activity
19992025
most citedFirst direct observation of Dirac fermions in graphite

533 citations · 3.2k across the 59 of their papers we have counts for

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Showing cond-mat.mes-hallShow all

10 papers · 1 filter

cond-mat.mes-hall2019★ 40 cited

Ripplocation in graphite nanoplatelets during sonication assisted liquid phase exfoliation

A. V. Alaferdov, R. Savu, M. A. Canesqui +7

Defects induced by liquid-phase exfoliation of graphite using sonication were studied. It was shown that localized impact by cavitation shock waves can produce bulk ripplocations a…

cond-mat.mes-hall2017★ 11 cited

Effect of structural disorder on quantum oscillations in graphite

Bruno Camargo, Yakov Kopelevich, Steven Hubband +1

We have studied the effect of structural disorder on the de Haas van Alphen (dHvA) and Shubnikov de Haas (SdH) quantum oscillations measured in single-crystal and highly oriented p…

cond-mat.mes-hall2012

Extraordinary magnetoresistance of organic semiconductors : Hopping conductance via non-zero angular momentum orbitals

A. S. Alexandrov, V. A. Dediu, V. V. Kabanov +2

Highly-anisotropic in-plane magneto-resistance (MR) in graphite (HOPG) samples has been recently observed (Y. Kopelevich et al., arXiv:1202.5642) which is negative and linear in lo…

cond-mat.mes-hall2011★ 28 cited

Oxygen adsorption effect on magnetic properties of graphite

D. W. Boukhvalov, S. Moehlecke, R. R. da Silva +1

Both experimental and theoretical studies of the magnetic properties of micrographite and nanographite indicate a crucial role of the partial oxidation of graphitic zigzag edges in…

cond-mat.mes-hall2009★ 10 cited

Comment on "Consistent Interpretation of the Low-Temperature Magnetotransport in Graphite Using the Slonczewski-Weiss-McClure 3D Band-Structure Calculations" (arXiv:0902.1925)

Igor A. Luk'yanchuk, Yakov Kopelevich

In 2004 we have shown that substantial part of conductivity in graphite is provided by holes with massless linear spectrum - Dirac Fermions that coexist with massive normal carrier…

cond-mat.mes-hall2009★ 36 cited

Possible Fractional Quantum Hall Effect in Graphite

Y. Kopelevich, B. Raquet, M. Goiran +6

Measurements of basal plane longitudinal rho_b(B) and Hall rho_H(B) resistivities were performed on highly oriented pyrolytic graphite (HOPG) samples in pulsed magnetic field up to…

cond-mat.mes-hall2009★ 23 cited

Dirac Fermions in Graphite: the State of Art

I. Luk'yanchuk, Y. Kopelevich, M. El Marssi

Macroscopic concentration of massless charge carriers with linear conic spectrum - Dirac Fermions (DF) - was shown in 2004 to exist in highly oriented pyrolytic graphite (HOPG) and…

cond-mat.mes-hall2008

Unconventional Landau levels in bulk graphite revealed by Raman spectroscopy

A. F. Garcia-Flores, H. Terashita, E. Granado +1

The electronic Raman scattering of bulk graphite at zero magnetic field reveals a structureless signal characteristic of a metal. For T<~100 K and B > 2 T, several peaks at energie…

cond-mat.mes-hall2006★ 107 cited

Dirac and Normal Fermions in Graphite and Graphene: Implications to the Quantum Hall Effect

Igor A. Luk'yanchuk, Yakov Kopelevich

Spectral analysis of Shubnikov de Haas (SdH) oscillations of magnetoresistance and of Quantum Hall Effect (QHE) measured in quasi-2D highly oriented pyrolytic graphite (HOPG) [Phys…

cond-mat.mes-hall2006★ 36 cited

Integer Quantum Hall Effect in Graphite

H. Kempa, P. Esquinazi, Y. Kopelevich

We present Hall effect measurements on highly oriented pyrolytic graphite that indicate the occurrence of the integer quantum-Hall-effect. The evidence is given by the observation…