192 citations · 274 across the 7 of their papers we have counts for
7 papers
Global room-temperature superconductivity in graphite
Y. V. Kopelevich, J. H. S. Torres, R. Ricardo da Silva +3
Room temperature superconductivity under normal conditions has been a major challenge of physics and material science since its very discovery. Here we report the global room-tempe…
Extraordinary magnetoresistance in graphite: experimental evidence for the time-reversal symmetry breaking
Y. Kopelevich, R. R. da Silva, A. S. Alexandrov
The ordinary magnetoresistance (MR) of doped semiconductors is positive and quadratic in a low magnetic field, B, as it should be in the framework of the Boltzmann kinetic theory o…
Possible superconductivity in multi-layer-graphene by application of a gate voltage
A. Ballestar, P. Esquinazi, J. Barzola-Quiquia +4
The carrier density in tens of nanometers thick graphite samples (multi-layer-graphene, MLG) has been modified by applying a gate voltage () perpendicular to the graphene plan…
Local and Global Superconductivity in Bismuth
Luis A. Baring, Robson R. da Silva, Yakov Kopelevich
We performed magnetization M(H,T) and magnetoresistance R(T,H) measurements on powdered (grain size ~ 149 micrometers) as well as highly oriented rhombohedral (A7) bismuth (Bi) sam…
Negative c-axis magnetoresistance in graphite
Y. Kopelevich, R. R. da Silva, J. C. Medina Pantoja +1
We have studied the c-axis interlayer magnetoresistance (ILMR), R_c(B) in graphite. The measurements have been performed on strongly anisotropic highly oriented pyrolytic graphite…
Possible Fractional Quantum Hall Effect in Graphite
Y. Kopelevich, B. Raquet, M. Goiran +6
Measurements of basal plane longitudinal rho_b(B) and Hall rho_H(B) resistivities were performed on highly oriented pyrolytic graphite (HOPG) samples in pulsed magnetic field up to…
Reentrant Metallic Behavior of Graphite in the Quantum Limit
Y. Kopelevich, J. H. S. Torres, R. R. da Silva +3
Magnetotransport measurements performed on several well-characterized highly oriented pyrolitic graphite and single crystalline Kish graphite samples reveal a reentrant metallic be…