Nanostructures.
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|a Spectroscopy.
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|a Microscopy.
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|a Optical materials.
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|a Electronic materials.
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|a Nanotechnology.
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|a Physics.
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|a Strongly Correlated Systems, Superconductivity.
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|a Spectroscopy and Microscopy.
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|a Optical and Electronic Materials.
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| 650 |
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|a Nanoscale Science and Technology.
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|a Nanotechnology.
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| 710 |
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|a SpringerLink (Online service)
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|t Springer eBooks
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|i Printed edition:
|z 9783319011912
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| 830 |
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|a Springer Theses, Recognizing Outstanding Ph.D. Research,
|x 2190-5053
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|u http://dx.doi.org/10.1007/978-3-319-01192-9
|z Full Text via HEAL-Link
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|a ZDB-2-PHA
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|a Physics and Astronomy (Springer-11651)
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