자료유형  

 학위논문

Control Number  

0017161512

International Standard Book Number  

9798382230801

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Ta Tang.

Publication, Distribution, etc. (Imprint  

[S.l.] : Stanford University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

135 p.

General Note  

Source: Dissertations Abstracts International, Volume: 85-11, Section: B.

General Note  

Advisor: Devereaux, Thomas;Zhi-Xun Shen.

Dissertation Note  

Thesis (Ph.D.)--Stanford University, 2024.

Summary, Etc.  

요약Many exotic phases of matter, such as quantum spin liquid (QSL) and high temperature superconductivity, are associated with strong correlations between constituent particles. Yet theoretical analysis is largely hindered by the strong interactions. Numeric simulations, although facing the challenge of exponential complexity, have provided valuable theoretical insights and connections to experiments. In this work, I present wavefunction-based numerical methods to study strongly correlated systems with an emphasis on dynamics, which can provide extra information about the excitations in the system, connect theoretical modeling with experimental spectroscopies and can reveal interactions in the system. After an overview, I will first discuss characterizations of the QSL on a triangular lattice through dynamical spin structure factor and Raman scattering. The QSL phase shows distinct spectral features, among which a prominent chiral excitation in Raman scattering A2 channel signals proximity to chiral ordering. I then present the study of salient spectral features observed in recent angle resolved photoemission spectroscopy experiment on a one-dimensional cuprate. These spectral features can be well reproduced by adding extended electron-phonon couplings, which enhances superconducting pairing correlations in 1D and may help the establishment of superconductivity in 2D. Finally, I present a time-dependent nonequilibrium study and show cuprates superconductivity could potentially be enhanced via laser driven photodoping. I conclude with some ideas to go beyond the results presented in this thesis.

Subject Added Entry-Topical Term  

Applied physics.

Subject Added Entry-Topical Term  

Quantum physics.

Index Term-Uncontrolled  

Quantum spin liquid

Index Term-Uncontrolled  

Superconductivity

Index Term-Uncontrolled  

Wavefunction

Added Entry-Corporate Name  

Stanford University.

Host Item Entry  

Dissertations Abstracts International. 85-11B.

Electronic Location and Access  

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Control Number  

joongbu:658212