TY - BOOK ID - 48259929 TI - On the Nature of Charge Density Waves, Superconductivity and Their Interplay in 1T-TiSe₂ PY - 2019 SN - 3030298256 3030298248 PB - Cham : Springer International Publishing : Imprint: Springer, DB - UniCat KW - Strongly Correlated Systems, Superconductivity. KW - Theoretical, Mathematical and Computational Physics. KW - Phase Transitions and Multiphase Systems. KW - Charge density waves. KW - Waves, Charge density KW - Free electron theory of metals KW - Waves KW - Superconductivity. KW - Superconductors. KW - Mathematical physics. KW - Phase transitions (Statistical physics). KW - Phase changes (Statistical physics) KW - Phase transitions (Statistical physics) KW - Phase rule and equilibrium KW - Statistical physics KW - Physical mathematics KW - Physics KW - Superconducting materials KW - Superconductive devices KW - Cryoelectronics KW - Electronics KW - Solid state electronics KW - Electric conductivity KW - Critical currents KW - Superfluidity KW - Mathematics KW - Materials UR - https://www.unicat.be/uniCat?func=search&query=sysid:48259929 AB - 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. . ER -