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Helical quantum Hall phase in graphene on SrTiO3 The ground state of charge neutral graphene under perpendicular magnetic field was predicted to be a quantum Hall topological insulator with a ferromagnetic order and spin-filtered, helical edge channels. In most experiments,

Low-Magnetic-Field Regime of a Gate-Defined Constriction in High-Mobility Graphene Louis Veyrat, Anna Jordan, Katrin Zimmermann, Frédéric Gay, Kenji Watanabe, Takashi Taniguchi, Hermann Sellier, and Benjamin Sacépé Nano Letters (2019)  

Collective energy gap of preformed Cooper pairs in disordered superconductors, Nature Physics AOP dec. (2018)

https://arxiv.org/abs/1810.09127

Low-temperature anomaly in disordered superconductors near Bc2 as a vortex-glass property Strongly disordered superconductors in a magnetic field exhibit many characteristic properties of type-II superconductivity—except at low temperatures, where an anomalous linear temperature dependence of the resistive critical field Bc2

Pair-breaking quantum phase transition in superconducting nanowires Quantum phase transitions (QPT) between distinct ground states of matter are widespread phenomena, yet there are only a few experimentally accessible systems where the microscopic mechanism of the transition can be tested and

Collective energy gap of preformed Cooper-pairs in disordered superconductors Thomas Dubouchet, Benjamin Sacépé, Johanna Seidemann, Dan Shahar, Marc Sanquer, Claude Chapelier In most superconductors the transition to the superconducting state is driven by the binding of electrons into Cooper-pairs. The

Extreme Sensitivity of the Superconducting State in Thin Films I. Tamir, A. Benyamini, E. J. Telford, F. Gorniaczyk, A. Doron, T. Levinson, D. Wang, F. Gay, B. Sacépé, J. Hone, K. Watanabe, T. Taniguchi, C. R. Dean, A. N. Pasupathy,

Abstract Topological Josephson junctions designed on the surface of a 3D-topological insulator (TI) harbor Majorana bound states (MBS’s) among a continuum of conventional Andreev bound states. The distinct feature of these MBS’s lies in the 4π-periodicity of their energy-phase relation

See https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.247001