Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–8 of 8 results
Advanced filters: Author: Gavin K. W. Koon Clear advanced filters

  • Graphene has a centrosymmetric crystal symmetry, which prohibits second-order effects in transport experiments. Yet, giant second-order nonlinear transports can emerge in graphene moiré superlattices at zero magnetic field, originating from the skew scattering of chiral Bloch electrons in the superlattice and giving rise to both longitudinal and transverse nonlinear conductivities under time-reversal symmetry.

    • Pan He
    • Gavin Kok Wai Koon
    • Hyunsoo Yang
    Research
    Nature Nanotechnology
    Volume: 17, P: 378-383

  • Monolayer graphene in the quantum Hall regime exhibits a third-order nonlinear Hall response, which is robust against variations in magnetic field and temperature and provides insights into the interaction of chiral edge states.

    • Pan He
    • Hiroki Isobe
    • Jian Shen
    Research
    Nature Nanotechnology
    Volume: 19, P: 1460-1465

  • Graphene may be set to revolutionize electronics, but its small spin–orbit coupling limits its potential in spintronics. It is now shown, however, that adding hydrogen atoms can greatly enhance the magnetic properties of graphene. This then enabled the observation of the spin Hall effect, essential for controlling spin currents.

    • Jayakumar Balakrishnan
    • Gavin Kok Wai Koon
    • Barbaros Özyilmaz
    Research
    Nature Physics
    Volume: 9, P: 284-287

  • Manipulating spin currents in graphene by the spin–orbit interaction is important for many technological developments. Here, the authors show that the presence of residual metallic adatoms in chemical vapour deposition graphene enhances its spin–orbit coupling by three orders of magnitude.

    • Jayakumar Balakrishnan
    • Gavin Kok Wai Koon
    • Barbaros Özyilmaz
    Research
    Nature Communications
    Volume: 5, P: 1-7

  • Here, authors report spin transport in dual-gated, high-mobility bilayer graphene spin valves. Their comparative study suggests that substrate and contacts are not the key limiting sources for spin relaxation, but rather it pinpoints the role of polymer residues in current devices. Spin transport in bilayer graphene is gate tunable and this allows authors to demonstrate the evidence of magnetic moments which act as spin hot spots. By taking the advantage of their novel device architecture, they demonstrate the complete suppression of the spin signal while a transport gap was induced in these spin valve devices.

    • Ahmet Avsar
    • Ivan Jesus Vera-Marun
    • Barbaros Özyilmaz
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e274

  • An extensive comparative genomic analysis of thermophilic, thermotolerant, and mesophilic fungi genomes is used to define features of thermophily and shows the power of integrating phylogenetic analysis with machine learning and AlphaFold2 to obtain insights into the evolutionary origins of a specific physiology.

    • Andrei S. Steindorff
    • Maria Victoria Aguilar-Pontes
    • Igor V. Grigoriev
    ResearchOpen Access
    Communications Biology
    Volume: 7, P: 1-11