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Ion Cosma Fulga

As seen in: Nature, MDPI, Physical Review B
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Articles

Tuning the topological winding number by rolling up graphene

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By Ying LEE, Yu Zhong, Ion Cosma Fulga
| tu-dresden.de
Nanoscrolls, radial superlattices formed by rolling up a nanomembrane, exhibit distinct electronic and magneto-transport properties compared to their flat counterparts. In this study, we theoretically demonstrate that the conductance can be precisely enhanced N times by rolling up graphene into an N[jls-end-space/]-turn nanoscroll and applying a longitudinal magnetic field.
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Topological nodal i-wave superconductivity in PtBi2 - Nature

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By Oleksandr Suvorov, Andrii Kuibarov, Grigory Shipunov, Saicharan Aswartham, Klaus Koepernik, Carsten Timm, Bernd Büchner, Ion Cosma Fulga, Sergey Borisenko, Setti Thirupathaiah
| Nature Verified
Abstract Most superconducting materials are well understood and conventional—that is, the pairs of electrons that cause the superconductivity by their condensation have the highest possible symmetry. Famous exceptions are the enigmatic high-temperature (high-Tc) cuprate superconductors1. Nodes in their superconducting gap are the fingerprint of their unconventional character and imply superconducting pairing of d-wave symmetry.
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Topological properties of domain walls in antiferromagnetic topological insulators

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By Gabriele Naselli, Materials Research Dresden, Ion Cosma Fulga, Würzburg-Dresden Cluster
| tu-dresden.de
Motivated by the study of stacking faults in weak topological insulators and the observation of magnetic domain walls in MnBi2nTe3n+1, we explore the topological properties of magnetic domain walls in antiferromagnetic topological insulators.
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