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Fabrication and electrical transport properties of embedded graphite microwires in a diamond matrix

Autor: Barzola-Quiquia, J., Lühmann, T., Wunderlich, R., Stiller, M., Zoraghi, M., Meijer, J., Esquinazi, P., Böttner, J., Estrela-Lopis, I.

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~MeV energy. Initial samples are amorphous and after annealing at $T\app

Externí odkaz: http://arxiv.org/abs/1702.05409

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Influence of rhombohedral stacking order in the electrical resistance of bulk and mesoscopic graphite

Autor: Zoraghi, M., Barzola-Quiquia, J., Stiller, M., Setzer, A., Esquinazi, P., Kloess, G. H., Muenster, T., Lühmann, T., Estrela-Lopis, I.

Publikováno v: Phys. Rev. B 95, 045308 (2017)

The electrical, in-plane resistance as a function of temperature $R(T)$ of bulk and mesoscopic thin graphite flakes obtained from the same batch was investigated. Samples thicker than $\sim 30$ nm show metalliclike contribution in a temperature range

Externí odkaz: http://arxiv.org/abs/1603.06365

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Topological Insulator Thin Films Starting from the Amorphous Phase - Bi$_2$Se$_3$ as Example

Autor: Barzola-Quiquia, J., Lehmann, T., Stiller, M., Spemann, D., Esquinazi, P., Häussler, P.

We present a new method to obtain topological insulator Bi$_2$Se$_3$ thin films with a centimeter large lateral length. To produce amorphous Bi$_2$Se$_3$ thin films we have used a sequential flash-evaporation method at room temperature. Transmission

Externí odkaz: http://arxiv.org/abs/1502.01135

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