Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns
Quasiperiodicity has long been known to be a potential platform to explore exotic phenomena, realizing an intricate middle point between ordered solids and disordered matter. In particular, quasiperiodic structures are promising playgrounds to engineer critical wave functions, a powerful starting po...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2021-03-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.013262 |
| _version_ | 1827285774842724352 |
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| author | Maryam Khosravian J. L. Lado |
| author_facet | Maryam Khosravian J. L. Lado |
| author_sort | Maryam Khosravian |
| collection | DOAJ |
| description | Quasiperiodicity has long been known to be a potential platform to explore exotic phenomena, realizing an intricate middle point between ordered solids and disordered matter. In particular, quasiperiodic structures are promising playgrounds to engineer critical wave functions, a powerful starting point to engineer exotic correlated states. Here we show that systems hosting a quasiperiodic modulation of antiferromagnetism and spin-singlet superconductivity, as realized by atomic chains in twisted van der Waals materials, host a localization-delocalization transition as a function of the coupling strength. Associated with this transition, we demonstrate the emergence of a robust quasiperiodic critical point for arbitrary incommensurate potentials, which appears for generic relative weights of the spin-singlet superconductivity and antiferromagnetism. We show that inclusion of residual electronic interactions leads to an emergent spin-triplet superconducting state, which gets dramatically enhanced at the vicinity of the quasiperiodic critical point. Our results put forward quasiperiodicity as a powerful knob to engineer robust superconducting states, providing an alternative pathway towards artificially designed unconventional superconductors. |
| first_indexed | 2024-04-24T10:20:17Z |
| format | Article |
| id | doaj.art-35aa3c330ec546f38dc45f4591f31991 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:20:17Z |
| publishDate | 2021-03-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-35aa3c330ec546f38dc45f4591f319912024-04-12T17:08:26ZengAmerican Physical SocietyPhysical Review Research2643-15642021-03-013101326210.1103/PhysRevResearch.3.013262Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patternsMaryam KhosravianJ. L. LadoQuasiperiodicity has long been known to be a potential platform to explore exotic phenomena, realizing an intricate middle point between ordered solids and disordered matter. In particular, quasiperiodic structures are promising playgrounds to engineer critical wave functions, a powerful starting point to engineer exotic correlated states. Here we show that systems hosting a quasiperiodic modulation of antiferromagnetism and spin-singlet superconductivity, as realized by atomic chains in twisted van der Waals materials, host a localization-delocalization transition as a function of the coupling strength. Associated with this transition, we demonstrate the emergence of a robust quasiperiodic critical point for arbitrary incommensurate potentials, which appears for generic relative weights of the spin-singlet superconductivity and antiferromagnetism. We show that inclusion of residual electronic interactions leads to an emergent spin-triplet superconducting state, which gets dramatically enhanced at the vicinity of the quasiperiodic critical point. Our results put forward quasiperiodicity as a powerful knob to engineer robust superconducting states, providing an alternative pathway towards artificially designed unconventional superconductors.http://doi.org/10.1103/PhysRevResearch.3.013262 |
| spellingShingle | Maryam Khosravian J. L. Lado Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns Physical Review Research |
| title | Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns |
| title_full | Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns |
| title_fullStr | Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns |
| title_full_unstemmed | Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns |
| title_short | Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns |
| title_sort | quasiperiodic criticality and spin triplet superconductivity in superconductor antiferromagnet moire patterns |
| url | http://doi.org/10.1103/PhysRevResearch.3.013262 |
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