576 citations · 10.8k across the 238 of their papers we have counts for
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Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field
K. Muraki, J. G. S. Lok, S. Kraus +5
Magneto-drag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At ν=3/2 a clear T^{4/3} dependence is observed, which signifies t…
Probing the Electrostatics of Integer Quantum Hall Edges with Momentum-Resolved Tunnel Spectroscopy
M. Huber, M. Grayson, D. Schuh +4
We present measurements of momentum-resolved magneto-tunneling from a perpendicular two-dimensional (2D) contact into integer quantum Hall (QH) edges at a sharp edge potential crea…
Circular Photogalvanic Effect at Inter-Band Excitation in Semiconductor Quantum Wells
V. V. Bel'kov, S. D. Ganichev, Petra Schneider +7
We observed a circular photogalvanic effect (CPGE) in GaAs quantum wells at inter-band excitation. The spectral dependence of the CPGE is measured together with that of the polariz…
Magnetic field dependent transmission phase of a double dot system in a quantum ring
M. Sigrist, A. Fuhrer, T. Ihn +4
The Aharonov-Bohm effect is measured in a four-terminal open ring geometry based on a Ga[Al]As heterostructure. Two quantum dots are embedded in the structure, one in each of the t…
Kelvin Probe Spectroscopy of a Two-Dimensional Electron Gas Below 300 mK
T. Vancura, S. Kicin, T. Ihn +3
A scanning force microscope with a base temperature below 300 mK is used for measuring the local electron density of a two-dimensional electron gas embedded in an Ga[Al]As heterost…
Combined atomic force microscope and electron-beam lithography used for the fabrication of variable-coupling quantum dots
M. C. Rogge, C. Fuehner, U. F. Keyser +4
We have combined direct nanofabrication by local anodic oxidation with conventional electron-beam lithography to produce a parallel double quantum dot based on a GaAs/AlGaAs hetero…
Metamorphosis of the Quantum Hall Ferromagnet at
Michelle Chen, Woowon Kang, Werner Wegscheider
We report on the dramatic evolution of the quantum Hall ferromagnet in the fractional quantum Hall regime at filling. A large enhancement in the characteristic timescale g…
Singlet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring
A. Fuhrer, T. Ihn, K. Ensslin +2
Wavefunction and interaction effects in the addition spectrum of a Coulomb blockaded many electron quantum ring are investigated as a function of asymmetrically applied gate voltag…
Experimental Separation of Rashba and Dresselhaus Spin-Splittings in Semiconductor Quantum Wells
S. D. Ganichev, V. V. Bel'kov, L. E. Golub +9
The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well (QW) structures are extracted from photocurrent measurements…
Resonant inversion of the circular photogalvanic effect in n-doped quantum wells
S. D. Ganichev, V. V. Bel'kov, Petra Schneider +7
We show that the sign of the circular photogalvanic effect can be changed by tuning the radiation frequency of circularly polarized light. Here resonant inversion of the photogalva…
Spin-galvanic effect due to optical spin orientation
S. D. Ganichev, Petra Schneider, V. V. Bel'kov +13
Under oblique incidence of circularly polarized infrared radiation the spin-galvanic effect has been unambiguously observed in (001)-grown -type GaAs quantum well (QW) structure…
Spin-Galvanic Effect in Quantum Wells
S. D. Ganichev, E. L. Ivchenko, V. V. Bel'kov +6
It is shown that a homogeneous non-equlibrium spin-polarization in semiconductor heterostructures results in an electric current. The microscopic origin of the effect is an inheren…