31 research outputs found

    Kiri Theodor Bussi'le, Lübeck

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    http://tartu.ester.ee/record=b1868490~S1*es

    Ultrafast measurements of mode-specific deformation potentials of Bi2_2Te3_3 and Bi2_2Se3_3

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    Quantifying electron-phonon interactions for the surface states of topological materials can provide key insights into surface-state transport, topological superconductivity, and potentially how to manipulate the surface state using a structural degree of freedom. We perform time-resolved x-ray diffraction (XRD) and angle-resolved photoemission (ARPES) measurements on Bi2_2Te3_3 and Bi2_2Se3_3, following the excitation of coherent A1g_{1g} optical phonons. We extract and compare the deformation potentials coupling the surface electronic states to local A1g_{1g}-like displacements in these two materials using the experimentally determined atomic displacements from XRD and electron band shifts from ARPES.We find the coupling in Bi2_2Te3_3 and Bi2_2Se3_3 to be similar and in general in agreement with expectations from density functional theory. We establish a methodology that quantifies the mode-specific electron-phonon coupling experimentally, allowing detailed comparison to theory. Our results shed light on fundamental processes in topological insulators involving electron-phonon coupling

    Johannis Kirchmanni Rudimenta Logicae Peripateticae

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    Johannis Kirchmanni Lubecensis De funeribus Romanorum libri quatuor

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    Obra perteneciente al Fondo Antiguo de la Biblioteca de la USA

    Rudimenta Rhetoricae

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    RUDIMENTA RHETORICAE Rudimenta Rhetoricae ( - ) Einband ( - ) Titelseite (1) Liber I. De Inventione. (3) Liber II. De Dispositione. (18) Liber III. De Elocutione. (27) Index (83) Sequuntur Formulae ex optimis Authoribus excerptae. (85

    Johan. Kirchmanni Lubecensis De funeribus Romanorum libri quatuor :

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    Obra perteneciente al Fondo Antiguo de la Biblioteca de la USA

    Iohan. Kirchmanni Lubecensis De funeribus Romanorum libri quatuor cum appendice ... : accessit et Funus parasiticum

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    In funere Pauli Merulae oratioJohann Kirchmann. Nicolas Rigaul

    Disputatio Politica De Legatis, Et Legationum Iure

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