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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…

Mesoscale and Nanoscale Physics · Physics 2016-09-13 Bowen Yang , Min-Feng Tu , Jeongwoo Kim , Yong Wu , Hui Wang , Jason Alicea , Ruqian Wu , Marc Bockrath , Jing Shi

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…

Mesoscale and Nanoscale Physics · Physics 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

Epitaxial graphene/ferromagnetic metal (Gr/FM) heterostructures deposited onto heavy metals (HM) have been proposed for the realization of novel spintronic devices because of their perpendicular magnetic anisotropy and sizeable…

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,…

Mesoscale and Nanoscale Physics · Physics 2023-06-05 Thomas Naimer , Klaus Zollner , Martin Gmitra , Jaroslav Fabian

The proximity-induced spin-orbit coupling (SOC) in heterostructures of twisted graphene and topological insulators (TIs) Bi$_2$Se$_3$ and Bi$_2$Te$_3$ is investigated from first principles. To build commensurate supercells, we strain…

Mesoscale and Nanoscale Physics · Physics 2023-06-07 Thomas Naimer , Jaroslav Fabian

We investigate the electronic structure of graphene on a series of 2D hexagonal nitride insulators hXN, X = B, Al, and Ga, with DFT calculations. A symmetry-based model Hamiltonian is employed to extract orbital parameters and spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2021-02-18 Klaus Zollner , Aron W. Cummings , Stephan Roche , Jaroslav Fabian

Inducing and controlling spin-orbit coupling (SOC) in graphene is key to create topological states of matter, and for the realization of spintronic devices. Placing graphene onto a transition metal dichalcogenide is currently the most…

We present a DFT-based investigation of the twist-angle dependent proximity spin-orbit coupling (SOC) in graphene/TMDC structures. We find that for Mo-based TMDCs the proximity valley-Zeeman SOC exhibits a maximum at around 15--20{\deg},…

Mesoscale and Nanoscale Physics · Physics 2024-01-09 Klaus Zollner , Simão M. João , Branislav K. Nikolić , Jaroslav Fabian

Spin-orbit coupling (SOC) has played an important role in many topological and correlated electron materials. In graphene-based systems, SOC induced by transition metal dichalcogenide (TMD) at proximity was shown to drive topological states…

We report a systematic study on strong enhancement of spin-orbit interaction (SOI) in graphene driven by transition-metal dichalcogenides (TMDs). Low temperature magnetotoransport measurements of graphene proximitized to different TMDs…

Mesoscale and Nanoscale Physics · Physics 2019-06-12 T. Wakamura , F. Reale , P. Palczynski , M. Q. Zhao , A. T. C. Johnson , S. Guéron , C. Mattevi , A. Ouerghi , H. Bouchiat

The negligible intrinsic spin-orbit coupling (SOC) in graphene can be enhanced by proximity effects in stacked heterostructures of graphene and transition metal dichalcogenides (TMDCs). The composition of the TMDC layer plays a key role in…

Mesoscale and Nanoscale Physics · Physics 2022-09-20 Zahra Khatibi , Stephen R. Power

Graphene supported on a transition metal dichalcogenide substrate offers a novel platform to study the spin transport in graphene in presence of a substrate induced spin-orbit coupling, while preserving its intrinsic charge transport…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Siddhartha Omar , Bart J. van Wees

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,…

Mesoscale and Nanoscale Physics · Physics 2019-03-06 Yang Li , Mikito Koshino

We use a combination of experimental techniques to demonstrate a general occurrence of spin-orbit interaction (SOI) in graphene on transition metal dichalcogenide (TMD) substrates. Our measurements indicate that SOI is ultra-strong and…

Mesoscale and Nanoscale Physics · Physics 2016-11-02 Zhe Wang , Dong-Keun Ki , Jun Yong Khoo , Diego Mauro , Helmuth Berger , Leonid S. Levitov , Alberto F. Morpurgo

We demonstrate strong anisotropic spin-orbit interaction (SOI) in graphene induced by monolayer WS$_2$. Direct comparison between graphene/monolayer WS$_2$ and graphene/bulk WS$_2$ system in magnetotransport measurements reveals that…

Mesoscale and Nanoscale Physics · Physics 2018-04-12 Taro Wakamura , Francesco Reale , Pawel Palczynski , Sophie Guéron , Cecilia Mattevi , Hélène Bouchiat

The development of a spintronics device relies on efficient generation of spin polarized currents and their electric field controlled manipulation. While observation of exceptionally long spin relaxation lengths make graphene an intriguing…

Van der Waals interactions with transition metal dichalcogenides was shown to induce strong spin-orbit coupling (SOC) in graphene, offering great promises to combine large experimental flexibility of graphene with unique tuning capabilities…

Mesoscale and Nanoscale Physics · Physics 2023-10-03 Qing Rao , Wun-Hao Kang , Hongxia Xue , Ziqing Ye , Xuemeng Feng , Kenji Watanabe , Takashi Taniguchi , Ning Wang , Ming-Hao Liu , Dong-Keun Ki

Graphene-based van der Waals heterostructures take advantage of tailoring spin-orbit coupling (SOC) in the graphene layer by proximity effect. At long-wavelength -- saddled by the electronic states near the Dirac points -- the proximitized…

Mesoscale and Nanoscale Physics · Physics 2024-02-22 Wun-Hao Kang , Michael Barth , Aitor Garcia-Ruiz , Alina Mreńca-Kolasińska , Ming-Hao Liu , Denis Kochan

We investigate the electronic dispersion and transport properties of graphene/WSe$_{2}$ heterostructures in the presence of a proximity induced spin-orbit coupling (SOC) using a low-energy Hamiltonian, with different types of symmetry…

Mesoscale and Nanoscale Physics · Physics 2023-07-07 M. Zubair , P. Vasilopoulos , M. Tahir
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