66 citations · 78 across the 2 of their papers we have counts for
5 papers
Nonintrinsic origin of the magnetic-field-induced metal-insulator and electronic phase transitions in graphite
José Barzola-Quiquia, Pablo D. Esquinazi, Christian E. Precker +5
A detailed magnetoresistance study of bulk and microflake samples of highly oriented pyrolytic graphite with a thickness of 25 m to 23~nm reveals that the usually observed field…
Influence of Interfaces on the Transport Properties of Graphite revealed by Nanometer Thickness Reduction
Mahsa Zoraghi, José Barzola-Quiquia, Markus Stiller +2
We investigated the influence of thickness reduction on the transport properties of graphite microflakes. Using oxygen plasma etching we decreased the thickness of highly oriented…
Fabrication and electrical transport properties of embedded graphite microwires in a diamond matrix
J. Barzola-Quiquia, T. Lühmann, R. Wunderlich +6
Micrometer width and nanometer thick wires with different shapes were produced $\approx 3~\upmu$m below the surface of a diamond crystal using a microbeam of He ions with 1.8~M…
Identification of a possible superconducting transition above room temperature in natural graphite crystals
Christian E. Precker, Pablo D. Esquinazi, Ana Champi +11
Measuring with high precision the electrical resistance of highly ordered natural graphite samples from a Brazil mine, we have identified a transition at 350~K with 40~…
Influence of rhombohedral stacking order in the electrical resistance of bulk and mesoscopic graphite
M. Zoraghi, J. Barzola-Quiquia, M. Stiller +6
The electrical, in-plane resistance as a function of temperature of bulk and mesoscopic thin graphite flakes obtained from the same batch was investigated. Samples thicker t…