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Spin dephasing and photoinduced spin diffusion in a high-mobility two-dimensional electron system embedded in a GaAs-(Al,Ga)As quantum well grown in the [110] direction (2011)

R. Völkl, M. Griesbeck, S. A. Tarasenko, D. Schuh, W. Wegscheider, C. Schüller, and T. Korn

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2011-06-25

Description: Author(s): R. Völkl, M. Griesbeck, S. A. Tarasenko, D. Schuh, W. Wegscheider, C. Schüller, and T. Korn We have studied spin dephasing and spin diffusion in a high-mobility two-dimensional electron system, embedded in a GaAs/AlGaAs quantum well grown in the [110] direction, by a two-beam Hanle experiment. For very low excitation density, we observe spin lifetimes of more than 16 ns, which rapidly decr... [Phys. Rev. B 83, 241306] Published Fri Jun 24, 2011

Keywords: Semiconductors II: surfaces, interfaces, microstructures, and related topics

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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Spin and orbital mechanisms of the magnetogyrotropic photogalvanic effects in GaAs/Al_{x} Ga_{1-x} As quantum well structures (2011)

V. Lechner, L. E. Golub, F. Lomakina, V. V. Bel’kov, P. Olbrich, S. Stachel, I. Caspers, M. Griesbeck, M. Kugler, M. J. Hirmer, T. Korn, C. Schüller, D. Schuh, W. Wegscheider, and S. D. Ganichev

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2011-04-21

Description: Author(s): V. Lechner, L. E. Golub, F. Lomakina, V. V. Bel’kov, P. Olbrich, S. Stachel, I. Caspers, M. Griesbeck, M. Kugler, M. J. Hirmer, T. Korn, C. Schüller, D. Schuh, W. Wegscheider, and S. D. Ganichev We report on the study of the linear and circular magnetogyrotropic photogalvanic effect (MPGE) in GaAs/AlGaAs quantum well structures. Using the fact that in such structures the Landé factor g^{*} depends on the quantum well (QW) width and has different signs for narrow and wide QWs, we succeeded ... [Phys. Rev. B 83, 155313] Published Wed Apr 20, 2011

Keywords: Semiconductors II: surfaces, interfaces, microstructures, and related topics

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

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Spin dynamics in p-doped semiconductor nanostructures subject to a magnetic field tilted from the Voigt geometry (2013)

K. Korzekwa, C. Gradl, M. Kugler, S. Furthmeier, M. Griesbeck, M. Hirmer, D. Schuh, W. Wegscheider, T. Kuhn, C. Schüller, T. Korn, and P. Machnikowski

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2013-10-09

Description: Author(s): K. Korzekwa, C. Gradl, M. Kugler, S. Furthmeier, M. Griesbeck, M. Hirmer, D. Schuh, W. Wegscheider, T. Kuhn, C. Schüller, T. Korn, and P. Machnikowski We develop a theoretical description of the spin dynamics of resident holes in a p -doped semiconductor quantum well (QW) subject to a magnetic field slightly tilted from the Voigt geometry. We find the expressions for the signals measured in time-resolved Faraday rotation (TRFR) and resonant spin am... [Phys. Rev. B 88, 155303] Published Tue Oct 08, 2013

Keywords: Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Topics: Physics

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Decoherence-assisted initialization of a resident hole spin polarization in a p-doped semiconductor quantum well (2011)

M. Kugler, K. Korzekwa, P. Machnikowski, C. Gradl, S. Furthmeier, M. Griesbeck, M. Hirmer, D. Schuh, W. Wegscheider, T. Kuhn, C. Schüller, and T. Korn

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2011-08-31

Description: Author(s): M. Kugler, K. Korzekwa, P. Machnikowski, C. Gradl, S. Furthmeier, M. Griesbeck, M. Hirmer, D. Schuh, W. Wegscheider, T. Kuhn, C. Schüller, and T. Korn We investigate spin dynamics of resident holes in a p -modulation-doped GaAs/Al 0.3 Ga 0.7 As single quantum well. Time-resolved Faraday and Kerr rotation, as well as resonant spin amplification, are utilized in our study. We observe that nonresonant or high-power optical pumping leads to a resident hole... [Phys. Rev. B 84, 085327] Published Tue Aug 30, 2011

Keywords: Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Topics: Physics

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Total and species abundance of Polychaeta during POLARSTERN cruise ANT-XXIV/2, ANDEEP-SYSTCO, in the Southern Ocean (2011)

Wilmsen, Eileen ; Schüller, Myriam

PANGAEA

In: Supplement to: Wilmsen, Eileen; Schüller, Myriam (2011): Diversity and distribution of Polychaeta in deep Antarctic and Subantarctic waters along the Greenwich meridian. Deep Sea Research Part II: Topical Studies in Oceanography, 58(19-20), 2004-2012, https://doi.org/10.1016/j.dsr2.2011.01.011

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Publication Date: 2024-06-12

Description: In the course of the ANDEEP-SYSTCO project, during the ANT XXIV-2 expedition in austral summer 2007/2008, the diversity and composition of the Polychaeta of the Antarctic deep-sea and adjacent South Atlantic basins were analyzed. A total of 847 individuals of 31 families were found belonging to 86 different species. Calculation of diversity (Shannon-Wiener Index, Pielou's Evenness) and the general species composition of Polychaeta showed patterns typical for the deep sea, with high species richness and low abundances. Lowest diversity was found in the Agulhas Basin in over 4000 m water depth. Lowest Evenness was found on top of Maud Rise where one-third of all Polychaeta belonged to one species. Cluster analyses resulted in higher affinities of Maud Rise to the Agulhas Basin than to the Antarctic continental slope. Explanations are sought in similarities of environmental factors (e.g., sediment, food input).

Keywords: ANDEEP-SYSTCO; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158

Type: Dataset

Format: application/zip, 2 datasets

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