13 citations · 19 across the 7 of their papers we have counts for
7 papers
Intrinsic graphene field effect transistor on amorphous carbon films
Savcho Tinchev
Fabrication of graphene field effect transistor is described which uses an intrinsic graphene on the surface of as deposited hydrogenated amorphous carbon films. Ambipolar characte…
Surface resistivity of hydrogenated amorphous carbon films: Existence of intrinsic graphene on its surface
Savcho Tinchev
Surface resistivity of hydrogenated amorphous carbon films was measured as a function of the applied electrical field. The measured dependence shows a sharp ambipolar peak near zer…
Low temperature crystallization of diamond-like carbon films to graphene by low energy plasma surface treatment
Savcho Tinchev
Plasma surface modification was used to fabricate graphene on the top of insulating diamond-like carbon films. It is shown that by a combination of pulsed argon plasma treatment an…
Interference effects on the ID/IG ratio of the Raman spectra of diamond-like carbon thin films
Elitza Petrova, Savcho Tinchev, Petranka Nikolova
Ratio of the intensity of D- Raman peak and G- Raman peak (ID/IG) is often used for characterization of diamond-like carbon films, for example to estimate number and size of the sp…
Enhanced superconductivity of YBCO interfaces: origin of high critical temperature in layered superconductors
S. S. Tinchev
Superconducting transition temperatures Tc of the YBCO film surface and of the YBCO film/substrate interface were measured inductively. It was observed that the interface- Tc is al…
Interface superconductivity: the new old story
S. S. Tinchev
Recently there is a great excitation about enhancement of the superconducting transition temperature in bilayer LaSrCuO materials. Responsible for this phenomenon is probably the i…