ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

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Digitale Medien

Ueber die Einwirkung schwefliger Säure auf Isonitrosoverbindungen (1891)

Schmidt, M.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 44 (1891), S. 513-535

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ISSN: 0021-8383

Schlagwort(e): Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/prac.18910440145

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Digitale Medien

Di-cyclopentadienyl-technetiumhydrid (1967)

Fischer, E. O. ; Schmidt, M. W.

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 79 (1967), S. 99-100

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19670790210

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3

Digitale Medien

Occurrence of Cyclododecasulfur in Sulfur Melts (1967)

Schmidt, M. ; Block, H.-D.

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 6 (1967), S. 955-956

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ISSN: 0570-0833

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/anie.196709552

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Digitale Medien

Dicyclopentadienyltechnetium Hydride (1967)

Fischer, E. O. ; Schmidt, M. W.

Weinheim : Wiley-Blackwell

Angewandte Chemie International Edition in English 6 (1967), S. 93-93

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ISSN: 0570-0833

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/anie.196700931

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5

Digitale Medien

II. Ueber Naphtazarin (1895)

Zincke, Th. ; Schmidt, M.

Weinheim : Wiley-Blackwell

Liebigs Annalen 286 (1895), S. 27-57

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ISSN: 0075-4617

Schlagwort(e): Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jlac.18952860103

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6

Digitale Medien

Ueber Halogenadditionsprodukte von α- und β-Naphtochinon (1894)

Zincke, Th. ; Schmidt, M.

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 27 (1894), S. 2753-2762

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ISSN: 0365-9496

Schlagwort(e): Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/cber.18940270321

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Visualizing weakly bound surface Fermi arcs and their correspondence to bulk Weyl fermions (2016)

Batabyal, R., Morali, N., Avraham, N., Sun, Y., Schmidt, M., Felser, C., Stern, A., Yan, B., Beidenkopf, H.

American Association for the Advancement of Science (AAAS)

In: Science Advances

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Publikationsdatum: 2016-08-21

Beschreibung: Fermi arcs are the surface manifestation of the topological nature of Weyl semimetals, enforced by the bulk-boundary correspondence with the bulk Weyl nodes. The surface of tantalum arsenide, similar to that of other members of the Weyl semimetal class, hosts nontopological bands that obscure the exploration of this correspondence. We use the spatial structure of the Fermi arc wave function, probed by scanning tunneling microscopy, as a spectroscopic tool to distinguish and characterize the surface Fermi arc bands. We find that, as opposed to nontopological states, the Fermi arc wave function is weakly affected by the surface potential: it spreads rather uniformly within the unit cell and penetrates deeper into the bulk. Fermi arcs reside predominantly on tantalum sites, from which the topological bulk bands are derived. Furthermore, we identify a correspondence between the Fermi arc dispersion and the energy and momentum of the bulk Weyl nodes that classify this material as topological. We obtain these results by introducing an analysis based on the role the Bloch wave function has in shaping quantum electronic interference patterns. It thus carries broader applicability to the study of other electronic systems and other physical processes.

Digitale ISSN: 2375-2548

Thema: Allgemeine Naturwissenschaft

Publiziert von American Association for the Advancement of Science (AAAS)

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Nearly free electrons in a 5d delafossite oxide metal (2015)

Kushwaha, P., Sunko, V., Moll, P. J. W., Bawden, L., Riley, J. M., Nandi, N., Rosner, H., Schmidt, M. P., Arnold, F., Hassinger, E., Kim, T. K., Hoesch, M., Mackenzie, A. P., King, P. D. C.

American Association for the Advancement of Science (AAAS)

In: Science Advances

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Publikationsdatum: 2015-10-25

Beschreibung: Understanding the role of electron correlations in strong spin-orbit transition-metal oxides is key to the realization of numerous exotic phases including spin-orbit–assisted Mott insulators, correlated topological solids, and prospective new high-temperature superconductors. To date, most attention has been focused on the 5 d iridium-based oxides. We instead consider the Pt-based delafossite oxide PtCoO 2 . Our transport measurements, performed on single-crystal samples etched to well-defined geometries using focused ion beam techniques, yield a room temperature resistivity of only 2.1 microhm·cm (μ-cm), establishing PtCoO 2 as the most conductive oxide known. From angle-resolved photoemission and density functional theory, we show that the underlying Fermi surface is a single cylinder of nearly hexagonal cross-section, with very weak dispersion along k z . Despite being predominantly composed of d -orbital character, the conduction band is remarkably steep, with an average effective mass of only 1.14 m e . Moreover, the sharp spectral features observed in photoemission remain well defined with little additional broadening for more than 500 meV below E F , pointing to suppressed electron-electron scattering. Together, our findings establish PtCoO 2 as a model nearly-free–electron system in a 5 d delafossite transition-metal oxide.

Digitale ISSN: 2375-2548

Thema: Allgemeine Naturwissenschaft