Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866908523029331968 |
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| author | Anderson, Laurel E. Laitinen, Antti Zimmerman, Andrew Werkmeister, Thomas Shackleton, Leyna Kruchkov, Alexander Taniguchi, Takashi Watanabe, Kenji Sachdev, Subir Kim, Philip |
| author_facet | Anderson, Laurel E. Laitinen, Antti Zimmerman, Andrew Werkmeister, Thomas Shackleton, Leyna Kruchkov, Alexander Taniguchi, Takashi Watanabe, Kenji Sachdev, Subir Kim, Philip |
| contents | Disorder at the etched edges of graphene quantum dots (GQD) enables random all-to-all interactions between localized charges in partially-filled Landau levels, providing a potential platform to realize the Sachdev-Ye-Kitaev (SYK) model. We use quantum Hall edge states in the graphene electrodes to measure electrical conductance and thermoelectric power across the GQD. We observe a rapid diminishing of electric conductance fluctuations and slowly decreasing thermoelectric power across the GQD with increasing temperature, consistent with recent theoretical predictions for the SYK regime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_08050 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations Anderson, Laurel E. Laitinen, Antti Zimmerman, Andrew Werkmeister, Thomas Shackleton, Leyna Kruchkov, Alexander Taniguchi, Takashi Watanabe, Kenji Sachdev, Subir Kim, Philip Mesoscale and Nanoscale Physics Strongly Correlated Electrons Disorder at the etched edges of graphene quantum dots (GQD) enables random all-to-all interactions between localized charges in partially-filled Landau levels, providing a potential platform to realize the Sachdev-Ye-Kitaev (SYK) model. We use quantum Hall edge states in the graphene electrodes to measure electrical conductance and thermoelectric power across the GQD. We observe a rapid diminishing of electric conductance fluctuations and slowly decreasing thermoelectric power across the GQD with increasing temperature, consistent with recent theoretical predictions for the SYK regime. |
| title | Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2401.08050 |