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1. |
Record Nr. |
UNISALENTO991002025949707536 |
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Autore |
Allérès, Danielle |
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Titolo |
Luxe... : strategies, marketing / Danielle Allérès ; préface de Olivier Mellerio |
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Pubbl/distr/stampa |
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ISBN |
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Edizione |
[4. ed] |
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Descrizione fisica |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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2. |
Record Nr. |
UNINA9910300381903321 |
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Autore |
Charnukha Aliaksei |
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Titolo |
Charge Dynamics in 122 Iron-Based Superconductors / / by Aliaksei Charnukha |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2014 |
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ISBN |
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Edizione |
[1st ed. 2014.] |
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Descrizione fisica |
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1 online resource (139 p.) |
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Collana |
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Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5053 |
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Disciplina |
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Soggetti |
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Superconductivity |
Superconductors |
Spectroscopy |
Microscopy |
Optical materials |
Electronic materials |
Nanoscale science |
Nanoscience |
Nanostructures |
Nanotechnology |
Strongly Correlated Systems, Superconductivity |
Spectroscopy and Microscopy |
Optical and Electronic Materials |
Nanoscale Science and Technology |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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Introduction -- Iron-based superconductors -- Experimental and theoretical methods -- Results and discussion -- Summary. |
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Sommario/riassunto |
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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: |
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(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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