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Showing 2011 · cond-mat.mes-hallShow all

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cond-mat.mes-hall2011★ 35 cited

Magnetophonon resonance in graphite: High-field Raman measurements and electron-phonon coupling contributions

Y. Kim, Y. Ma, A. Imambekov +5

We perform Raman scattering experiments on natural graphite in magnetic fields up to 45 T, observing a series of peaks due to interband electronic excitations over a much broader m…

cond-mat.mes-hall2011★ 169 cited

In Situ Imaging of the Conducting Filament in a Silicon Oxide Resistive Switch

Jun Yao, Lin Zhong, Douglas Natelson +1

The nature of the conducting filaments in many resistive switching systems has been elusive. Through in situ transmission electron microscopy, we image the real-time formation and…

cond-mat.mes-hall2011★ 53 cited

Circular-Polarization Dependent Cyclotron Resonance in Large-Area Graphene in Ultrahigh Magnetic Fields

L. G. Booshehri, C. H. Mielke, D. G. Rickel +11

Using ultrahigh magnetic fields up to 170 T and polarized midinfrared radiation with tunable wavelengths from 9.22 to 10.67 um, we studied cyclotron resonance in large-area graphen…

cond-mat.mes-hall2011★ 44 cited

Terahertz Coherent Control of a Landau-Quantized Two-Dimensional Electron Gas

T. Arikawa, X. Wang, D. J. Hilton +3

We demonstrate coherent control of cyclotron resonance (CR) in a two-dimensional electron gas (2DEG). We use a sequence of terahertz pulses to control the amplitude of CR oscillati…

cond-mat.mes-hall2011★ 43 cited

The Unique Origin of Colors of Armchair Carbon Nanotubes

E. H. Haroz, B. Y. Lu, P. Nikolaev +3

The colors of suspended metallic colloidal particles are determined by their size-dependent plasma resonance, while those of semiconducting colloidal particles are determined by th…

cond-mat.mes-hall2011★ 122 cited

Giant Superfluorescent Bursts from a Semiconductor Magnetoplasma

G. T. Noe, J. -H. Kim, J. Lee +6

Currently, considerable resurgent interest exists in the concept of superradiance (SR), i.e., accelerated relaxation of excited dipoles due to cooperative spontaneous emission, fir…

cond-mat.mes-hall2011★ 2 cited

Plasmons in nanoscale metal junctions: optical rectification and thermometry

Douglas Natelson, Daniel R. Ward, Falco Hüser +4

We use simultaneous electronic transport and optical characterization measurements to reveal new information about electronic and optical processes in nanoscale junctions fabricate…

cond-mat.mes-hall2011★ 162 cited

Perfect Andreev Reflection of Helical Edge Modes in InAs/GaSb Quantum Wells

Ivan Knez, Rui-Rui Du, Gerard Sullivan

We present an experimental study of inverted InAs/GaSb composite quantum wells in the hybridization regime and contacted by superconducting electrodes. A front gate is used to vary…

cond-mat.mes-hall2011★ 253 cited

Vibrational and electronic heating in nanoscale junctions

Daniel R. Ward, David A. Corley, James M. Tour +1

Understanding and controlling the flow of heat is a major challenge in nanoelectronics. When a junction is driven out of equilibrium by light or the flow of electric charge, the vi…

cond-mat.mes-hall2011★ 13 cited

Dephasing of G-Band Phonons in Single-Wall Carbon Nanotubes Probed via Impulsive Stimulated Raman Scattering

J. -H. Kim, K. -J. Yee, Y. -S. Lim +3

We have studied the coherent dynamics of G-band phonons in single-walled carbon nanotubes through impulsive stimulated Stokes and anti-Stokes Raman scattering. The probe energy dep…

cond-mat.mes-hall2011★ 12 cited

Spin Relaxation Times of Single-Wall Carbon Nanotubes

W. D. Rice, R. T. Weber, P. Nikolaev +4

We have measured temperature ()- and power-dependent electron spin resonance in bulk single-wall carbon nanotubes to determine both the spin-lattice and spin-spin relaxation tim…

cond-mat.mes-hall2011★ 50 cited

Anomalous insulator metal transition in boron nitride-graphene hybrid atomic layers

Li Song, Luis Balicas, Duncan J. Mowbray +8

The study of two-dimensional (2D) electronic systems is of great fundamental significance in physics. Atomic layers containing hybridized domains of graphene and hexagonal boron ni…

cond-mat.mes-hall2011★ 979 cited

Evidence for Helical Edge Modes in Inverted InAs/GaSb Quantum Wells

Ivan Knez, Rui-Rui Du, Gerard Sullivan

We present an experimental study of low temperature electronic transport in the hybridization gap of inverted InAs/GaSb composite quantum wells. Electrostatic gate is used to push…

cond-mat.mes-hall2011★ 55 cited

Field enhancement in subnanometer metallic gaps

Antonio Garcia-Martin, Daniel R. Ward, Douglas Natelson +1

Motivated by recent experiments [Ward et al., Nature Nanotech. 5, 732 (2010)], we present here a theoretical analysis of the optical response of sharp gold electrodes separated by…

cond-mat.mes-hall2011★ 406 cited

Optical Rectification and Field Enhancement in a Plasmonic Nanogap

Daniel R. Ward, Falco Hueser, Fabian Pauly +2

Metal nanostructures act as powerful optical antennas[1, 2] because collective modes of the electron fluid in the metal are excited when light strikes the surface of the nanostruct…

cond-mat.mes-hall2011★ 8 cited

Single-particle and collective excitations in quantum wires made up of vertically stacked quantum dots: Zero magnetic field

Manvir S Kushwaha

We report on the theoretical investigation of the elementary electronic excitations in a quantum wire made up of vertically stacked self-assembled InAs/GaAs quantum dots. The lengt…

cond-mat.mes-hall2011★ 39 cited

Resonant Raman Spectroscopy of Armchair Carbon Nanotubes: Absence of "Metallic" Signature

E. H. Haroz, J. G. Duque, W. D. Rice +3

The appearance of a broad peak at 1550 cm (G peak) in carbon nanotube resonant Raman scattering spectra has been conventionally attributed to the presence of met…

cond-mat.mes-hall2011★ 723 cited

Spatially Resolving Spin-split Edge States of Chiral Graphene Nanoribbons

Chenggang Tao, Liying Jiao, Oleg V. Yazyev +9

A central question in the field of graphene-related research is how graphene behaves when it is patterned at the nanometer scale with different edge geometries. Perhaps the most fu…