635 citations · 2.4k across the 34 of their papers we have counts for
36 papers
Electrical Detection of Magnetization Switching in Single-Molecule Magnets
Amjad Alqahtani, DaVonne Henry, Lubomír Havlíček +12
Single-molecule magnets (SMMs) with chemically tailorable properties are potential building blocks for quantum computing, high-density magnetic memory, and spintronics.1 2 3,4 Thes…
Quasi-free-standing AA-stacked bilayer graphene induced by calcium intercalation of the graphene-silicon carbide interface
Antonija Grubišić-Čabo, Jimmy C. Kotsakidis, Yuefeng Yin +11
We study quasi-freestanding bilayer graphene on silicon carbide intercalated by calcium. The intercalation, and subsequent changes to the system, were investigated by low-energy el…
Strong transient magnetic fields induced by THz-driven plasmons in graphene disks
Jeong Woo Han, Pavlo Sai, Dmytro But +10
Strong circularly polarized excitation opens up the possibility to generate and control effective magnetic fields in solid state systems, e.g., via the optical inverse Faraday effe…
Ultrafast Hot-Carrier cooling in Quasi Freestanding Bilayer Graphene with Hydrogen Intercalated Atoms
Sachin Sharma, Rachael L. Myers-Ward, David Kurt Gaskill +1
We perform a femtosecond-THz optical pump-probe spectroscopy to investigate the cooling dynamics of hot carriers in quasi-free standing bilayer epitaxial graphene. We observed long…
Magnesium-intercalated graphene on SiC: highly n-doped air-stable bilayer graphene at extreme displacement fields
Antonija Grubišić-Čabo, Jimmy C. Kotsakidis, Yuefeng Yin +12
We use angle-resolved photoemission spectroscopy to investigate the electronic structure of bilayer graphene at high n-doping and extreme displacement fields, created by intercalat…
Freestanding n-Doped Graphene via Intercalation of Calcium and Magnesium into the Buffer Layer - SiC(0001) Interface
Jimmy C. Kotsakidis, Antonija Grubišić-Čabo, Yuefeng Yin +12
The intercalation of epitaxial graphene on SiC(0001) with Ca has been studied extensively, yet precisely where the Ca resides remains elusive. Furthermore, the intercalation of Mg…
Effect of defect-induced cooling on graphene hot-electron bolometers
Abdel El Fatimy, Peize Han, Nicholas Quirk +9
At high phonon temperature, defect-mediated electron-phonon collisions (supercollisions) in graphene allow for larger energy transfer and faster cooling of hot electrons than the n…
Nanoscale patterning of quasiparticle band alignment
Søren Ulstrup, Cristina E. Giusca, Jill A. Miwa +10
Control of atomic-scale interfaces between materials with distinct electronic structures is crucial for the design and fabrication of most electronic devices. In the case of two-di…
Giant magneto-optical Kerr enhancement from films on SiC due to the optical properties of the substrate
A. Mukherjee, C. T. Ellis, M. M. Arik +13
We report a giant enhancement of the mid-infrared (MIR) magneto-optical complex Kerr angle (polarization change of reflected light) in a variety of materials grown on SiC. In epita…
Resonant optical spin initialization and readout of single silicon vacancies in 4H-SiC
Hunter B. Banks, Oney O. Soykal, Rachael Myers-Ward +3
The silicon monovacancy in 4H-SiC is a promising candidate for solid-state quantum information processing. We perform high-resolution optical spectroscopy on single V2 defects at c…
Thickness dependent hydrophobicity of epitaxial graphene
M. Munz, C. E. Giusca, R. L. Myers-Ward +2
This article addresses the much debated question whether the degree of hydrophobicity of single-layer graphene (1LG) is different from the one of double-layer graphene (2LG). Knowl…
Water affinity to epitaxial graphene: the impact of layer thickness
Cristina E. Giusca, Vishal Panchal, Martin Munz +5
The sensitivity to water of epitaxial graphene is examined in this study.
Atmospheric doping effects in epitaxial graphene: correlation of local and global electrical measurements
Vishal Panchal, Cristina E. Giusca, Arseniy Lartsev +5
We directly correlate the local (20-nm scale) and global electronic properties of a device containing mono-, bi- and tri-layer epitaxial graphene (EG) domains on 6H-SiC(0001) by si…
Ultra-broadband photodetectors based on epitaxial graphene quantum dots
Abdel El Fatimy, Anindya Nath, Byoung Don Kong +7
Graphene is an ideal material for hot-electron bolometers, due to its low heat capacity and weak electron-phonon coupling. Nanostructuring graphene with quantum dot constrictions y…
Correlated Disorder in van der Waals Heterostructures
Nouamane Laanait, Zhan Zhang, Christian M. Schleputz +6
The individual building blocks of van der Waals (vdW) heterostructures host fascinating physical phenomena, ranging from ballistic electron transport in graphene to striking optica…
Epitaxial graphene quantum dots for high-performance THz bolometers
A. El Fatimy, R. L. Myers-Ward, A. K. Boyd +3
Light absorption in graphene causes a large change in electron temperature, due to low electronic heat capacity and weak electron phonon coupling [1-3], making it very attractive a…
Hybrid Metal-Graphene Plasmons for Tunable Terahertz Technology
Mohammad M. Jadidi, Andrei B. Sushkov, Rachael L. Myers-Ward +6
Among its many outstanding properties, graphene supports terahertz surface plasma waves -- sub-wavelength charge density oscillations connected with electromagnetic fields that are…
Graphene Manipulation on 4H-SiC(0001) Using Scanning Tunneling Microscopy
P. Xu, M. L. Ackerman, S. D. Barber +8
Atomic-scale topography of epitaxial multilayer graphene grown on 4H-SiC(0001) was investigated using scanning tunneling microscopy (STM). Bunched nano-ridges ten times smaller tha…
Atomic-Scale Movement Induced in Nano-Ridges by Scanning Tunneling Microscopy on Epitaxial Graphene Grown on 4H-SiC(0001)
P. Xu, S. D. Barber, J. K. Schoelz +8
Nanoscale ridges in epitaxial multilayer graphene grown on the silicon face of 4 degree off-cut 4H-SiC (0001) were found using scanning tunneling microscopy (STM). These nano-ridge…
Competing scanning tunneling microscope tip-interlayer interactions for twisted multilayer graphene on the a-plane SiC surface
P. Xu, M. L. Ackerman, S. D. Barber +7
Scanning tunneling microscopy (STM) images are obtained for the first time on few layer and twisted multilayer epitaxial graphene states synthesized on n+ 6H-SiC a-plane non-polar…
Multilayer graphene, Moiré patterns, grain boundaries and defects identified by scanning tunneling microscopy on the m-plane, non-polar surface of SiC
P. Xu, D. Qi, J. K. Schoelz +9
Epitaxial graphene is grown on a non-polar n+ 6H-SiC m-plane substrate and studied using atomic scale scanning tunneling microscopy. Multilayer graphene is found throughout the sur…
Towards pristine graphene-metal interface and microstructures: Laser assisted direct patterning on Epitaxial graphene
A. Nath, M. Currie, V. D. Wheeler +11
Graphene-metal contact resistance is governed by both intrinsic and extrinsic factors. Intrinsically, both the density of states bottleneck near the Dirac point and carrier reflect…
Hot carrier relaxation of Dirac fermions in bilayer epitaxial graphene
J. Huang, J. A. Alexander-Webber, T. J. B. M. Janssen +8
Energy relaxation of hot Dirac fermions in bilayer epitaxial graphene is experimentally investigated by magnetotransport measurements on Shubnikov-de Haas oscillations and weak loc…
Membrane amplitude and triaxial stress in twisted bilayer graphene deciphered using first-principles directed elasticity theory and scanning tunneling microscopy
M. Neek-Amal, P. Xu, D. Qi +7
Twisted graphene layers produce a moiré pattern (MP) structure with a predetermined wavelength for given twist angle. However, predicting the membrane corrugation amplitude for any…