Search Results - (Author, Cooperation:O. Schmidt)

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  1. 1
    Staff View
    Publication Date:
    2018-08-28
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    1050-2947
    Electronic ISSN:
    1094-1622
    Topics:
    Physics
    Keywords:
    Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    F Gebert, Y Wan, F Wolf, Jan C Heip and Piet O Schmidt
    Institute of Physics (IOP)
    Published 2018
    Staff View
    Publication Date:
    2018-02-10
    Publisher:
    Institute of Physics (IOP)
    Electronic ISSN:
    1367-2630
    Topics:
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
  4. 4
  5. 5
    Staff View
    Publication Date:
    2015-03-15
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  6. 6
    A. B. Harbauer ; M. Opalinska ; C. Gerbeth ; J. S. Herman ; S. Rao ; B. Schonfisch ; B. Guiard ; O. Schmidt ; N. Pfanner ; C. Meisinger
    American Association for the Advancement of Science (AAAS)
    Published 2014
    Staff View
    Publication Date:
    2014-11-08
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    CDC2 Protein Kinase/metabolism ; *Cell Cycle ; Cyclin B/metabolism ; Cytosol/metabolism ; Mitochondria/*metabolism ; Mitochondrial Membrane Transport Proteins/*metabolism ; Phosphorylation ; Protein Precursors/*metabolism ; Protein Transport ; Saccharomyces cerevisiae/*cytology/*metabolism ; Saccharomyces cerevisiae Proteins/*metabolism
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    Latest Papers from Table of Contents or Articles in Press
  7. 7
    P. van der Harst ; W. Zhang ; I. Mateo Leach ; A. Rendon ; N. Verweij ; J. Sehmi ; D. S. Paul ; U. Elling ; H. Allayee ; X. Li ; A. Radhakrishnan ; S. T. Tan ; K. Voss ; C. X. Weichenberger ; C. A. Albers ; A. Al-Hussani ; F. W. Asselbergs ; M. Ciullo ; F. Danjou ; C. Dina ; T. Esko ; D. M. Evans ; L. Franke ; M. Gogele ; J. Hartiala ; M. Hersch ; H. Holm ; J. J. Hottenga ; S. Kanoni ; M. E. Kleber ; V. Lagou ; C. Langenberg ; L. M. Lopez ; L. P. Lyytikainen ; O. Melander ; F. Murgia ; I. M. Nolte ; P. F. O'Reilly ; S. Padmanabhan ; A. Parsa ; N. Pirastu ; E. Porcu ; L. Portas ; I. Prokopenko ; J. S. Ried ; S. Y. Shin ; C. S. Tang ; A. Teumer ; M. Traglia ; S. Ulivi ; H. J. Westra ; J. Yang ; J. H. Zhao ; F. Anni ; A. Abdellaoui ; A. Attwood ; B. Balkau ; S. Bandinelli ; F. Bastardot ; B. Benyamin ; B. O. Boehm ; W. O. Cookson ; D. Das ; P. I. de Bakker ; R. A. de Boer ; E. J. de Geus ; M. H. de Moor ; M. Dimitriou ; F. S. Domingues ; A. Doring ; G. Engstrom ; G. I. Eyjolfsson ; L. Ferrucci ; K. Fischer ; R. Galanello ; S. F. Garner ; B. Genser ; Q. D. Gibson ; G. Girotto ; D. F. Gudbjartsson ; S. E. Harris ; A. L. Hartikainen ; C. E. Hastie ; B. Hedblad ; T. Illig ; J. Jolley ; M. Kahonen ; I. P. Kema ; J. P. Kemp ; L. Liang ; H. Lloyd-Jones ; R. J. Loos ; S. Meacham ; S. E. Medland ; C. Meisinger ; Y. Memari ; E. Mihailov ; K. Miller ; M. F. Moffatt ; M. Nauck ; M. Novatchkova ; T. Nutile ; I. Olafsson ; P. T. Onundarson ; D. Parracciani ; B. W. Penninx ; L. Perseu ; A. Piga ; G. Pistis ; A. Pouta ; U. Puc ; O. Raitakari ; S. M. Ring ; A. Robino ; D. Ruggiero ; A. Ruokonen ; A. Saint-Pierre ; C. Sala ; A. Salumets ; J. Sambrook ; H. Schepers ; C. O. Schmidt ; H. H. Sillje ; R. Sladek ; J. H. Smit ; J. M. Starr ; J. Stephens ; P. Sulem ; T. Tanaka ; U. Thorsteinsdottir ; V. Tragante ; W. H. van Gilst ; L. J. van Pelt ; D. J. van Veldhuisen ; U. Volker ; J. B. Whitfield ; G. Willemsen ; B. R. Winkelmann ; G. Wirnsberger ; A. Algra ; F. Cucca ; A. P. d'Adamo ; J. Danesh ; I. J. Deary ; A. F. Dominiczak ; P. Elliott ; P. Fortina ; P. Froguel ; P. Gasparini ; A. Greinacher ; S. L. Hazen ; M. R. Jarvelin ; K. T. Khaw ; T. Lehtimaki ; W. Maerz ; N. G. Martin ; A. Metspalu ; B. D. Mitchell ; G. W. Montgomery ; C. Moore ; G. Navis ; M. Pirastu ; P. P. Pramstaller ; R. Ramirez-Solis ; E. Schadt ; J. Scott ; A. R. Shuldiner ; G. D. Smith ; J. G. Smith ; H. Snieder ; R. Sorice ; T. D. Spector ; K. Stefansson ; M. Stumvoll ; W. H. Tang ; D. Toniolo ; A. Tonjes ; P. M. Visscher ; P. Vollenweider ; N. J. Wareham ; B. H. Wolffenbuttel ; D. I. Boomsma ; J. S. Beckmann ; G. V. Dedoussis ; P. Deloukas ; M. A. Ferreira ; S. Sanna ; M. Uda ; A. A. Hicks ; J. M. Penninger ; C. Gieger ; J. S. Kooner ; W. H. Ouwehand ; N. Soranzo ; J. C. Chambers
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-12-12
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; Cell Cycle/genetics ; Cytokines/metabolism ; Drosophila melanogaster/genetics ; Erythrocytes/cytology/*metabolism ; Female ; Gene Expression Regulation/genetics ; *Genetic Loci ; *Genome-Wide Association Study ; Hematopoiesis/genetics ; Hemoglobins/genetics ; Humans ; Male ; Mice ; Organ Specificity ; *Phenotype ; Polymorphism, Single Nucleotide/genetics ; RNA Interference ; Signal Transduction/genetics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  8. 8
    Nora Franceschini; Claudia Giambartolomei; Paul S. de Vries; Chris Finan; Joshua C. Bis; Rachael P. Huntley; Ruth C. Lovering; Salman M. Tajuddin; Thomas W. Winkler; Misa Graff; Maryam Kavousi; Caroline Dale; Albert V. Smith; Edith Hofer; Elisabeth M. van Leeuwen; Ilja M. Nolte; Lingyi Lu; Markus Scholz; Muralidharan Sargurupremraj; Niina Pitkänen; Oscar Franzén; Peter K. Joshi; Raymond Noordam; Riccardo E. Marioni; Shih-Jen Hwang; Solomon K. Musani; Ulf Schminke; Walter Palmas; Aaron Isaacs; Adolfo Correa; Alan B. Zonderman; Albert Hofman; Alexander Teumer; Amanda J. Cox; André G. Uitterlinden; Andrew Wong; Andries J. Smit; Anne B. Newman; Annie Britton; Arno Ruusalepp; Bengt Sennblad; Bo Hedblad; Bogdan Pasaniuc; Brenda W. Penninx; Carl D. Langefeld; Christina L. Wassel; Christophe Tzourio; Cristiano Fava; Damiano Baldassarre; Daniel H. O’Leary; Daniel Teupser; Diana Kuh; Elena Tremoli; Elmo Mannarino; Enzo Grossi; Eric Boerwinkle; Eric E. Schadt; Erik Ingelsson; Fabrizio Veglia; Fernando Rivadeneira; Frank Beutner; Ganesh Chauhan; Gerardo Heiss; Harold Snieder; Harry Campbell; Henry Völzke; Hugh S. Markus; Ian J. Deary; J. Wouter Jukema; Jacqueline de Graaf; Jacqueline Price; Janne Pott; Jemma C. Hopewell; Jingjing Liang; Joachim Thiery; Jorgen Engmann; Karl Gertow; Kenneth Rice; Kent D. Taylor; Klodian Dhana; Lambertus A. L. M. Kiemeney; Lars Lind; Laura M. Raffield; Lenore J. Launer; Lesca M. Holdt; Marcus Dörr; Martin Dichgans; Matthew Traylor; Matthias Sitzer; Meena Kumari; Mika Kivimaki; Mike A. Nalls; Olle Melander; Olli Raitakari; Oscar H. Franco; Oscar L. Rueda-Ochoa; Panos Roussos; Peter H. Whincup; Philippe Amouyel; Philippe Giral; Pramod Anugu; Quenna Wong; Rainer Malik; Rainer Rauramaa; Ralph Burkhardt; Rebecca Hardy; Reinhold Schmidt; Renée de Mutsert; Richard W. Morris; Rona J. Strawbridge; S. Goya Wannamethee; Sara Hägg; Sonia Shah; Stela McLachlan; Stella Trompet; Sudha Seshadri; Sudhir Kurl; Susan R. Heckbert; Susan Ring; Tamara B. Harris; Terho Lehtimäki; Tessel E. Galesloot; Tina Shah; Ulf de Faire; Vincent Plagnol; Wayne D. Rosamond; Wendy Post; Xiaofeng Zhu; Xiaoling Zhang; Xiuqing Guo; Yasaman Saba; Yukinori Okada; Aniket Mishra; Loes Rutten-Jacobs; Anne-Katrin Giese; Sander W. van der Laan; Solveig Gretarsdottir; Christopher D. Anderson; Michael Chong; Hieab H. H. Adams; Tetsuro Ago; Peter Almgren; Philippe Amouyel; Hakan Ay; Traci M. Bartz; Oscar R. Benavente; Steve Bevan; Giorgio B. Boncoraglio; Robert D. Brown Jr.Adam S. Butterworth; Caty Carrera; Cara L. Carty; Daniel I. Chasman; Wei-Min Chen; John W. Cole; Ioana Cotlarciuc; Carlos Cruchaga; John Danesh; Paul I. W. de Bakker; Anita L. De; Stefano; Marcel den Hoed; Qing Duan; Stefan T. Engelter; Guido J. Falcone; Rebecca F. Gottesman; Raji P. Grewal; Stefan Gustafsson; Jeffrey Haessler; Tamara B. Harris; Ahamad Hassan; Aki S. Havulinna; Elizabeth G. Holliday; George Howard; Fang-Chi Hsu; Hyacinth I. Hyacinth; M. Arfan Ikram; Marguerite R. Irvin; Xueqiu Jian; Jordi Jiménez-Conde; Julie A. Johnson; J. Wouter Jukema; Masahiro Kanai; Keith L. Keene; Brett M. Kissela; Dawn O. Kleindorfer; Charles Kooperberg; Michiaki Kubo; Leslie Lange; Carl D. Langefeld; Claudia Langenberg; Jin-Moo Lee; Robin Lemmens; Didier Leys; Cathryn M. Lewis; Wei-Yu Lin; Arne G. Lindgren; Erik Lorentzen; Patrik K. Magnusson; Jane Maguire; Ani Manichaikul; Patrick F. McArdle; James F. Meschia; Thomas H. Mosley; Toshiharu Ninomiya; Martin J. O’Donnell; Sara L. Pulit; Kristiina Rannikmäe; Alexander P. Reiner; Kathryn M. Rexrode; Stephen S. Rich; Paul M. Ridker; Natalia S. Rost; Peter M. Rothwell; Tatjana Rundek; Ralph L. Sacco; Saori Sakaue; Michele M. Sale; Veikko Salomaa; Bishwa R. Sapkota; Reinhold Schmidt; Carsten O. Schmidt; Ulf Schminke; Pankaj Sharma; Agnieszka Slowik; Cathie L. M. Sudlow; Christian Tanislav; Turgut Tatlisumak; Vincent N. S. Thijs; Gudmar Thorleifsson; Unnur Thorsteinsdottir; Steffen Tiedt; Stella Trompet; Matthew Walters; Nicholas J. Wareham; Sylvia Wassertheil-Smoller; Kerri L. Wiggins; Qiong Yang; Salim Yusuf; Tomi Pastinen; Arno Ruusalepp; Eric E. Schadt; Simon Koplev; Veronica Codoni; Mete Civelek; Nick Smith; David A. Trégouët; Ingrid E. Christophersen; Carolina Roselli; Steven A. Lubitz; Patrick T. Ellinor; E. Shyong Tai; Jaspal S. Kooner; Norihiro Kato; Jiang He; Pim van der Harst; Paul Elliott; John C. Chambers; Fumihiko Takeuchi; Andrew D. Johnson; Dharambir K. Sanghera; Olle Melander; Christina Jern; Daniel Strbian; Israel Fernandez-Cadenas; W. T. Longstreth Jr; Arndt Rolfs; Jun Hata; Daniel Woo; Jonathan Rosand; Guillaume Pare; Danish Saleheen; Kari Stefansson; Bradford B. Worrall; Steven J. Kittner; Joanna M. M. Howson; Yoichiro Kamatani; Abbas Dehghan; Adrie Seldenrijk; Alanna C. Morrison; Anders Hamsten; Bruce M. Psaty; Cornelia M. van Duijn; Deborah A. Lawlor; Dennis O. Mook-Kanamori; Donald W. Bowden; Helena Schmidt; James F. Wilson; James G. Wilson; Jerome I. Rotter; Joanna M. Wardlaw; John Deanfield; Julian Halcox; Leo-Pekka Lyytikäinen; Markus Loeffler; Michele K. Evans; Stéphanie Debette; Steve E. Humphries; Uwe Völker; Vilmundur Gudnason; Aroon D. Hingorani; Johan L. M. Björkegren; Juan P. Casas; Christopher J. O’Donnell
    Nature Publishing Group (NPG)
    Published 2018
    Staff View
    Publication Date:
    2018-12-04
    Publisher:
    Nature Publishing Group (NPG)
    Electronic ISSN:
    2041-1723
    Topics:
    Biology
    Chemistry and Pharmacology
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  9. 9
    Staff View
    Publication Date:
    2018-12-05
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    0034-6861
    Electronic ISSN:
    1539-0756
    Topics:
    Physics
    Keywords:
    Atomic, molecular, and optical physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  10. 10
    M. Schulte, N. Lörch, P. O. Schmidt, and K. Hammerer
    American Physical Society (APS)
    Published 2018
    Staff View
    Publication Date:
    2018-12-06
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    1050-2947
    Electronic ISSN:
    1094-1622
    Topics:
    Physics
    Keywords:
    Quantum optics, physics of lasers, nonlinear optics, classical optics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  11. 11
    F. Wolf ; Y. Wan ; J. C. Heip ; F. Gebert ; C. Shi ; P. O. Schmidt
    Nature Publishing Group (NPG)
    Published 2016
    Staff View
    Publication Date:
    2016-02-09
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  12. 12
    Staff View
    Publication Date:
    2011-07-19
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Angiosperms/microbiology ; Basidiomycota/classification/enzymology/*genetics/physiology ; *Biodiversity ; Biological Evolution ; Biota ; Cell Wall/*metabolism ; Coniferophyta/microbiology ; Coriolaceae/enzymology/genetics/physiology ; Gene Expression Profiling ; Genes, Fungal ; Genomics ; Lignin/metabolism ; Mycorrhizae/enzymology/*genetics/physiology ; Oxidoreductases/genetics/metabolism ; Peroxidases/genetics/metabolism ; Phylogeny ; Proteome ; Symbiosis ; Trees/*microbiology ; Wood/metabolism/*microbiology
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  13. 13
    A. Stute ; B. Casabone ; P. Schindler ; T. Monz ; P. O. Schmidt ; B. Brandstatter ; T. E. Northup ; R. Blatt
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-05-25
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  14. 14
    Staff View
    Publication Date:
    2018-01-20
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Electronic ISSN:
    2375-2548
    Topics:
    Natural Sciences in General
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  15. 15
    Zeibich, L., Schmidt, O., Drake, H. L.
    The American Society for Microbiology (ASM)
    Published 2018
    Staff View
    Publication Date:
    2018-05-18
    Publisher:
    The American Society for Microbiology (ASM)
    Print ISSN:
    0099-2240
    Electronic ISSN:
    1098-5336
    Topics:
    Biology
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  16. 16
    Schieker, S. ; Schmidt, O. G. ; Eberl, K.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The growth of 2.4 monolayers Ge on 0.2 monolayers of predeposited C on Si results in the formation of 15 nm size Ge islands. Fifty stacked layers of these C-induced Ge dots are grown on Si (001) at 460 °C. Different pieces of the wafer are annealed at temperatures between 460 and 950 °C and for times ranging from 1 to 20 min at 850 °C. For temperatures higher than 550 °C, a pronounced energy blueshift and an evolution from one broad photoluminescence peak to two well-resolved lines reflect a gradual transition from quantum dot states to quantum well-like states. As transmission electron microscopy images illustrate, diffusion processes completely smear out the sharp interfaces between the dots and the surrounding Si. An activation energy of only 1.6 eV and temperature-dependent diffusion coefficients are derived from simple model calculations. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Schmidt, O. G. ; Lange, C. ; Eberl, K.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    A very small amount of pre-deposited C on a Si substrate causes island formation after epitaxial growth of less than 2 monolayers Ge. These C-induced Ge dots can be as small as 10 nm in lateral size and 1 nm in height. Their areal density is 1011 cm−2. Intense photoluminescence signal from these small Ge quantum dots is observed reaching a maximum for 2.1±0.3 monolayers of Ge. In the initial stages of island formation, the optical transition of the wetting layer is blue-shifted by strain compensation effects. We propose spatially indirect mechanisms of radiative recombination between electrons confined in the underlying wetting layer and holes confined in the Ge islands. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Kirstaedter, N. ; Schmidt, O. G. ; Ledentsov, N. N. ; Bimberg, D. ; Ustinov, V. M. ; Egorov, A. Yu. ; Zhukov, A. E. ; Maximov, M. V. ; Kop'ev, P. S. ; Alferov, Zh. I.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We present gain measurements and calculations for InAs/GaAs quantum dot injection lasers. Measurements of the modal gain and estimation of the confinement factor by transmission electron microscopy yield an exceptionally large material gain of 6.8(±1)×104 cm−1 at 80 A cm−2. Calculations including realistic quantum dot energy levels, dot size fluctuation, nonthermal coupling of carriers in different dots, and band filling effects corroborate this result. A large maximum differential gain of 2×10−12 cm2 at 20 A cm−2 is found. The width of the gain spectrum is determined by participation of excited quantum dot states. We record a low transparency current density of 20 A cm−2. All experiments are carried out at liquid nitrogen temperature. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  19. 19
    Duschl, R. ; Schmidt, O. G. ; Winter, W. ; Eberl, K.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    High quality Ge/Ge1−yCy superlattices with nominal carbon contents of 1.2% and 2.1% were grown by molecular beam epitaxy on Ge(001). In transmission electron microscopy the layers are planar and perfectly pseudomorphic without any extended defects observable. The infrared absorption line at 529 cm−1 is attributed to the local vibrational mode of substitutional carbon in germanium. However, in contrast to Si1−yCy alloys where almost 100% of the C is substitutional under optimized growth conditions, x-ray diffraction measurements indicate that the efficiency of carbon incorporation onto substitutional sites is only about 30% for low temperature growth at TS=200 °C. It reduces further for higher growth temperatures to only about 10% at TS=300 °C. Post-growth annealing experiments indicate thermal stability up to 450 °C. Annealing at higher temperature results in a reduction of substitutional carbon content. As in the case of Si1−yCy alloys the built-in strain is relaxed by C diffusion and not by nucleation of misfit dislocation. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  20. 20
    Schmidt, O. G. ; Schieker, S. ; Eberl, K.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Pregrowth of a small amount of C on a Si(001) substrate induces small Ge quantum dots. We present a structure where an initial layer of these C-induced Ge dots is followed by five layers of four monolayers Ge, each layer separated by a 2 nm thick Si spacer. Although the critical thickness for planar growth of a single Ge layer is not exceeded, a vertically aligned stack of Ge islands is formed. If we substitute the pure Ge layers by a fivefold stack of C-induced Ge dots, no vertical island correlation is observed. The phenomenon is explained by the strongly kinetically limited process of C-induced Ge island formation, itself. Photoluminescence experiments on stacks of 0.16 monolayers C/2.2 monolayers Ge dots, where we systematically varied the Si spacer thickness and the number of dot layers, suggest that the average dot size increases if the Si spacer is kept thinner than 10 nm. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses