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Optical Study of Symmetry Breaking in Two-Dimensional Antiferromagnets- [electronic resource]
Optical Study of Symmetry Breaking in Two-Dimensional Antiferromagnets- [electronic resource]
Detailed Information
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101656
- ISBN
- 9798380327961
- DDC
- 530
- 저자명
- Hwangbo, Kyle.
- 서명/저자
- Optical Study of Symmetry Breaking in Two-Dimensional Antiferromagnets - [electronic resource]
- 발행사항
- [S.l.]: : University of Washington., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(118 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
- 주기사항
- Advisor: Xu, Xiaodong.
- 학위논문주기
- Thesis (Ph.D.)--University of Washington, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약The advent of two-dimensional (2D) materials has paved the way for the discovery and investigation of unique properties that arise from their low dimensionality. But, it also provided an avenue to study and test traditional, theoretical ideas related to long-range ordering in reduced dimensions. In particular, two-dimensional antiferromagnetism underlies many interesting and pertinent phenomena in modern condensed matter physics. However, the absence of net magnetization in systems exhibiting 2D antiferromagnetic order poses significant experimental challenges for their probing. This thesis delves into the captivating emergent optical behaviors in two-dimensional zigzag antiferromagnetic materials of the transition metal phosphorus trichalcogenide family that can be used to study 2D antiferromagnetic behavior. We first showcase zigzag antiferromagnetic order-induced excitons in NiPS3. The photoluminescence (PL) signal exhibits remarkable characteristics, including an exceptionally narrow linewidth and high linear polarization. Intriguingly, the PL intensity and polarization mirror the behavior of the zigzag antiferromagnetic order, vanishing above the Neel temperature. Our findings reveal a direct link between the exciton properties and the presence of antiferromagnetic order. Expanding our optical investigation, we demonstrate the ubiquitous presence of a linear dichroism response in the MPX3 zigzag antiferromagnets, exemplified by FePS3. The reduction of three-fold rotational symmetry to two-fold, induced by magnetic order, manifests as two-fold anisotropy in the optical response. Lastly, we demonstrate the remarkable ability to reversibly tune the three-state Potts nematicity in FePSe3 using strain. Through in-situ strain measurements, we elucidate the electronic nematic phase as the origin of the linear dichroism response. We also unveil strain-controlled nematic domain populations and the manipulation of the nematic phase transition nature. This strain control of the nematic phase provides a window into the nematic susceptibility near the magnetic ordering temperature, offering deeper insights into the behavior of these correlated materials. Through detailed optical experimental investigations, we provide a comprehensive understanding of the interplay between magnetic order, symmetry breaking, and emergent properties in zigzag antiferromagnets.
- 일반주제명
- Electromagnetics.
- 키워드
- Magnetization
- 기타저자
- University of Washington Physics
- 기본자료저록
- Dissertations Abstracts International. 85-03B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520240214101656
■006m o d
■007cr#unu||||||||
■020 ▼a9798380327961
■035 ▼a(MiAaPQ)AAI30635018
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aHwangbo, Kyle.
■24510▼aOptical Study of Symmetry Breaking in Two-Dimensional Antiferromagnets▼h[electronic resource]
■260 ▼a[S.l.]:▼bUniversity of Washington. ▼c2023
■260 1▼aAnn Arbor :▼bProQuest Dissertations & Theses, ▼c2023
■300 ▼a1 online resource(118 p.)
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-03, Section: B.
■500 ▼aAdvisor: Xu, Xiaodong.
■5021 ▼aThesis (Ph.D.)--University of Washington, 2023.
■506 ▼aThis item must not be sold to any third party vendors.
■520 ▼aThe advent of two-dimensional (2D) materials has paved the way for the discovery and investigation of unique properties that arise from their low dimensionality. But, it also provided an avenue to study and test traditional, theoretical ideas related to long-range ordering in reduced dimensions. In particular, two-dimensional antiferromagnetism underlies many interesting and pertinent phenomena in modern condensed matter physics. However, the absence of net magnetization in systems exhibiting 2D antiferromagnetic order poses significant experimental challenges for their probing. This thesis delves into the captivating emergent optical behaviors in two-dimensional zigzag antiferromagnetic materials of the transition metal phosphorus trichalcogenide family that can be used to study 2D antiferromagnetic behavior. We first showcase zigzag antiferromagnetic order-induced excitons in NiPS3. The photoluminescence (PL) signal exhibits remarkable characteristics, including an exceptionally narrow linewidth and high linear polarization. Intriguingly, the PL intensity and polarization mirror the behavior of the zigzag antiferromagnetic order, vanishing above the Neel temperature. Our findings reveal a direct link between the exciton properties and the presence of antiferromagnetic order. Expanding our optical investigation, we demonstrate the ubiquitous presence of a linear dichroism response in the MPX3 zigzag antiferromagnets, exemplified by FePS3. The reduction of three-fold rotational symmetry to two-fold, induced by magnetic order, manifests as two-fold anisotropy in the optical response. Lastly, we demonstrate the remarkable ability to reversibly tune the three-state Potts nematicity in FePSe3 using strain. Through in-situ strain measurements, we elucidate the electronic nematic phase as the origin of the linear dichroism response. We also unveil strain-controlled nematic domain populations and the manipulation of the nematic phase transition nature. This strain control of the nematic phase provides a window into the nematic susceptibility near the magnetic ordering temperature, offering deeper insights into the behavior of these correlated materials. Through detailed optical experimental investigations, we provide a comprehensive understanding of the interplay between magnetic order, symmetry breaking, and emergent properties in zigzag antiferromagnets.
■590 ▼aSchool code: 0250.
■650 4▼aCondensed matter physics.
■650 4▼aElectromagnetics.
■653 ▼aUnique properties
■653 ▼aMagnetization
■653 ▼aPhotoluminescence
■690 ▼a0611
■690 ▼a0607
■71020▼aUniversity of Washington▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g85-03B.
■773 ▼tDissertation Abstract International
■790 ▼a0250
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16934811▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024
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