Direkt zum Inhalt

Diese Website setzt ausschließlich technisch notwendige Cookies ein, die spätestens mit dem Schließen Ihres Browsers gelöscht werden. Wenn Sie mehr über Cookies erfahren möchten, klicken Sie bitte auf die Datenschutzerklärung.

DE EN
Anmelden
Logo, zur Startseite
  1. Sie sind hier:
  2. Probing chiral symmetry with a topological domain wall sensor
...

    Datenpaket: Probing chiral symmetry with a topological domain wall sensor

    • RADAR-Metadaten
    • Inhalt
    • Statistiken
    • Technische Metadaten
    Alternativer Identifier:
    -
    Verwandter Identifier:
    (Is Published In) 10.1016/j.newton.2025.100009 - DOI
    Ersteller/in:
    Odobesko, Artem https://orcid.org/0000-0003-3414-067X [University of Würzburg]
    Beitragende:
    (Project Member)
    Bode, Matthias https://orcid.org/0000-0001-7514-5560 [University of Würzburg]

    (Project Member)
    Thomale, Ronny https://orcid.org/0000-0002-3979-8836 [University of Würzburg]
    Titel:
    Probing chiral symmetry with a topological domain wall sensor
    Weitere Titel:
    -
    Beschreibung:
    (Abstract) Chiral symmetry is a fundamental property with profound implications for the characteristics of elementary particles, that implies a spectral symmetry (i.e. E -> -E ) in their dispersion relation. In condensed matter physics, chiral symmetry is often associated with superconducto... Chiral symmetry is a fundamental property with profound implications for the characteristics of elementary particles, that implies a spectral symmetry (i.e. E -> -E ) in their dispersion relation. In condensed matter physics, chiral symmetry is often associated with superconductors or materials hosting Dirac fermions, such as graphene or topological insulators. In these contexts, chiral symmetry is an emergent low-energy property, accompanied by an emergent spectral symmetry. However, since the presence of spectral symmetry does not necessarily imply chiral symmetry, a key question arises: how can these two properties be experimentally differentiated? In this study, we demonstrate that a system with preserved spectral symmetry can reveal underlying broken chiral symmetry through the presence of topological defects. Our findings shows that these defects induce a spectral imbalance in the Landau level spectrum, providing direct evidence of symmetry alteration at topological domain walls. Using high-resolution scanning tunneling microscopy and spectroscopy, we demonstrate the intricate interplay between chiral and translational symmetry, which is broken at step edges in topological crystalline insulator Pb$_{1-x}$Sn$_x$Se. The chiral symmetry breaking leads to a shift in the guiding center coordinates of the Landau orbitals near the step edge, thus resulting in a distinct chiral flow of the spectral density of Landau levels. This study underscores the pivotal role of topological defects as sensitive probes for detecting hidden symmetries, offering insights into emergent phenomena with implications for fundamental physics.

    Chiral symmetry is a fundamental property with profound implications for the characteristics of elementary particles, that implies a spectral symmetry (i.e. E -> -E ) in their dispersion relation. In condensed matter physics, chiral symmetry is often associated with superconductors or materials hosting Dirac fermions, such as graphene or topological insulators. In these contexts, chiral symmetry is an emergent low-energy property, accompanied by an emergent spectral symmetry. However, since the presence of spectral symmetry does not necessarily imply chiral symmetry, a key question arises: how can these two properties be experimentally differentiated? In this study, we demonstrate that a system with preserved spectral symmetry can reveal underlying broken chiral symmetry through the presence of topological defects. Our findings shows that these defects induce a spectral imbalance in the Landau level spectrum, providing direct evidence of symmetry alteration at topological domain walls. Using high-resolution scanning tunneling microscopy and spectroscopy, we demonstrate the intricate interplay between chiral and translational symmetry, which is broken at step edges in topological crystalline insulator Pb$_{1-x}$Sn$_x$Se. The chiral symmetry breaking leads to a shift in the guiding center coordinates of the Landau orbitals near the step edge, thus resulting in a distinct chiral flow of the spectral density of Landau levels. This study underscores the pivotal role of topological defects as sensitive probes for detecting hidden symmetries, offering insights into emergent phenomena with implications for fundamental physics.

    Zeige alles Zeige Markdown

    (Other) We acknowledges funding supported by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through SFB 1170 Project No. 258499086 (project C02) and the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter – ct.qmat (EXC 2147, Project No. 390858490). T.N. a... We acknowledges funding supported by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through SFB 1170 Project No. 258499086 (project C02) and the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter – ct.qmat (EXC 2147, Project No. 390858490). T.N. acknowledges support from the Swiss National Science Foundation through a consolidator grant (iTQC, TMCG-2-213805). R.T. and T.N. acknowledge support from the FOR 5249 (QUAST) led by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), in Switzerland funded by the Swiss National Science Foundation (Project 200021E-198011). G.W. acknowledges funding from the University of Zurich postdoc grant FK-23-134. The work of J.K. and T.S. was supported by the Foundation for Polish Science project “MagTop” no. FENG.02.01-IP.05-0028/23, co-financed by the European Union from the funds of Priority 2 of the European Funds for a Smart Economy Program 2021–2027 (FENG).

    We acknowledges funding supported by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through SFB 1170 Project No. 258499086 (project C02) and the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter – ct.qmat (EXC 2147, Project No. 390858490). T.N. acknowledges support from the Swiss National Science Foundation through a consolidator grant (iTQC, TMCG-2-213805). R.T. and T.N. acknowledge support from the FOR 5249 (QUAST) led by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), in Switzerland funded by the Swiss National Science Foundation (Project 200021E-198011). G.W. acknowledges funding from the University of Zurich postdoc grant FK-23-134. The work of J.K. and T.S. was supported by the Foundation for Polish Science project “MagTop” no. FENG.02.01-IP.05-0028/23, co-financed by the European Union from the funds of Priority 2 of the European Funds for a Smart Economy Program 2021–2027 (FENG).

    Zeige alles
    Schlagworte:
    chiral symmetry
    topological defects
    topological crystalline insulators
    Landau levels
    Dirac fermions
    Zugehörige Informationen:
    -
    Sprache:
    Englisch
    Herausgeber/in:
    University of Würzburg
    Erstellungsjahr:
    2024
    Fachgebiet:
    Physics
    Objekttyp:
    (Dataset) STM and STS raw measurements data
    Datenquelle:
    (Instrument) STM
    Verwendete Software:
    Software für Datenerhebung
    Software:
    Nanonis STM controler SPECS - 4.0
    Alternative Software:
    -
    Verwendete Software:
    Software für Datenbearbeitung
    Software:
    WSxM - 5.0
    Alternative Software:
    Python - 3.13.0
    Verwendete Software:
    Software für Datenbetrachtung
    Software:
    Nanonis Scan Viewer - 4.0
    Alternative Software:
    Nanonis Data Viewer - 4.0
    Datenverarbeitung:
    The raw data was obtained and plotted in the same manner as presented in the paper, with minimal averaging applied to smooth the noise. The second derivative, d²I/dU², shown in the paper was calculated from the acquired dI/dU spectra using the Lock-In technique (see main text for details), averaged over an 8×Ubias window to improve the signal-to-noise ratio without losing key spectral features. All data was analyzed using a Python script, which is also included in the archive.
    Erscheinungsjahr:
    2025
    Rechteinhaber/in:
    Odobesko, Artem https://orcid.org/0000-0003-3414-067X

    Bode, Matthias https://orcid.org/0000-0001-7514-5560
    Förderung:
    Deutsche Forschungsgemeinschaft - (Komplexität und Topologie in Quantenmaterialien (CT.QMAT)) 390858490
    Deutsche Forschungsgemeinschaft - (Ultrahochauflösende Oberflächenstudien an topologischen Supraleitern) 258499086
    Zeige alles Zeige weniger
    Name Speichervolumen Metadaten Upload Aktion
    Status:
    Publiziert
    Eingestellt von:
    1e329b082ceddbc68d896fa4e3f2ea96
    Erstellt am:
    2024-12-19
    Archivierungsdatum:
    2025-05-19
    Archivgröße:
    182,0 MB
    Archiversteller:
    dd7b509482ad0a11773b217cbbcdf32f
    Archiv-Prüfsumme:
    c1fbff920715571fa372099227b4d686 (MD5)
    Embargo-Zeitraum:
    -

    Standort

    • Würzburg, GERMANY
    DOI: 10.58160/e9470w3nu2w18n45
    Publikationsdatum: 2025-05-19
    Datenpaket herunterladen
    Herunterladen (182,0 MB)

    Metadaten herunterladen
    Statistik
    0
    Views
    0
    Downloads
    Lizenz für das Datenpaket
    Dieses Werk ist lizenziert unter
    CC BY 4.0
    CC icon
    Datenpaket zitieren
    Odobesko, Artem (2025): Probing chiral symmetry with a topological domain wall sensor. University of Würzburg. DOI: 10.58160/e9470w3nu2w18n45
    • Über das Repository
    • Datenschutzerklärung
    • Nutzungsbedingungen
    • Impressum
    • Erklärung zur Barrierefreiheit
    powered by RADAR
    1.22.5 (f) / 1.15.6 (b) / 1.22.3 (i)

    §1 Erschöpfung des Nutzungsverhältnisses

    1. Das Nutzungsverhältnis zwischen Datennutzerinnen und Datennutzern und der JMU ist begrenzt auf den Download von Datenpaketen oder Metadaten. Die Nutzungsrechte an den Daten richten sich dabei nach den gewählten Lizenzbedingungen und weiteren Vorgaben der Datengeberinnen und Datengeber. Die JMU behält sich das Recht vor, die Nutzung des Repositoriums einzuschränken oder den Dienst einzustellen.
    2. Die JMU übernimmt keine Haftung oder Gewährleistung für Richtigkeit, Aktualität und Zuverlässigkeit der bereitgestellten Inhalte.

    §2 Datenerhebung

    1. Personenbezogene Daten der Nutzerinnen und Nutzer werden nur erhoben, sofern dies für den Betrieb von WueData oder zur Authentifizierung notwendig ist.
    2. Zur statistischen Auswertung der Besucherzugriffe werden in anonymisierter Form Protokolldaten erhoben.
    3. Die Verarbeitung personenbezogener und statistischer Daten erfolgt gemäß DSGVO. Weitere Informationen finden Sie in der Datenschutzerklärung.

    §3 Kosten

    1. Für die Recherche in WueData und den Download von Datenpaketen fallen keine Kosten für die Datennutzerinnen und Datennutzer an.