78 citations · 140 across the 4 of their papers we have counts for
6 papers
On the low-field Hall coefficient of graphite
P. Esquinazi, J. Krüger, J. Barzola-Quiquia +3
We have measured the temperature and magnetic field dependence of the Hall coefficient () in three, several micrometer long multigraphene samples of thickness between $\…
Comment on "Dirac cones reshaped by interaction effects in suspended graphene" by Elias et al., Nature Physics 7, 701 (2011)
N. García, P. Esquinazi, A. A. Pasa
Two different points of view are available to understand the behavior of graphene at low energies. One is considering a large that makes graphene a semimetal, and another for…
Magnetic order in Graphite: Experimental evidence, intrinsic and extrinsic difficulties
P. Esquinazi, J. Barzola-Quiquia, D. Spemann +5
We discuss recently obtained data using different experimental methods including magnetoresistance measurements that indicate the existence of metal-free high-temperature magnetic…
Electrostatic Force Microscopy on Oriented Graphite Surfaces: Where Insulating and Conducting Behaviors Coexist
Yonghua Lu, M. Munoz, C. S. Steplecaru +5
We present measurements of the electric potential fluctuations on the surface of highly oriented pyrolytic graphite using electrostatic force and atomic force microscopy. Micrometr…
Wedge - Shaped Absorbing Samples Look Left Handed: The Problem of Interpreting Negative Refraction, and its Solution
M. Sanz, A. C. Papageorgopoulos, W. F. Egelhoff +3
We report experiments of light transmissivity at wavelengths: 532 and 400 nm, through an Au film with a wedge shape. Our results mimic the negative refraction reported by others fo…
Losses for microwave transmission in metamaterials for producing left-handed materials: The strip wires
E. V. Ponizovskaya, M. Nieto-Vesperinas, N. Garcia
This paper shows that the effective dielectric permitivity for the metamaterials used so far to obtain left-handed materials, with strip wires 0.003cm thick, is dominated by the im…