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Scanning NV Magnetometry for Investigating Electron Transport in Materials
Scanning NV Magnetometry for Investigating Electron Transport in Materials
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104659
- ISBN
- 9798291538975
- DDC
- 530
- 저자명
- Yang, Daipeng.
- 서명/저자
- Scanning NV Magnetometry for Investigating Electron Transport in Materials
- 발행사항
- [Sl] : University of California, Santa Barbara, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 180 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Jayich, Ania Bleszynski.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Santa Barbara, 2025.
- 초록/해제
- 요약This dissertation advances scanning nitrogen-vacancy (NV) center magnetometry as a state-of-the-art quantum sensing platform while deploying it to explore frontier condensed matter physics. We pursue parallel tracks of technological innovation and fundamental physics investigations. On the technological front, we develop a simplified all-diamond fabrication process that enhances probe robustness; a custom high-temperature annealing furnace that optimizes NV center creation; spin-to-charge readout implementation that improves measurement speed by an order of magnitude; and critical vacuum system modifications that extend probe lifetime to many months. These innovations collectively transform scanning NV magnetometry into a more powerful and reliable tool for nanoscale magnetic sensing. Leveraging these enhanced capabilities, we investigate electron transport across multiple material systems. In bilayer graphene, we directly visualize current vortices that evolve with temperature, carrier density, and displacement field-revealing the complex transitions between transport regimes. Furthermore, we demonstrate a novel approach to independently quantify momentum-relaxing and momentum-conserving scattering processes through single spin relaxometry, overcoming a key limitation of conventional imaging methods. The temperature independence of the momentum-conserving length we observe challenges conventional electron-electron scattering models. Lastly, investigations in Kagome superconductors and FeSe/STO demonstrate the versatility of our technique for studying new materials. Together, these technical advances and physics investigations establish scanning NV magnetometry as a uniquely powerful platform for exploring electron transport in materials.
- 일반주제명
- Physics
- 일반주제명
- Quantum physics
- 일반주제명
- Nanotechnology
- 키워드
- Hydrodynamics
- 키워드
- Quantum defect
- 키워드
- Quantum sensing
- 기타저자
- University of California, Santa Barbara Physics
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104659
■006m o d
■007cr#unu||||||||
■020 ▼a9798291538975
■035 ▼a(MiAaPQ)AAI32116045
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aYang, Daipeng.
■24510▼aScanning NV Magnetometry for Investigating Electron Transport in Materials
■260 ▼a[Sl]▼bUniversity of California, Santa Barbara▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a180 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Jayich, Ania Bleszynski.
■5021 ▼aThesis (Ph.D.)--University of California, Santa Barbara, 2025.
■520 ▼aThis dissertation advances scanning nitrogen-vacancy (NV) center magnetometry as a state-of-the-art quantum sensing platform while deploying it to explore frontier condensed matter physics. We pursue parallel tracks of technological innovation and fundamental physics investigations. On the technological front, we develop a simplified all-diamond fabrication process that enhances probe robustness; a custom high-temperature annealing furnace that optimizes NV center creation; spin-to-charge readout implementation that improves measurement speed by an order of magnitude; and critical vacuum system modifications that extend probe lifetime to many months. These innovations collectively transform scanning NV magnetometry into a more powerful and reliable tool for nanoscale magnetic sensing. Leveraging these enhanced capabilities, we investigate electron transport across multiple material systems. In bilayer graphene, we directly visualize current vortices that evolve with temperature, carrier density, and displacement field-revealing the complex transitions between transport regimes. Furthermore, we demonstrate a novel approach to independently quantify momentum-relaxing and momentum-conserving scattering processes through single spin relaxometry, overcoming a key limitation of conventional imaging methods. The temperature independence of the momentum-conserving length we observe challenges conventional electron-electron scattering models. Lastly, investigations in Kagome superconductors and FeSe/STO demonstrate the versatility of our technique for studying new materials. Together, these technical advances and physics investigations establish scanning NV magnetometry as a uniquely powerful platform for exploring electron transport in materials.
■590 ▼aSchool code: 0035.
■650 4▼aPhysics
■650 4▼aQuantum physics
■650 4▼aNanotechnology
■653 ▼aElectron transport
■653 ▼aHydrodynamics
■653 ▼aQuantum defect
■653 ▼aQuantum sensing
■690 ▼a0605
■690 ▼a0599
■690 ▼a0652
■71020▼aUniversity of California, Santa Barbara▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0035
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358417▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
