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191022 ||| eng |
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|a 9783030298258
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1 |
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|a Chen, Chuan
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|a On the Nature of Charge Density Waves, Superconductivity and Their Interplay in 1T-TiSe₂
|h Elektronische Ressource
|c by Chuan Chen
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| 250 |
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|a 1st ed. 2019
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| 260 |
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|a Cham
|b Springer International Publishing
|c 2019, 2019
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| 300 |
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|a XVI, 105 p. 35 illus., 31 illus. in color
|b online resource
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|a Introduction -- Excitonic character of CDWin TiSe2 -- Phenomenological model of coexisting CDWand superconductivity in TiSe2 -- Excitonic CDWfluctuations and superconductivity -- Anomalous quantum metal phase in TiSe2 -- Conclusions -- Appendices
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| 653 |
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|a Superconductivity
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| 653 |
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|a Phase Transitions and Multiphase Systems
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| 653 |
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|a Mathematical physics
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| 653 |
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|a Superconductors
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| 653 |
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|a Condensed matter
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| 653 |
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|a Theoretical, Mathematical and Computational Physics
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| 041 |
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7 |
|a eng
|2 ISO 639-2
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| 989 |
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|b Springer
|a Springer eBooks 2005-
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| 490 |
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|a Springer Theses, Recognizing Outstanding Ph.D. Research
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| 028 |
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|a 10.1007/978-3-030-29825-8
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| 856 |
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|u https://doi.org/10.1007/978-3-030-29825-8?nosfx=y
|x Verlag
|3 Volltext
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|a 620.112973
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| 520 |
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|a This thesis presents analytical theoretical studies on the interplay between charge density waves (CDW) and superconductivity (SC) in the actively studied transition-metal dichalcogenide 1T-TiSe2. It begins by reapproaching a years-long debate over the nature of the phase transition to the commensurate CDW (CCDW) state and the role played by the intrinsic tendency towards excitonic condensation in this system. A Ginzburg-Landau phenomenological theory was subsequently developed to understand the experimentally observed transition from commensurate to incommensurate CDW (ICDW) order with doping or pressure, and the emergence of a superconducting dome that coexists with ICDW. Finally, to characterize microscopically the effects of the interplay between CDW and SC, the spectrum of CDW fluctuations beyond mean-field was studied in detail. In the aggregate, the work reported here provides an encompassing understanding of what are possibly key microscopic underpinnings of the CDWand SC physics in TiSe2.
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