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Discovery of Novel Topological Order in Quantum Spin-Orbit Materials
Discovery of Novel Topological Order in Quantum Spin-Orbit Materials
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152708
- ISBN
- 9798384464204
- DDC
- 530
- 서명/저자
- Discovery of Novel Topological Order in Quantum Spin-Orbit Materials
- 발행사항
- [Sl] : Princeton University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 171 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Hasan, M. Zahid.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2024.
- 초록/해제
- 요약The concept of topology in modern physics has revolutionized our understanding of quantum phases of matter. Recent advancements in the topological frontier have been driven by a synergy of state-of-the-art experimental techniques and ingenious theoretical developments. However, the comprehensive classification of topological phases, particularly in the presence of strong electron-matter interactions or coexistent topological orders, is far from completion. In this dissertation, we gain insights into unexplored corners of topology using the powerful technique of scanning tunneling microscopy, which provides subatomic spatial resolution and real-space imaging of the electronic structure. In the first part, I discuss the novel topological charge density wave state in Ta2Se8I, which manifests in a non-trivial edge state ensuring real-space bulk-boundary connectivity This topological state is established as a cousin of the Chern insulator owing to the real-reciprocal space duality. The second part elaborates on a higher-order topological insulator candidate, Bi4Br4, which hosts gapless quantum spin Hall edge states. Due to the large insulating bulk energy gap and robust topology, the helical modes persist up to room temperature, signifying its application potential. In the third part, I consider α-As, a spin-orbit coupling material that exhibits both first and higher-order topological orders simultaneously. The interplay of these topological orders generates an unprecedented hybrid topological quantum state, featuring gapless orientation-dependent step-edge modes. Finally, in the last part of the dissertation, I report on the discovery of stripe charge order in the elemental spin-orbit topological solid, tellurium (Te). In the light of the findings, Te emerges as a highly tunable semiconducting topological material for exploring the interplay between charge order, chirality, and topology. The discovery of novel topological phases through this research will enrich the accessible platforms for engineering next-generation quantum devices.
- 일반주제명
- Physics
- 일반주제명
- Condensed matter physics
- 일반주제명
- Low temperature physics
- 키워드
- Quantum devices
- 키워드
- Modern physics
- 키워드
- Tellurium
- 키워드
- Bulk energy
- 기타저자
- Princeton University Physics
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211152708
■006m o d
■007cr#unu||||||||
■020 ▼a9798384464204
■035 ▼a(MiAaPQ)AAI31488508
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aLitskevich, Maksim.▼0(orcid)0000-0003-3049-6521
■24510▼aDiscovery of Novel Topological Order in Quantum Spin-Orbit Materials
■260 ▼a[Sl]▼bPrinceton University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a171 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Hasan, M. Zahid.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2024.
■520 ▼aThe concept of topology in modern physics has revolutionized our understanding of quantum phases of matter. Recent advancements in the topological frontier have been driven by a synergy of state-of-the-art experimental techniques and ingenious theoretical developments. However, the comprehensive classification of topological phases, particularly in the presence of strong electron-matter interactions or coexistent topological orders, is far from completion. In this dissertation, we gain insights into unexplored corners of topology using the powerful technique of scanning tunneling microscopy, which provides subatomic spatial resolution and real-space imaging of the electronic structure. In the first part, I discuss the novel topological charge density wave state in Ta2Se8I, which manifests in a non-trivial edge state ensuring real-space bulk-boundary connectivity This topological state is established as a cousin of the Chern insulator owing to the real-reciprocal space duality. The second part elaborates on a higher-order topological insulator candidate, Bi4Br4, which hosts gapless quantum spin Hall edge states. Due to the large insulating bulk energy gap and robust topology, the helical modes persist up to room temperature, signifying its application potential. In the third part, I consider α-As, a spin-orbit coupling material that exhibits both first and higher-order topological orders simultaneously. The interplay of these topological orders generates an unprecedented hybrid topological quantum state, featuring gapless orientation-dependent step-edge modes. Finally, in the last part of the dissertation, I report on the discovery of stripe charge order in the elemental spin-orbit topological solid, tellurium (Te). In the light of the findings, Te emerges as a highly tunable semiconducting topological material for exploring the interplay between charge order, chirality, and topology. The discovery of novel topological phases through this research will enrich the accessible platforms for engineering next-generation quantum devices.
■590 ▼aSchool code: 0181.
■650 4▼aPhysics
■650 4▼aCondensed matter physics
■650 4▼aLow temperature physics
■653 ▼aQuantum devices
■653 ▼aModern physics
■653 ▼aElectron-matter interactions
■653 ▼aTellurium
■653 ▼aBulk energy
■690 ▼a0605
■690 ▼a0611
■690 ▼a0598
■71020▼aPrinceton University▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163440▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
