155 citations · 342 across the 14 of their papers we have counts for
14 papers
Investigation of internal electric fields in graphene/6H-SiC under illumination by Pockels effect
Vaclav Dedic, Jakub Sanitrak, Tomas Fridrisek +4
In this paper, we introduce a method for mapping profiles of internal electric fields in birefringent crystals based on the electro-optic Pockels effect and measuring phase differe…
Plasmon-plasmon interaction and the role of buffer in epitaxial graphene micro-flakes
Mykhailo Shestopalov, Václav Dědič, Martin Rejhon +7
We investigate the origin of the translational symmetry breaking in epitaxially grown single-layer graphene. Despite the surface morphology of homogeneous graphene films influenced…
Spectral Current Density and Responsivity Scaling for Fourier Transform Photocurrent Spectroscopy
Jan Kunc, Bohdan Morzhuk, Mykhailo Shestopalov +2
We propose and experimentally verify two methods to scale arbitrary units to photocurrent spectral density (A/eV) in Fourier Transform Photocurrent (FTPC) spectroscopy. We also pro…
Intercalation of hydrogen in the SiC/epitaxial graphene interface
Jan Kunc, Martin Rejhon, Pavel Hlídek
We have measured optical absorption in mid-infrared spectral range on hydrogen intercalated epitaxial graphene grown on silicon face of SiC. We have used attenuated total reflectio…
The electroluminescent properties based on bias polarity of the epitaxial graphene/aluminium SiC junction
M. Rejhon, J. Franc, V. Dědič +2
We investigated the electroluminescent properties of the epitaxial graphene/SiC junction. The temperature and current dependence of electroluminescence from the epitaxial graphene/…
Efficient Charge Collection in Coplanar Grid Radiation Detectors
Jan Kunc, Petr Praus, Eduard Belas +3
We have modeled laser-induced transient current waveforms in radiation coplanar grid detectors. Poisson's equation has been solved by finite element method and currents induced by…
Effect of residual gas composition on epitaxial graphene growth on SiC
Jan Kunc, Martin Rejhon, Eduard Belas +3
In recent years, graphene growth optimization has been one of the key routes towards large-scale, high-quality graphene production. We have measured in-situ residual gas content du…
Fractional Quantum Hall Effect in a Diluted Magnetic Semiconductor
C. Betthausen, P. Giudici, A. Iankilevitch +9
We report the observation of the fractional quantum Hall effect in the lowest Landau level of a two-dimensional electron system (2DES), residing in the diluted magnetic semiconduct…
Controlled epitaxial graphene growth within amorphous carbon corrals
James Palmer, Jan Kunc, Yike Hu +4
Structured growth of high quality graphene is necessary for technological development of carbon based electronics. Specifically, control of the bunching and placement of surface st…
Wafer bonding solution to epitaxial graphene - silicon integration
Rui Dong, Zelei Guo, James Palmer +7
The development of graphene electronics requires the integration of graphene devices with Si-CMOS technology. Most strategies involve the transfer of graphene sheets onto silicon,…
A method to extract pure Raman spectrum of epitaxial graphene on SiC
Jan Kunc, Yike Hu, James Palmer +2
A method is proposed to extract pure Raman spectrum of epitaxial graphene on SiC by using a Non-negative Matrix Factorization. It overcomes problems of negative spectral intensity…
Record Maximum Oscillation Frequency in C-face Epitaxial Graphene Transistors
Zelei Guo, Rui Dong, Partha Sarathi Chakraborty +9
The maximum oscillation frequency (fmax) quantifies the practical upper bound for useful circuit operation. We report here an fmax of 70 GHz in transistors using epitaxial graphene…
Fractional quantum Hall effect in CdTe
B. A. Piot, J. Kunc, M. Potemski +6
The fractional quantum Hall (FQH) effect is reported in a high mobility CdTe quantum well at mK temperatures. Fully-developed FQH states are observed at filling factor 4/3 and 5/3…
Enhancement of the spin-gap in fully occupied two-dimensional Landau levels
J. Kunc, K. Kowalik, F. J. Teran +7
Polarization-resolved magneto-luminescence, together with simultaneous magneto-transport measurements, have been performed on a two-dimensional electron gas (2DEG) confined in CdTe…