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The Resource Charge Dynamics in 122 Iron-Based Superconductors, by Aliaksei Charnukha, (electronic resource)

Charge Dynamics in 122 Iron-Based Superconductors, by Aliaksei Charnukha, (electronic resource)

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Charge Dynamics in 122 Iron-Based Superconductors
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Charge Dynamics in 122 Iron-Based Superconductors
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by Aliaksei Charnukha
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Language
eng
Summary
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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non fiction
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Springer Theses, Recognizing Outstanding Ph.D. Research,
Charge Dynamics in 122 Iron-Based Superconductors, by Aliaksei Charnukha, (electronic resource)
Label
Charge Dynamics in 122 Iron-Based Superconductors, by Aliaksei Charnukha, (electronic resource)
Link
http://libproxy.rpi.edu/login?url=http://dx.doi.org/10.1007/978-3-319-01192-9
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mixed
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
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not applicable
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
Introduction -- Iron-based superconductors -- Experimental and theoretical methods -- Results and discussion -- Summary
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https://contentcafe2.btol.com/ContentCafe/Jacket.aspx?Return=1&Type=S&Value=9783319011929&userID=ebsco-test&password=ebsco-test
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{'f': 'http://opac.lib.rpi.edu/record=b3552088'}
Extent
XI, 130 p. 43 illus., 24 illus. in color.
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multiple file formats
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electronic
Isbn
9783319011929
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uncompressed
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
online resource.
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absent
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access
Specific material designation
remote

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