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4 papers · 1 filter
Magnetic Impurities in Graphene
F. M. Hu, Tianxing Ma, Hai-Qing Lin +1
We used a quantum Monte Carlo method to study the magnetic impurity adatoms on graphene. We found that by tuning the chemical potential we could switch the values of the impurity's…
Impact of lithium composition on the thermoelectric properties of the layered cobalt oxide system LixCoO2
T. Motohashi, Y. Sugimoto, Y. Masubuchi +5
Thermoelectric properties of the layered cobalt oxide system LixCoO2 were investigated in a wide range of Li composition, 0.98 >= x >= 0.35. Single-phase bulk samples of LixCoO2 we…
Flat band in the core of topological defects: bulk-vortex correspondence in topological superfluids with Fermi points
G. E. Volovik
We discuss the dispersionless spectrum with zero energy in the linear topological defects - vortices. The flat band emerges inside the vortex living in the bulk medium containing t…
Dimensional crossover in topological matter: Evolution of the multiple Dirac point in the layered system to the flat band on the surface
Tero T. Heikkilä, G. E. Volovik
We consider the dimensional crossover in the topological matter, which involves the transformation of different types of topologically protected zeroes in the fermionic spectrum. I…