Kinetic Blockade and Filamentary Pair Density Waves in Strain-Engineered Graphene
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866912820306640896 |
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| author | Zhou, Tao |
| author_facet | Zhou, Tao |
| contents | We investigate superconductivity in strain-engineered graphene using a self-consistent Bogoliubov-de Gennes approach. Challenging the paradigm that the high density of states in flat bands universally enhances pairing, we identify a "kinetic blockade" mechanism: strain-induced sublattice polarization segregates electronic states, rendering these singularities inert. Instead, superconductivity emerges as robust filaments at geometric nodes, forming a pair density wave. This state features a sign-reversing order parameter, detectable via impurity-induced zero-energy modes. Our findings reveal a unique geometric origin for filamentary superconductivity, offering new perspectives on strain-tuned quantum phases in Dirac materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_08586 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Kinetic Blockade and Filamentary Pair Density Waves in Strain-Engineered Graphene Zhou, Tao Superconductivity We investigate superconductivity in strain-engineered graphene using a self-consistent Bogoliubov-de Gennes approach. Challenging the paradigm that the high density of states in flat bands universally enhances pairing, we identify a "kinetic blockade" mechanism: strain-induced sublattice polarization segregates electronic states, rendering these singularities inert. Instead, superconductivity emerges as robust filaments at geometric nodes, forming a pair density wave. This state features a sign-reversing order parameter, detectable via impurity-induced zero-energy modes. Our findings reveal a unique geometric origin for filamentary superconductivity, offering new perspectives on strain-tuned quantum phases in Dirac materials. |
| title | Kinetic Blockade and Filamentary Pair Density Waves in Strain-Engineered Graphene |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2601.08586 |