Ab Initio Studies On Superconductivity In Alkali-doped Fullerides by Yusuke NomuraAb Initio Studies On Superconductivity In Alkali-doped Fullerides by Yusuke Nomura

Ab Initio Studies On Superconductivity In Alkali-doped Fullerides

byYusuke Nomura

Paperback | June 12, 2018

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This book covers high-transition temperature (Tc)s-wave superconductivity and the neighboring Mott insulating phase in alkali-doped fullerides. The author presents (1) a unified theoretical description of the phase diagram and (2) a nonempirical calculation ofTc. For these purposes, the author employs an extension of the DFT+DMFT (density-functional theory + dynamical mean-field theory). He constructs a realistic electron-phonon-coupled Hamiltonian with a newly formulated downfolding method. The Hamiltonian is analyzed by means of the extended DMFT. A notable aspect of the approach is that it requires only the crystal structure as a priori knowledge. 

Remarkably, the nonempirical calculation achieves for the first time a quantitative reproduction of the experimental phase diagram including the superconductivity and the Mott phase. The calculatedTcagrees well with the experimental data, with the difference within 10 K. 

The book provides details of the computational scheme, which can also be applied to other superconductors and other phonon-related topics. The author clearly describes a superconducting mechanism where the Coulomb and electron­-phonon interactions show an unusual cooperation in the superconductivity thanks to the Jahn-Teller nature of the phonons.

Dr. Yusuke NomuraDepartment of Applied Physics, The University of Tokyo
Title:Ab Initio Studies On Superconductivity In Alkali-doped FulleridesFormat:PaperbackDimensions:143 pagesPublished:June 12, 2018Publisher:Springer NatureLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9811093547

ISBN - 13:9789811093548