On the Nature of Charge Density Waves, Superconductivity and Their Interplay in 1T-TiSe₂ (eBook)

Chuan Chen (Autor)

eBook Download: PDF

2019 | 1st ed. 2019
XVI, 105 Seiten
Springer International Publishing (Verlag)
978-3-030-29825-8 (ISBN)

Infos

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 CDW and SC physics in TiSe2.   

Produkt-Details

• Erscheint lt. Verlag: 27.9.2019
• Reihe/Serie: Springer Theses
• Reihe/Serie: Springer Theses
• Zusatzinfo: XVI, 105 p. 35 illus., 31 illus. in color.
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie
• Themenwelt: Technik ► Maschinenbau
• Schlagworte: CDW Fluctuations • Charge Density Waves • Discommensuration • Excitonic condensation • Ginzburg-Landau theory • Superconductivity and charge density waves • TiSe2 • Transition Metal Dichalcognides
• ISBN-10: 3-030-29825-6 / 3030298256
• ISBN-13: 978-3-030-29825-8 / 9783030298258