자료유형  

 학위논문

Control Number  

0016931147

International Standard Book Number  

9798380368025

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Haber, Jonah.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of California, Berkeley., 2022

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2022

Physical Description  

1 online resource(118 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-03, Section: B.

General Note  

Advisor: Neaton, Jeffrey B.

Dissertation Note  

Thesis (Ph.D.)--University of California, Berkeley, 2022.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약The interaction between excitons and phonons is fundamental to the nature and fate of photoexcitatons in solids, with important implications for spectroscopy and transport measurements, and for applications in optoelectronics and clean energy. In this dissertation, we present recent advances in computing exciton-phonon interactions from first principles. We implement a recently proposed linear-response reciprocal space-based framework which involves contracting electron-phonon matrix elements computed from density functional perturbation theory (DFPT) with exciton expansion coefficients obtained after building and diagonalizing the ab initio Bethe-Salpeter Hamiltonian, which is built on density functional theory and the GW approximation. We apply this formalism in unique ways to study phenomena related to exciton-phonon interactions, namely the nature of exciton diffusion in acene crystals, the dynamical screening of excitons in halide perovskites due to lattice vibrations, and the asymmetric lineshapes in MoS2 stemming from off-diagonal exciton-phonon coupling.

Subject Added Entry-Topical Term  

Condensed matter physics.

Subject Added Entry-Topical Term  

Physics.

Subject Added Entry-Topical Term  

Physical chemistry.

Index Term-Uncontrolled  

Density functional perturbation theory

Index Term-Uncontrolled  

Excitons

Index Term-Uncontrolled  

Phonons

Index Term-Uncontrolled  

Complex materials

Added Entry-Corporate Name  

University of California, Berkeley Physics

Host Item Entry  

Dissertations Abstracts International. 85-03B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:641726