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19972023
most citedSpatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene

2.5k citations

Showing 2010 · cond-mat.mes-hallShow all

8 papers · 2 filters

cond-mat.mes-hall2010★ 61 cited

Sub-linear radiation power dependence of photo-excited resistance oscillations in two-dimensional electron systems

Jesus Inarrea, R. G. Mani, W. Wegscheider

We find that the amplitude of the radiation-induced magnetoresistance oscillations in GaAs/AlGaAs system grows nonlinearly as where is the amplitude an…

cond-mat.mes-hall2010★ 4 cited

Local investigation of the energy gap within the incompressible strip in the quantum Hall regime

E. V. Deviatov, A. Lorke, G. Biasiol +2

We experimentally study the energy gap within the incompressible strip at local filling factor at the quantum Hall edge for samples of very different mobilities. The obtain…

cond-mat.mes-hall2010

Measurement of spin-dependent conductivities in a two-dimensional electron gas

H. Ebrahimnejad, Y. Ren, S. M. Frolov +3

Spin accumulation is generated by injecting an unpolarized charge current into a channel of GaAs two-dimensional electron gas subject to an in-plane magnetic field, then measured i…

cond-mat.mes-hall2010★ 91 cited

Imaging Localized States in Graphene Nanostructures

S. Schnez, J. Güttinger, M. Huefner +3

Probing techniques with spatial resolution have the potential to lead to a better understanding of the microscopic physical processes and to novel routes for manipulating nanostruc…

cond-mat.mes-hall2010★ 8 cited

Spatially resolved ultrafast transport current in GaAs photoswitches

L. Prechtel, S. Manus, D. Schuh +2

We apply a pump- and probe-scheme to coplanar stripline circuits to investigate the photocurrent response of GaAs photoswitches in time and space. We find a displacement current pu…

cond-mat.mes-hall2010★ 24 cited

Zero-bias Anomaly of Quantum Point Contacts in the Low-Conductance Limit

Y. Ren, W. W. Yu, S. M. Frolov +2

Most quantum point contacts (QPCs) fabricated in high-mobility 2D electron gases show a zero-bias conductance peak near pinchoff, but the origin of this peak remains a mystery. Pre…

cond-mat.mes-hall2010★ 73 cited

Observation of excited states in a graphene double quantum dot

F. Molitor, H. Knowles, S. Dröscher +8

We study a graphene double quantum dot in different coupling regimes. Despite the strong capacitive coupling between the dots, the tunnel coupling is below the experimental resolut…

cond-mat.mes-hall2010★ 20 cited

Electron-avalanche amplifier based on the electronic Venturi effect

D. Taubert, G. J. Schinner, H. P. Tranitz +4

Scattering of otherwise ballistic electrons far from equilibrium is investigated in a cold two-dimensional electron system. The interaction between excited electrons and the degene…