Shot noise on chaotic chiral devices

van der Waals heterostructures based on two-dimensional materials have recently become a very active topic of research in spintronics, both aiming at a fundamental description of spin dephasing processes in nanostructures and as a potential element in spin-based information processing schemes. Here, we theoretically investigate the magnetoconductance of mesoscopic devices built from graphene proximity-coupled to a high spin-orbit coupling material. Through numerically exact tight-binding simulations, we show that the interfacial breaking of inversion symmetry generates robust weak antilocalization even when the z →−z symmetric spin-orbit coupling in the quantum dot dominates over the Bychkov-Rashba interaction. Our findings are interpreted in the light of random matrix theory, which links the observed behavior of quantum interference corrections to a transition from a circular-orthogonal to circular-symplectic ensemble.

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Thermodynamic uncertainty relations in mesoscopic devices

Lucena

Batista

Ramos

2023

Phys. Rev. E

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Shot noise on chaotic chiral devices

Cited by 3 publications

References 51 publications

Noise in Mesoscopic Systems

Noise in Mesoscopic Systems

Effect of proximity-induced spin-orbit coupling in graphene mesoscopic billiards

Thermodynamic uncertainty relations in mesoscopic devices

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