645 citations · 1.6k across the 13 of their papers we have counts for
13 papers
Chemical profiles of the oxides on tantalum in state of the art superconducting circuits
Russell A. McLellan, Aveek Dutta, Chenyu Zhou +23
Over the past decades, superconducting qubits have emerged as one of the leading hardware platforms for realizing a quantum processor. Consequently, researchers have made significa…
In situ investigation of conducting interface formation in LaAlO3/SrTiO3 heterostructure
Hyang Keun Yoo, Luca Moreschini, Aaron Bostwick +4
The high-mobility conducting interface (CI) between LaAlO_{3}(LAO) and SrTiO_{3}(STO) has revealed many fascinating phenomena, including exotic magnetism and superconductivity. But…
Enhanced tunability of two-dimensional electron gas on SrTiO3 through heterostructuring
Hyang Keun Yoo, Luca Moreschini, Andrew L. Walter +4
Two-dimensional electron gases (2DEGs) on the SrTiO3 (STO) surface or in STO-based heterostructures have exhibited many intriguing phenomena, which are strongly dependent on the 2D…
Electronic Instability in a Zero-Gap Semiconductor: the Charge-Density Wave in (TaSe4)2I
C. Tournier-Colletta, L. Moreschini, G. Autès +10
We report a comprehensive study of the paradigmatic quasi-1D compound (TaSe4)2I performed by means of angle-resolved photoemission spectroscopy (ARPES) and first-principles electro…
Visualizing Atomic-Scale Negative Differential Resistance in Bilayer Graphene
Keun Su Kim, Tae-Hwan Kim, Andrew L. Walter +4
We investigate the atomic-scale tunneling characteristics of bilayer graphene on silicon carbide using the scanning tunneling microscopy. The high-resolution tunneling spectroscopy…
Small scale rotational disorder observed in epitaxial graphene on SiC(0001)
Andrew L. Walter, Aaron Bostwick, Florian Speck +8
Interest in the use of graphene in electronic devices has motivated an explosion in the study of this remarkable material. The simple, linear Dirac cone band structure offers a uni…
Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene
I. Crassee, M. Orlita, M. Potemski +6
We show that in graphene epitaxially grown on SiC the Drude absorption is transformed into a strong terahertz plasmonic peak due to natural nanoscale inhomogeneities, such as subst…
Extraordinary epitaxial alignment of graphene islands on Au(111)
Joseph M. Wofford, Elena Starodub, Andrew L. Walter +7
Pristine, single-crystalline graphene displays a unique collection of remarkable electronic properties that arise from its two-dimensional, honeycomb structure. Using in-situ low-e…
Electronic structure of graphene on single crystal copper substrates
Andrew L. Walter, Shu Nie, Aaron Bostwick +7
The electronic structure of graphene on Cu(111) and Cu(100) single crystals is investigated using low energy electron microscopy, low energy electron diffraction and angle resolved…
Effective screening and the plasmaron bands in Graphene
Andrew L. Walter, Aaron Bostwick, Ki-Joon Jeon +10
Electron-plasmon coupling in graphene has recently been shown to give rise to a "plasmaron" quasiparticle excitation. The strength of this coupling has been predicted to depend on…
Multi-component magneto-optical conductivity of multilayer graphene on SiC
I. Crassee, J. Levallois, D. van der Marel +3
Far-infrared diagonal and Hall conductivities of multilayer epitaxial graphene on the C-face of SiC were measured using magneto-optical absorption and Faraday rotation in magnetic…
Highly p-doped graphene obtained by fluorine intercalation
Andrew L. Walter, Ki-Joon Jeon, Aaron Bostwick +8
We present a method for decoupling epitaxial graphene grown on SiC(0001) by intercalation of a layer of fluorine at the interface. The fluorine atoms do not enter into a covalent b…
Giant Faraday rotation in single- and multilayer graphene
Iris Crassee, Julien Levallois, Andrew L. Walter +6
Optical Faraday rotation is one of the most direct and practically important manifestations of magnetically broken time-reversal symmetry. The rotation angle is proportional to the…