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28 papers · 2 filters
Cooper Pair Splitting by means of Graphene Quantum Dots
Z. B. Tan, D. Cox, T. Nieminen +4
Split Cooper pair is a natural source for entangled electrons which is a basic ingredient for quantum information in solid state. We report an experiment on a superconductor-graphe…
Electronic and transport properties in geometrically disordered graphene antidot lattices
Zheyong Fan, Andreas Uppstu, Ari Harju
A graphene antidot lattice, created by a regular perforation of a graphene sheet, can exhibit a considerable band gap required by many electronics devices. However, deviations from…
Fabrication and Study of Large Area QHE Devices Based on Epitaxial Graphene
S. Novikov, N. Lebedeva, K. Pierz +1
Quantum Hall effect (QHE) devices based on epitaxial graphene films grown on SiC were fabricated and studied for development of the QHE resistance standard. The graphene-metal cont…
Charge-noise tolerant exchange gates of singlet-triplet qubits in asymmetric double quantum dots
Tuukka Hiltunen, Hendrik Bluhm, Sebastian Mehl +1
In the semi-conductor double quantum dot singlet-triplet qubit architecture, the decoherence caused by the qubit's charge environment poses a serious obstacle in the way towards la…
Emergent geometry experienced by fermions in graphene in the presence of dislocations
G. E. Volovik, M. A. Zubkov
In graphene in the presence of strain the elasticity theory metric naturally appears. However, this is not the one experienced by fermionic quasiparticles. Fermions propagate in cu…
Intermolecular contrast in atomic force microscopy images without intermolecular bonds
Sampsa K. Häm"aläinen, Nadine van der Heijden, Joost van der Lit +3
Intermolecular features in atomic force microscopy (AFM) images of organic molecules have been ascribed to intermolecular bonds. A recent theoretical study [P. Hapala et al., Phys.…