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Illuminating Molecular Spin Relaxation Mechanisms Through Ligand Field Theory and Physical Inorganic Spectroscopy
Illuminating Molecular Spin Relaxation Mechanisms Through Ligand Field Theory and Physical Inorganic Spectroscopy
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104749
- ISBN
- 9798290654782
- DDC
- 541.33
- 서명/저자
- Illuminating Molecular Spin Relaxation Mechanisms Through Ligand Field Theory and Physical Inorganic Spectroscopy
- 발행사항
- [Sl] : California Institute of Technology, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 245 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Hadt, Ryan.
- 학위논문주기
- Thesis (Ph.D.)--California Institute of Technology, 2025.
- 초록/해제
- 요약Electron spin relaxation is a fundamental process in paramagnetic molecules, and successful development of molecular quantum bits (qubits) for quantum information science hinges on suppressing the rate of spin relaxation. While the relaxation process has been studied since the early 20th century, no consensus has been reached regarding the physical relaxation mechanism in S = 1/2 transition metal molecules. Practical guidelines for designing molecules with slow spin relaxation have likewise remained obscure. This thesis describes the use of ligand field theory and physical inorganic spectroscopy techniques to shed new light on molecular spin relaxation mechanisms, connecting relaxation rates to chemical bonding and transition metal electronic structure. Part 1 (Chapters 2-4) details the use of electron paramagnetic resonance (EPR), magnetic circular dichroism (MCD), and resonance Raman (rR) to interrogate the origins of spin relaxation. Experimental spectroscopic results are analyzed within the context of a model based on group theory, yielding a paradigm referred to as ligand field spin dynamics. Part 2 (Chapters 5-7) describes the development of a new experimental observable, T1anisotropy, as a novel approach for distinguishing between competing theoretical spin relaxation models. Part 3 (Chapters 8-10) shows how the insights of ligand field spin dynamics and T1anisotropy have been leveraged to rationally design molecules with slow spin relaxation and other desirable spin dynamics properties. This thesis establishes a framework for controlling the physical process of spin relaxation through distinctly chemical molecular design principles.
- 일반주제명
- Aqueous solutions
- 일반주제명
- Electrons
- 일반주제명
- Inorganic chemistry
- 일반주제명
- Symmetry
- 일반주제명
- Chemistry
- 일반주제명
- Copper
- 일반주제명
- Anisotropy
- 일반주제명
- Crystallography
- 기타저자
- California Institute of Technology Chemistry and Chemical Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104749
■006m o d
■007cr#unu||||||||
■020 ▼a9798290654782
■035 ▼a(MiAaPQ)AAI32151325
■035 ▼a(MiAaPQ)Caltech17234
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a541.33
■1001 ▼aKazmierczak, Nathanael Parker.
■24510▼aIlluminating Molecular Spin Relaxation Mechanisms Through Ligand Field Theory and Physical Inorganic Spectroscopy
■260 ▼a[Sl]▼bCalifornia Institute of Technology▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a245 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Hadt, Ryan.
■5021 ▼aThesis (Ph.D.)--California Institute of Technology, 2025.
■520 ▼aElectron spin relaxation is a fundamental process in paramagnetic molecules, and successful development of molecular quantum bits (qubits) for quantum information science hinges on suppressing the rate of spin relaxation. While the relaxation process has been studied since the early 20th century, no consensus has been reached regarding the physical relaxation mechanism in S = 1/2 transition metal molecules. Practical guidelines for designing molecules with slow spin relaxation have likewise remained obscure. This thesis describes the use of ligand field theory and physical inorganic spectroscopy techniques to shed new light on molecular spin relaxation mechanisms, connecting relaxation rates to chemical bonding and transition metal electronic structure. Part 1 (Chapters 2-4) details the use of electron paramagnetic resonance (EPR), magnetic circular dichroism (MCD), and resonance Raman (rR) to interrogate the origins of spin relaxation. Experimental spectroscopic results are analyzed within the context of a model based on group theory, yielding a paradigm referred to as ligand field spin dynamics. Part 2 (Chapters 5-7) describes the development of a new experimental observable, T1anisotropy, as a novel approach for distinguishing between competing theoretical spin relaxation models. Part 3 (Chapters 8-10) shows how the insights of ligand field spin dynamics and T1anisotropy have been leveraged to rationally design molecules with slow spin relaxation and other desirable spin dynamics properties. This thesis establishes a framework for controlling the physical process of spin relaxation through distinctly chemical molecular design principles.
■590 ▼aSchool code: 0037.
■650 4▼aAqueous solutions
■650 4▼aElectrons
■650 4▼aInorganic chemistry
■650 4▼aSymmetry
■650 4▼aChemistry
■650 4▼aCopper
■650 4▼aAnisotropy
■650 4▼aCrystallography
■690 ▼a0485
■690 ▼a0488
■71020▼aCalifornia Institute of Technology▼bChemistry and Chemical Engineering.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0037
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358772▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
