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Proximity coupling of bilayer graphene (BLG) to transition metal dichalcogenides (TMDs) offers a promising route to engineer gate-tunable spin-orbit coupling (SOC) while preserving BLG's exceptional electronic properties. This tunability…

介观与纳米尺度物理 · 物理学 2026-04-13 E. Icking , F. Wörtche , A. W. Cummings , A. Wörtche , K. Watanabe , T. Taniguchi , C. Volk , B. Beschoten , C. Stampfer

We report on a theoretical study of the spin Hall Effect (SHE) and weak antilocal-ization (WAL) in graphene/transition metal dichalcogenide (TMDC) heterostructures, computed through efficient real-space quantum transport methods, and using…

介观与纳米尺度物理 · 物理学 2017-09-08 Jose H. Garcia , Aron W. Cummings , Stephan Roche

In this study, we investigate the weak localization (WL) and weak antilocalization (WAL) effects in twisted bilayer graphene positioned on a hexagonal boron nitride substrate. The bottom graphene layer aligns with the hexagonal boron…

介观与纳米尺度物理 · 物理学 2023-07-12 Hongyi Yan , Haiwen Liu

We investigate the proximity-induced spin-orbit coupling in heterostructures of twisted graphene and monolayers of transition-metal dichalcogenides (TMDCs) MoS$_2$, WS$_2$, MoSe$_2$, and WSe$_2$ from first principles. We identify strain,…

介观与纳米尺度物理 · 物理学 2023-06-05 Thomas Naimer , Klaus Zollner , Martin Gmitra , Jaroslav Fabian

Van der Waals (vdW) heterostructures consisting of bilayer graphene (BLG) encapsulated within monolayers of strong spin-orbit semiconductor WS$_2$ or ferromagnetic semiconductor Cr$_2$Ge$_2$Te$_6$ (CGT), are investigated. By performing…

介观与纳米尺度物理 · 物理学 2021-08-18 Klaus Zollner , Jaroslav Fabian

Weak antilocalization (WAL) effect due to the interference corrections to the conductivity has been studied experimentally in a strained InGaAs/InP quantum well structure. From measurements in tilted magnetic filed, it was shown that both…

介观与纳米尺度物理 · 物理学 2009-11-10 S. A. Studenikin , P. T. Coleridge , P. J. Poole

We demonstrate clear weak anti-localization (WAL) effect arising from induced Rashba spin-orbit coupling (SOC) in WS$_2$-covered single-layer and bilayer graphene devices. Contrary to the uncovered region of a shared single-layer graphene…

介观与纳米尺度物理 · 物理学 2016-09-13 Bowen Yang , Min-Feng Tu , Jeongwoo Kim , Yong Wu , Hui Wang , Jason Alicea , Ruqian Wu , Marc Bockrath , Jing Shi

We calculate the interference correction to the conductivity of doped transition metal dichalcogenide (TMDC) monolayers. Because of the interplay between valley structure and intrinsic spin-orbit coupling (SOC), these materials exhibit a…

介观与纳米尺度物理 · 物理学 2019-05-15 Stefan Ilic , Julia S. Meyer , Manuel Houzet

We report on the investigation of proximity-induced spin-orbit coupling (SOC) in a heterostructure of bilayer graphene (BLG) and tungsten diselenide (WSe$_2$). A BLG quantum dot (QD) in the few-particle regime acts as a sensitive probe for…

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…

介观与纳米尺度物理 · 物理学 2021-03-03 Anderson L. R. Barbosa , Jorge Gabriel G. S. Ramos , Aires Ferreira

Combining graphene with transition metal dichalcogenides (TMDs) leads to enhanced spin-orbit coupling (SOC) in the graphene. The induced SOC has a large effect on the low-energy part of the band structure leading to or stabilizing novel…

Recently, proximity-induced spin-orbit coupling (SOC) has been observed in heterostructures consisting of monolayer graphene (ML-G) and transition metal dichalcogenides (TMDCs) such as WSe$_{2}$. Successful tuning of SOC in…

Van der Waals heterostructures provide a versatile platform for tailoring electronic properties through the integration of two-dimensional materials. Among these combinations, the interaction between bilayer graphene and transition metal…

介观与纳米尺度物理 · 物理学 2024-10-30 M. Masseroni , M. Gull , A. Panigrahi , N. Jacobsen , F. Fischer , C. Tong , J. D. Gerber , M. Niese , T. Taniguchi , K. Watanabe , L. Levitov , T. Ihn , K. Ensslin , H. Duprez

We theoretically study the proximity spin-orbit coupling in graphene on transition-metal dichalcogenides monolayer stacked with arbitrary twist angles. We find that the relative rotation greatly enhances the spin splitting of graphene,…

介观与纳米尺度物理 · 物理学 2019-03-06 Yang Li , Mikito Koshino

We report on measurements of quantized conductance in gate-defined quantum point contacts in bilayer graphene that allow the observation of subband splittings due to spin-orbit coupling. The size of this splitting can be tuned from 40 to 80…

We use a van-der-Waals pickup technique to fabricate different heterostructures containing WSe$_2$(WS$_2$) and graphene. The heterostructures were structured by plasma etching, contacted by one-dimensional edge contacts and a topgate was…

介观与纳米尺度物理 · 物理学 2017-09-14 Tobias Völkl , Tobias Rockinger , Martin Drienovsky , Kenji Watanabe , Takashi Taniguchi , Dieter Weiss , Jonathan Eroms

Large spin-orbital proximity effects have been predicted in graphene interfaced with a transition metal dichalcogenide layer. Whereas clear evidence for an enhanced spin-orbit coupling has been found at large carrier densities, the type of…

Theory of spin-orbit coupling in bilayer graphene is presented. The electronic band structure of the AB bilayer in the presence of spin-orbit coupling and a transverse electric field is calculated from first-principles using the linearized…

介观与纳米尺度物理 · 物理学 2012-03-28 Sergej Konschuh , Martin Gmitra , Denis Kochan , Jaroslav Fabian

Proximity-induced spin-orbit coupling in graphene has led to the observation of intriguing phenomena like time-reversal invariant $\mathbb{Z}_2$ topological phase and spin-orbital filtering effects. An understanding of the effect of…

介观与纳米尺度物理 · 物理学 2022-10-18 Priya Tiwari , Mohit Kumar Jat , Adithi Udupa , Deepa S. Narang , Kenji Watanabe , Takashi Taniguchi , Diptiman Sen , Aveek Bid

The presence of both inversion ($P$) and time-reversal ($T$) symmetries in solids leads to a well-known double degeneracy of the electronic bands (Kramers degeneracy). When the degeneracy is lifted, spin textures can be directly observed in…

介观与纳米尺度物理 · 物理学 2020-03-05 H. Nakamura , D. Huang , J. Merz , E. Khalaf , P. Ostrovsky , A. Yaresko , D. Samal , H. Takagi
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