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Josephson Effects in the Iron-Based Superconductor FETE1−XSEX
Josephson Effects in the Iron-Based Superconductor FETE1−XSEX
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104830
- ISBN
- 9798293836345
- DDC
- 530
- 서명/저자
- Josephson Effects in the Iron-Based Superconductor FETE1−XSEX
- 발행사항
- [Sl] : University of Maryland, College Park, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 165 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Rolston, Steve;Anlage, Steven M.
- 학위논문주기
- Thesis (Ph.D.)--University of Maryland, College Park, 2025.
- 초록/해제
- 요약The iron-based superconductor FeTe1−xSex has emerged as a promising platform for combining superconductivity and topology in a single system, for the realization of topological quantum computing. Besides this, FeTe1−xSex hosts rich physical phenomena such as S± superconductivity, Majorana bound states, and higher-order topological superconductivity, among others. Despite the interest in superconducting devices based on FeTe1−xSex, there have been relatively few demonstrations of Josephson junctions in FeTe1−xSex-based systems.In this dissertation we measured Josephson effects in a FeTe1−xSex-based device and found three signatures of unconventional Josephson junction behavior. This first signature was the existence of two distinct Josephson diffraction patterns under applied RF irradiation, which likely arises from flux flow and a phase slip line in FeTe1−xSex. The second signature was the emergence of sudden jumps in the DC current at which Shapiro steps arise, as a function of applied RF power. This was measured by mapping dV dI vs DC current and RF power. We provide two potential explanations for this phenomenon based on non-equilibrium superconductivity. The third signature is a minimum critical current at zero magnetic field when RF irradiation is present which resembles the π-Josephson junctions formed as a consequence of multiband superconductivity.
- 일반주제명
- Physics
- 일반주제명
- Applied physics
- 일반주제명
- Condensed matter physics
- 일반주제명
- Quantum physics
- 일반주제명
- Computational physics
- 키워드
- RF irradiation
- 기타저자
- University of Maryland, College Park Physics
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017359074
■00520260202104830
■006m o d
■007cr#unu||||||||
■020 ▼a9798293836345
■035 ▼a(MiAaPQ)AAI32170561
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aDeitemyer, Samuel.
■24510▼aJosephson Effects in the Iron-Based Superconductor FETE1−XSEX
■260 ▼a[Sl]▼bUniversity of Maryland, College Park▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a165 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Rolston, Steve;Anlage, Steven M.
■5021 ▼aThesis (Ph.D.)--University of Maryland, College Park, 2025.
■520 ▼aThe iron-based superconductor FeTe1−xSex has emerged as a promising platform for combining superconductivity and topology in a single system, for the realization of topological quantum computing. Besides this, FeTe1−xSex hosts rich physical phenomena such as S± superconductivity, Majorana bound states, and higher-order topological superconductivity, among others. Despite the interest in superconducting devices based on FeTe1−xSex, there have been relatively few demonstrations of Josephson junctions in FeTe1−xSex-based systems.In this dissertation we measured Josephson effects in a FeTe1−xSex-based device and found three signatures of unconventional Josephson junction behavior. This first signature was the existence of two distinct Josephson diffraction patterns under applied RF irradiation, which likely arises from flux flow and a phase slip line in FeTe1−xSex. The second signature was the emergence of sudden jumps in the DC current at which Shapiro steps arise, as a function of applied RF power. This was measured by mapping dV dI vs DC current and RF power. We provide two potential explanations for this phenomenon based on non-equilibrium superconductivity. The third signature is a minimum critical current at zero magnetic field when RF irradiation is present which resembles the π-Josephson junctions formed as a consequence of multiband superconductivity.
■590 ▼aSchool code: 0117.
■650 4▼aPhysics
■650 4▼aApplied physics
■650 4▼aCondensed matter physics
■650 4▼aQuantum physics
■650 4▼aComputational physics
■653 ▼aSuperconductivity
■653 ▼aQuantum computing
■653 ▼aJosephson effects
■653 ▼aRF irradiation
■653 ▼aJosephson junction behavior
■690 ▼a0605
■690 ▼a0599
■690 ▼a0215
■690 ▼a0611
■690 ▼a0216
■71020▼aUniversity of Maryland, College Park▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0117
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359074▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
