자료유형  

 학위논문

Control Number  

0016931990

International Standard Book Number  

9798379651442

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Pouse, Winston.

Publication, Distribution, etc. (Imprint  

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

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(156 p.)

General Note  

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

General Note  

Advisor: Feldman, Ben;Kastner, Marc A.;Goldhaber-Gordon, David;Bent, Stacey F.

Dissertation Note  

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

Restrictions on Access Note  

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

Summary, Etc.  

요약Advancements in our control and understanding of quantum systems promise dramatic change in technology, potentially affecting fields of computation, sensing, and even power transmission. These grand possibilities are driven by new phenomena that emerge from strong quantum mechanical interactions between electrons in a material. One limitation to realizing these breakthroughs is that much of the exotic behavior present in quantum materials occur in conditions not suitable for practical applications, for example, very low temperatures or high pressures. Understanding why these novel properties emerge may provide insight into overcoming such limitations. One avenue to better our understanding is quantum simulation, in which a highly controllable experimental system is used to directly implement the physics of these quantum materials.In this thesis we build on a new approach to quantum simulation, using hybrid metal-semiconductor island nanostructures. The hybrid structure combines the advantages of both metal and semiconductor nanostructures - sites that behave uniformly and couplings that are highly tunable. Each island can act as a single lattice site, with electrons that may interact with other lattice sites or a surrounding bath of conduction electrons. However, before scaling to lattices where the physics of bulk materials can be replicated, a crucial step is understanding how two such islands interact with each other.To probe the inter-island interaction, we build and study a two-island device, and find that the inter-island interaction arises from a Kondo-like screening of charge states acting as a pseudospin. When each island is also coupled to a single lead via a Kondo interaction, the resulting competition leads to a quantum critical point. We find that this is well described by a double charge Kondo model, and our transport measurements well match numerical renormalization group calculations. In particular, we study how critical behavior is destroyed following a particular universal scaling form when detuning from charge degeneracy, where criticality occurs.

Subject Added Entry-Topical Term  

Islands.

Subject Added Entry-Topical Term  

Phase transitions.

Subject Added Entry-Topical Term  

Physics.

Subject Added Entry-Topical Term  

Electrons.

Subject Added Entry-Topical Term  

Quantum dots.

Subject Added Entry-Topical Term  

High school basketball.

Subject Added Entry-Topical Term  

Atomic physics.

Subject Added Entry-Topical Term  

Quantum physics.

Added Entry-Corporate Name  

Stanford University.

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:643218