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1. |
Record Nr. |
UNINA9910595032003321 |
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Autore |
Restrepo Francisco |
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Titolo |
Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors / / by Francisco Restrepo |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2022 |
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ISBN |
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9783031109799 |
9783031109782 |
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Edizione |
[1st ed. 2022.] |
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Descrizione fisica |
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1 online resource (113 pages) |
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Collana |
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Springer Theses, Recognizing Outstanding Ph.D. Research, , 2190-5061 |
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Disciplina |
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Soggetti |
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Superconductivity |
Superconductors |
Superconductors - Chemistry |
Spectrum analysis |
Quantum electrodynamics |
Spectroscopy |
Quantum Electrodynamics, Relativistic and Many-body Calculations |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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"Doctoral Thesis accepted by the University of Illinois at Chicago, USA." |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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Chapter 1. Introduction -- Chapter 2. Superconductivity and the cuprates -- Chapter 3. Angle-Resolved Photoemission Spectroscopy -- Chapter 4. Experimental Details -- Chapter 5. Results -- Chapter 6. Conclusions. |
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Sommario/riassunto |
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This thesis makes significant advances towards an understanding of superconductivity in the cuprate family of unconventional, high-temperature superconductors. Even though the high-temperature superconductors were discovered over 35 years ago, there is not yet a general consensus on an acceptable theory of superconductivity in these materials. One of the early proposals suggested that collective magnetic excitations of the conduction electrons could lead them to form pairs, which in turn condense to form the superconducting state at a critical temperature Tc. Quantitative calculations of Tc using |
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experimental data were, however, not available to verify the applicability of this magnetic mechanism. In this thesis, the author constructed an angle-resolved photoemission apparatus that could provide sufficiently accurate data of the electronic excitation spectra of samples in the normal state, data which was furthermore unusually devoid of any surface contamination. The author also applied the Bethe-Salpeter method to his uncommonly pristine and precise normal state data, and was able to predict the approximate superconducting transition temperatures of different samples. This rare combination of experiment with sophisticated theoretical calculations leads to the conclusion that antiferromagnetic correlations are a viable candidate for the pairing interaction in the cuprate superconductors. |
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2. |
Record Nr. |
UNINA9910741182303321 |
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Autore |
Gutbrod Hans |
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Titolo |
Ethics of Political Commemoration : Towards a New Paradigm / / by Hans Gutbrod, David Wood |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Palgrave Macmillan, , 2023 |
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ISBN |
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Edizione |
[1st ed. 2023.] |
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Descrizione fisica |
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1 online resource (172 pages) |
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Collana |
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Twenty-first Century Perspectives on War, Peace, and Human Conflict, , 2945-6061 |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Peace |
Collective memory |
Communication in politics |
Political ethics |
Peace and Conflict Studies |
Memory Studies |
Political Communication |
Political Ethics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Chapter 1. Introduction: Towards an Ethics of Political Commemoration -- Chapter 2: Ius ad Memoriam: What is Deserving of Commemoration? -- Chapter 3: Ius in Memoria: How Should we Commemorate? -- Chapter 4: Commemoration as Path for Conflict Transformation -- Chapter 5: Applying the Framework and its Limitations -- Chapter 6: Conclusion: Roadmap for the Paradigm. |
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Sommario/riassunto |
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This book proposes a new Ethics of Political Commemoration adapted from the Just War tradition, reflecting that remembrance is often conducted with political – and even coercive – intent. With its Ius ad Memoriam (what to commemorate) and Ius in Memoria (how to commemorate) criteria, the framework looks to guide debates that are currently inchoate so that remembrance of the past can transform relationships in the present and build a shared future. Offering a moral argument with memorable illustrations, Gutbrod and Wood draw on experiences from Armenia, Georgia, Ireland, Lebanon, and Libya, while connecting to mainstream debates in Western Europe and the United States. Bringing together an ethical tradition with the practice of conflict transformation, the framework fuses two perspectives that enrich each other. The book, in providing a first systematic presentation of the ethics, seeks to engage citizens and scholars, and help those who work to transform conflicts. . |
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