자료유형  

 학위논문

Control Number  

0017163718

International Standard Book Number  

9798342107303

Dewey Decimal Classification Number  

515.39

Main Entry-Personal Name  

Rios, Carlos Roberto Kometter.

Publication, Distribution, etc. (Imprint  

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

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

239 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-04, Section: B.

General Note  

Advisor: Feldman, Ben.

Dissertation Note  

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

Summary, Etc.  

요약Semiconductor moire superlattices provide an ideal platform to study strongly correlated quantum phases due to their high degree of tunability and the diverse array of interaction-driven ground states they host. These superlattices are formed by stacking two or more two-dimensional semiconductors with a slight twist or lattice mismatch, resulting in a periodic moire pattern with a much larger unit cell compared to the original lattices.In this thesis, I present a series of local electronic compressibilty measurements using a scanning single-electron transistor (SET) to analyze local properties of correlated states in semiconductor moire systems. First, I review two phenomena in lattice systems with very large lattice constants: Hofstadter's physics and generalized Wigner crystals (GWC). By employing a scanning SET, we achieve high-resolution measurements of the local electronic compressibility and chemical potential in these moire superlattices.Then, I describe measurements of a twisted WSe2/MoSe2heterobilayer, where the coexistence of flat and dispersive moire bands leads to intricate competition between Hofstadter and GWCs. I discuss how these charge-ordered states form spatial domains and how these domains respond to twist angle disorder and both intrinsic and extrinsic potentials at mesoscopic scales. Finally, I present measurements on twisted bilayer WSe2, where interlayer tunneling must be taken into account and leads to topological bands.

Subject Added Entry-Topical Term  

Fractals.

Subject Added Entry-Topical Term  

Phase transitions.

Subject Added Entry-Topical Term  

Energy.

Subject Added Entry-Topical Term  

Electrons.

Subject Added Entry-Topical Term  

Transistors.

Subject Added Entry-Topical Term  

Quantum dots.

Subject Added Entry-Topical Term  

Magnetic fields.

Subject Added Entry-Topical Term  

Electric fields.

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Atomic physics.

Subject Added Entry-Topical Term  

Electromagnetics.

Subject Added Entry-Topical Term  

Quantum physics.

Subject Added Entry-Topical Term  

Thermodynamics.

Added Entry-Corporate Name  

Stanford University.

Host Item Entry  

Dissertations Abstracts International. 86-04B.

Electronic Location and Access  

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Control Number  

joongbu:658407