Identification of odd-frequency superconducting pairing in Josephson junctions
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
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| _version_ | 1866910529874821120 |
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| author | Pal, Subhajit Mukhopadhyay, Aabir Adak, Vivekananda Das, Sourin |
| author_facet | Pal, Subhajit Mukhopadhyay, Aabir Adak, Vivekananda Das, Sourin |
| contents | Optimal choice of spin polarization enables electron injection into the helical edge state at a precise position, despite the uncertainty principle, permitting access to specific nonlocal Green's functions. We show, within 1D effective description, that this fact facilitates a direct identification of odd-frequency pairing through parity measurement (under frequency reversal) of the nonlocal differential conductance in a setup comprising the Josephson junction on the helical edge state of a 2D topological insulator with two spin-polarized probes tunnel-coupled to the junction region. A 2D numerical simulation has also been conducted to confirm theoretical predictions as well as to demonstrate the experimental feasibility of the proposal. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_14297 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Identification of odd-frequency superconducting pairing in Josephson junctions Pal, Subhajit Mukhopadhyay, Aabir Adak, Vivekananda Das, Sourin Mesoscale and Nanoscale Physics Superconductivity Optimal choice of spin polarization enables electron injection into the helical edge state at a precise position, despite the uncertainty principle, permitting access to specific nonlocal Green's functions. We show, within 1D effective description, that this fact facilitates a direct identification of odd-frequency pairing through parity measurement (under frequency reversal) of the nonlocal differential conductance in a setup comprising the Josephson junction on the helical edge state of a 2D topological insulator with two spin-polarized probes tunnel-coupled to the junction region. A 2D numerical simulation has also been conducted to confirm theoretical predictions as well as to demonstrate the experimental feasibility of the proposal. |
| title | Identification of odd-frequency superconducting pairing in Josephson junctions |
| topic | Mesoscale and Nanoscale Physics Superconductivity |
| url | https://arxiv.org/abs/2311.14297 |