Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices
Viscous electron flow exhibits exotic signatures such as superballistic conduction. In order to observe hydrodynamics effects, a 2D device where the current flow is as inhomogeneous as possible is desirable. To this end, we build three antidot graphene superlattices with different hole diameters. We...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-02-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.15.011039 |
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| author | Jorge Estrada-Álvarez Juan Salvador-Sánchez Ana Pérez-Rodríguez Carlos Sánchez-Sánchez Vito Clericò Daniel Vaquero Kenji Watanabe Takashi Taniguchi Enrique Diez Francisco Domínguez-Adame Mario Amado Elena Díaz |
| author_facet | Jorge Estrada-Álvarez Juan Salvador-Sánchez Ana Pérez-Rodríguez Carlos Sánchez-Sánchez Vito Clericò Daniel Vaquero Kenji Watanabe Takashi Taniguchi Enrique Diez Francisco Domínguez-Adame Mario Amado Elena Díaz |
| author_sort | Jorge Estrada-Álvarez |
| collection | DOAJ |
| description | Viscous electron flow exhibits exotic signatures such as superballistic conduction. In order to observe hydrodynamics effects, a 2D device where the current flow is as inhomogeneous as possible is desirable. To this end, we build three antidot graphene superlattices with different hole diameters. We measure their electrical properties at various temperatures and under the effect of a perpendicular magnetic field. We find an enhanced superballistic effect, suggesting the effectiveness of the geometry at bending the electron flow. In addition, superballistic conduction, which is related to a transition from a noncollective to a collective regime of transport, behaves nonmonotonically with the magnetic field. We also analyze the device resistance as a function of the size of the antidot superlattice to find characteristic scaling laws describing the different transport regimes. We prove that the antidot superlattice is a convenient geometry for realizing hydrodynamic flow and provide valuable explanations for the technologically relevant effects of superballistic conduction and scaling laws. |
| format | Article |
| id | doaj-art-903be83d206e4094aa8d3ee007d35ebe |
| institution | DOAJ |
| issn | 2160-3308 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj-art-903be83d206e4094aa8d3ee007d35ebe2025-08-20T03:01:18ZengAmerican Physical SocietyPhysical Review X2160-33082025-02-0115101103910.1103/PhysRevX.15.011039Superballistic Conduction in Hydrodynamic Antidot Graphene SuperlatticesJorge Estrada-ÁlvarezJuan Salvador-SánchezAna Pérez-RodríguezCarlos Sánchez-SánchezVito ClericòDaniel VaqueroKenji WatanabeTakashi TaniguchiEnrique DiezFrancisco Domínguez-AdameMario AmadoElena DíazViscous electron flow exhibits exotic signatures such as superballistic conduction. In order to observe hydrodynamics effects, a 2D device where the current flow is as inhomogeneous as possible is desirable. To this end, we build three antidot graphene superlattices with different hole diameters. We measure their electrical properties at various temperatures and under the effect of a perpendicular magnetic field. We find an enhanced superballistic effect, suggesting the effectiveness of the geometry at bending the electron flow. In addition, superballistic conduction, which is related to a transition from a noncollective to a collective regime of transport, behaves nonmonotonically with the magnetic field. We also analyze the device resistance as a function of the size of the antidot superlattice to find characteristic scaling laws describing the different transport regimes. We prove that the antidot superlattice is a convenient geometry for realizing hydrodynamic flow and provide valuable explanations for the technologically relevant effects of superballistic conduction and scaling laws.http://doi.org/10.1103/PhysRevX.15.011039 |
| spellingShingle | Jorge Estrada-Álvarez Juan Salvador-Sánchez Ana Pérez-Rodríguez Carlos Sánchez-Sánchez Vito Clericò Daniel Vaquero Kenji Watanabe Takashi Taniguchi Enrique Diez Francisco Domínguez-Adame Mario Amado Elena Díaz Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices Physical Review X |
| title | Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices |
| title_full | Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices |
| title_fullStr | Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices |
| title_full_unstemmed | Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices |
| title_short | Superballistic Conduction in Hydrodynamic Antidot Graphene Superlattices |
| title_sort | superballistic conduction in hydrodynamic antidot graphene superlattices |
| url | http://doi.org/10.1103/PhysRevX.15.011039 |
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