자료유형  

 학위논문

Control Number  

0016932344

International Standard Book Number  

9798379717179

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Nuckolls, Kevin Peter.

Publication, Distribution, etc. (Imprint  

[S.l.] : Princeton University., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(212 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

General Note  

Advisor: Yazdani, Ali.

Dissertation Note  

Thesis (Ph.D.)--Princeton University, 2023.

Restrictions on Access Note  

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

Summary, Etc.  

요약Contemporary quantum materials research is guided by themes of topology - the idea that some material properties can be protected against continuous deformation - and of electronic correlations - the idea that the emergent behavior of a collection of electrons is complex and cannot be reduced to the sum of its parts. A natural confluence of these two themes can be engineered in so-called "moire materials", an emerging class of two-dimensional (2D) materials produced by the rotational or lattice misalignment of atomically thin crystals. The prototypical example of this new paradigm is magic-angle twisted bilayer graphene (MATBG), where two atomically thin sheets of carbon, twisted to exactly 1.1 degrees relative to one another, hosts correlated insulating, magnetic topological, and unconventional superconducting states, none of which are found in graphene itself. In this thesis, I discuss a series of experiments that leverage the unparalleled capabilities of scanning tunneling microscopy / spectroscopy (STM / STS) to elucidate the microscopic underpinnings of MATBG. STM / STS is a powerful tool that can probe electronic dynamics with subatomic spatial resolution and unmatched energy resolution. We use STS as a novel thermodynamic sensor to identify a cascade of electronic transitions among correlated metallic phases, and as a novel probe of many-body topology to detect magnetic topological insulators in MATBG. We combine STS with point-contact spectroscopy to establish the unconventional nature of superconductivity in MATBG. Finally, we use the high-resolution imaging capabilities of the STM to probe the many-body wavefunctions of the correlated phases in MATBG, uncovering intricate atomic-scale patterns that encode important information about the origins of these phases.

Subject Added Entry-Topical Term  

Condensed matter physics.

Subject Added Entry-Topical Term  

Materials science.

Subject Added Entry-Topical Term  

Applied physics.

Index Term-Uncontrolled  

Electronic correlations

Index Term-Uncontrolled  

Superconductivity

Index Term-Uncontrolled  

Quantum materials

Index Term-Uncontrolled  

High-resolution imaging

Index Term-Uncontrolled  

Bilayer graphene

Added Entry-Corporate Name  

Princeton University Physics

Host Item Entry  

Dissertations Abstracts International. 84-12B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:639591