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Charge Density Wave Dynamics in Transition Metal Dichalcogenides Probed with Ultrafast Electron Diffraction and X-Ray Photon Correlation Spectroscopy
Charge Density Wave Dynamics in Transition Metal Dichalcogenides Probed with Ultrafast Electron Diffraction and X-Ray Photon Correlation Spectroscopy
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105419
- ISBN
- 9798297684997
- DDC
- 530
- 서명/저자
- Charge Density Wave Dynamics in Transition Metal Dichalcogenides Probed with Ultrafast Electron Diffraction and X-Ray Photon Correlation Spectroscopy
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 213 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-04, Section: B.
- 주기사항
- Advisor: Kogar, Anshul.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약Charge density waves (CDWs) are electronic modulations that occur at low temperature in many crystalline materials; they underlie fascinating dynamic behaviors such as collective sliding transport and narrow-band noise, and engage in various interactions with superconductivity. CDWs can be dynamically manipulated with light, opening new possibilities for materials control and the realization of hidden non-equilibrium phases. This dissertation investigates CDW dynamics using ultrafast electron diffraction (UED) and X-ray photon correlation spectroscopy (XPCS). A UED beamline with sub-picosecond time resolution was developed for this purpose. Using this instrument, UED experiments reveal a light-induced topological transition to a hidden liquid CDW phase in 1T-TaS2 and a coupling between CDW order and a shear structural instability in VTe2. XPCS measurements of Cu-intercalated 1T-TiSe2 uncover slow phase-fluctuation dynamics that drive the system into a metastable, short-range ordered state coexisting with superconductivity. Together, these studies demonstrate the rich non-equilibrium behavior of CDWs and the utility of time-resolved techniques in uncovering their dynamics.
- 일반주제명
- Condensed matter physics
- 일반주제명
- Applied physics
- 일반주제명
- Materials science
- 일반주제명
- Optics
- 기타저자
- University of California, Los Angeles Physics 0666
- 기본자료저록
- Dissertations Abstracts International. 87-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
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■020 ▼a9798297684997
■035 ▼a(MiAaPQ)AAI32278365
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aSutter, Thomas M.
■24510▼aCharge Density Wave Dynamics in Transition Metal Dichalcogenides Probed with Ultrafast Electron Diffraction and X-Ray Photon Correlation Spectroscopy
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a213 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-04, Section: B.
■500 ▼aAdvisor: Kogar, Anshul.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aCharge density waves (CDWs) are electronic modulations that occur at low temperature in many crystalline materials; they underlie fascinating dynamic behaviors such as collective sliding transport and narrow-band noise, and engage in various interactions with superconductivity. CDWs can be dynamically manipulated with light, opening new possibilities for materials control and the realization of hidden non-equilibrium phases. This dissertation investigates CDW dynamics using ultrafast electron diffraction (UED) and X-ray photon correlation spectroscopy (XPCS). A UED beamline with sub-picosecond time resolution was developed for this purpose. Using this instrument, UED experiments reveal a light-induced topological transition to a hidden liquid CDW phase in 1T-TaS2 and a coupling between CDW order and a shear structural instability in VTe2. XPCS measurements of Cu-intercalated 1T-TiSe2 uncover slow phase-fluctuation dynamics that drive the system into a metastable, short-range ordered state coexisting with superconductivity. Together, these studies demonstrate the rich non-equilibrium behavior of CDWs and the utility of time-resolved techniques in uncovering their dynamics.
■590 ▼aSchool code: 0031.
■650 4▼aCondensed matter physics
■650 4▼aApplied physics
■650 4▼aMaterials science
■650 4▼aOptics
■653 ▼aCharge density waves
■653 ▼aLight-induced dynamics
■653 ▼aTransition metal dichalcogenides
■653 ▼aUltrafast electron diffraction
■653 ▼aX-ray photon correlation spectroscopy
■690 ▼a0611
■690 ▼a0752
■690 ▼a0794
■690 ▼a0215
■71020▼aUniversity of California, Los Angeles▼bPhysics 0666.
■7730 ▼tDissertations Abstracts International▼g87-04B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360286▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
