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Showing 1–7 of 7 results
Advanced filters: Author: L. Banszerus Clear advanced filters

  • Graphene has long been considered to be a promising host for spin qubits, however a demonstration of long spin relaxation times for a potential qubit has been lacking. Here, the authors report the electrical measurement of the single-electron spin relaxation time exceeding 200 μs in a bilayer graphene quantum dot.

    • L. Banszerus
    • K. Hecker
    • C. Stampfer
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-6

  • Graphene quantum dots promise applications for spin and valley qubits; however a demonstration of phase coherent oscillations has been lacking. Here the authors report coherent charge oscillations and measurements of coherence times in highly tuneable double quantum dots in bilayer graphene.

    • K. Hecker
    • L. Banszerus
    • C. Stampfer
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • Bilayer graphene allows the realization of electron–hole double-quantum dots that exhibit near-perfect particle–hole symmetry, in which transport occurs via the creation and annihilation of single electron–hole pairs with opposite quantum numbers.

    • L. Banszerus
    • S. Möller
    • C. Stampfer
    Research
    Nature
    Volume: 618, P: 51-56

  • Understanding the interaction between spin and valley degrees of freedom in graphene-based quantum dots underpins their applications in electronics and quantum information. Here, the authors study the low-energy spectrum and resolve the spin-valley coupling in single-electron quantum dots in bilayer graphene.

    • L. Banszerus
    • S. Möller
    • C. Stampfer
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Dirac fermion optics leverages p-n junctions and Klein tunnelling barriers present in materials to implement complex optical functions and devices, including reflectors, collimators, and Dirac fermion microscopes. Here, the authors fabricate Dirac fermion corner reflectors using bottom-gate-defined barriers in hBN-encapsulated graphene, and demonstrate high-frequency operation.

    • H. Graef
    • Q. Wilmart
    • B. Plaçais
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-9

  • Raman spectroscopy has become an invaluable tool for graphene characterisation, yet the nature of the broadening of the Raman 2D line remains unclear. Here, Stampferet al. show that the Raman 2D line width is a measure of nanometre-scale strain variations in graphene on insulating substrates.

    • C. Neumann
    • S. Reichardt
    • C. Stampfer
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-7