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644 results on '"Diekmann, J."'

2. Small quenches and thermalization

Author

Kennes, D. M., Pommerening, J. C., Diekmann, J., Karrasch, C., and Meden, V.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

We study the expectation values of observables and correlation functions at long times after a global quantum quench. Our focus is on metallic (`gapless') fermionic many-body models and small quenches. The system is prepared in an eigenstate of an initial Hamiltonian, and the time evolution is performed with a final Hamiltonian which differs from the initial one in the value of one global parameter. We first derive general relations between time-averaged expectation values of observables as well as correlation functions and those obtained in an eigenstate of the final Hamiltonian. Our results are valid to linear and quadratic order in the quench parameter g and generalize prior insights in several essential ways. This allows us to develop a phenomenology for the thermalization of local quantities up to a given order in g. Our phenomenology is put to a test in several case studies of one-dimensional models representative of four distinct classes of Hamiltonians: quadratic ones, effectively quadratic ones, those characterized by an extensive set of (quasi-) local integrals of motion, and those for which no such set is known (and believed to be nonexistent). We show that for each of these models, all observables and correlation functions thermalize to linear order in g. The more local a given quantity, the longer the linear behavior prevails when increasing g. Typical local correlation functions and observables for which the term O(g) vanishes thermalize even to order g^2. Our results show that lowest order thermalization of local observables is an ubiquitous phenomenon even in models with extensive sets of integrals of motion., Comment: version as published

Published
2016
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4. Hh-Blutgruppensystem

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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7. Open-circuit and short-circuit loss management in wide-gap perovskite p-i-n solar cells

Author

Caprioglio, P, Smith, JA, Oliver, RDJ, Dasgupta, A, Choudhary, S, Farrar, MD, Ramadan, AJ, Lin, Y-H, Christoforo, MG, Ball, JM, Diekmann, J, Thiesbrummel, J, Zaininger, K-A, Shen, X, Johnston, MB, Neher, D, Stolterfoht, M, and Snaith, HJ

Subjects
Multidisciplinary, General Physics and Astronomy, General Chemistry, General Biochemistry, Genetics and Molecular Biology
Abstract

In this work, we couple theoretical and experimental approaches to understand and reduce the losses of wide bandgap Br-rich perovskite pin devices at open-circuit voltage (VOC) and short-circuit current (JSC) conditions. A mismatch between the internal quasi-Fermi level splitting (QFLS) and the external VOC is detrimental for these devices. We demonstrate that modifying the perovskite top-surface with guanidinium-Br and imidazolium-Br forms a low-dimensional perovskite phase at the n-interface, suppressing the QFLS-VOC mismatch, and boosting the VOC. Concurrently, the use of an ionic interlayer or a self-assembled monolayer at the p-interface reduces the inferred field screening induced by mobile ions at JSC, promoting charge extraction and raising the JSC. The combination of the n- and p-type optimizations allows us to approach the thermodynamic potential of the perovskite absorber layer, resulting in 1 cm2 devices with performance parameters of VOCs up to 1.29 V, fill factors above 80% and JSCs up to 17 mA/cm2, in addition to a thermal stability T80 lifetime of more than 3500 h at 85 °C.

Published
2023

8. Isoagglutinine

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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11. Ii-Blutgruppensystem

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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13. H-Substanz

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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14. Granulozytäre Antigene

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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16. HLA-Antikörper

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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20. Enzymtest

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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27. CDE-Nomenklatur

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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28. Zetapotenzial

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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29. Xg-Blutgruppensystem

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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30. Vel-Antigen

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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31. Autologe Kontrolle

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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33. Transfusionsgesetz

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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34. Bombay-Phänotyp

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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35. Blutgruppenbestimmung

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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37. Anti-D-Prophylaxe

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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40. Tamm-Horsfall-Protein

Author

Guder, W. G., Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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41. MNS-Blutgruppensystem

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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45. LISS

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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46. Rhesus-Faktor

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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48. Komplette Antikörper

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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49. Salivatestung

Author

Kleesiek, K., Götting, C., Diekmann, J., Dreier, J., Schmidt, M., Gressner, Axel M., editor, and Arndt, Torsten, editor

Published
2019
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