5 citations · 10 across the 11 of their papers we have counts for
11 papers
Fibonacci sequence of twist angles in superconducting multi-layer graphene and hydrogenated graphitic fibers
Nadina Gheorghiu, Charles R. Ebbing, George Y. Panasyuk +1
A range of twist angles between adjacent surfaces/volumes are intrinsic to natural graphite or artificially design in multi-layer graphene. In addition, stacking faults can be crea…
Magneto-structural phase transitions and two-dimensional spin waves in graphite
Nadina Gheorghiu, Charles R. Ebbing, Timothy J. Haugan
We have previously found experimental evidence for several quantum phenomena in oxygen-ion implanted of hydrogenated graphite: ferromagnetism, antiferromagnetism, paramagentism, tr…
Flat-band energy analysis of the temperature-dependent superconducting gap for hydrogenated graphite fibers found from nonlocal electrical conductance experimental data
Nadina Gheorghiu, Charles R. Ebbing, Timothy J. Haugan
Experimental evidence of novel phenomena in hydrogenated graphite fibers is found. An indirect excitonic mechanism is likely leading to a SC state below the temperature Tc = 50 K,…
Magnetism and Superconductivity in Hydrogenated Graphite Foils
Nadina Gheorghiu, Charles R. Ebbing, Timothy J. Haugan
Unique to certain unconventional superconductors is the coexistence of magnetism and superconductivity. We have previously found ferromagnetism and superconductivity in hydrogenate…
Update on the method using nonlocal/noncontact differential conductance experimental data for direct probing Andreev reflections and for extracting the superconducting gap
Nadina Gheorghiu
In our previous work, high-temperature superconductivity (HTSC) was probed for the first time by using electrical differential conductance Gdiff(V) = dI/dV data as obtained from cu…
Boron Content and the Superconducting Critical Temperature of Carbon-Based Materials
Nadina Gheorghiu, Charles R. Ebbing, Timothy J. Haugan
In this paper, we present results on magnetization properties of boron nitride-carbon (BN-C) and boron carbide-carbon (B4C-C) granular mixtures. The temperature-dependent magnetiza…
Electric-field induced strange metal states and possible high-temperature superconductivity in hydrogenated graphitic fibers
Nadina Gheorghiu, Charles R. Ebbing, Timothy J. Haugan
In this work, we have studied the effects from increasing the strength of the applied electric field on the charge transport of hydrogenated graphitic fibers. Resistivity measureme…
Superconductivity in Hydrogenated Graphites
Nadina Gheorghiu, Charles R. Ebbing, Timothy J. Haugan
We report transport and magnetization measurements on graphitic materials that have been hydrogenated after being treated with octane. The temperature-dependent electrical resistiv…
Quantum effects in graphitic materials: Colossal magnetoresistance, Andreev reflections, Little-Parks effect, ferromagnetism, and granular superconductivity
Nadina Gheorghiu, Charles R. Ebbing, Benjamin T. Pierce +1
Unlike the more common local conductance spectroscopy, nonlocal conductance can differentiate between nontopological zero-energy modes localized around inhomogeneities, and true Ma…
Computational physics approaches to light transmission through a twisted nematic liquid crystal slab
Nadina Gheorghiu, George Y. Panasyuk
We consider light propagation through a twisted nematic liquid crystal. At first, an expression for light transmission is obtained using a rather intuitive approach. Secondly, an a…
Electric Nusselt number characterization of electroconvection in nematic liquid crystals
J. T. Gleeson, N. Gheorghiu, E. Plaut
We develop a characterization method of electroconvection structures in a planar nematic liquid crystal layer by a study of the electric current transport. Because the applied pote…