Evidence for Eight-Node Mixed-Symmetry Superconductivity in a Correlated Organic Metal

Guterding, Daniel; Diehl, Sandra; Altmeyer, Michaela; Methfessel, Torsten; Tutsch, Ulrich; Schubert, Harald; Lang, Michael; Müller, Jens; Huth, Michael; Jeschke, Harald O.; Valentí, Roser; Jourdan, Martin; Elmers, H. J.

doi:10.1103/physrevlett.116.237001

Cited by 39 publications

(83 citation statements)

References 57 publications

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“…This is not so easy as has been discussed in refs. . For STS one typically needs higher tunneling currents comprising lateral resolution to some extent.…”

Section: Low Temperature Density Of States and Superconductivity In Omentioning

confidence: 99%

Section: Low Temperature Density Of States and Superconductivity In Omentioning

confidence: 99%

Section: Low Temperature Density Of States and Superconductivity In Omentioning

confidence: 99%

“…This article reviews recent results obtained with X‐ray absorption spectroscopy and scanning tunneling microscopy and spectroscopy concerning the charge transfer mechanism, which is the basic origin of the interesting electronic properties of charge transfer salts, and concerning superconducting properties that is the one of the most fascinating electronic properties of these systems. The article is organized in two parts: in the first part, we review in depth the charge transfer mechanism for the model system dithieno‐benzo‐ditiophene‐F 4 ‐tetracyano‐quinodimethane (DTBDT‐F 4 TCNQ).…”

Section: Introductionmentioning

confidence: 99%

“…Finally, we discuss results from ref. concerning the structure of the superconducting order parameter.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Many‐Body Effects in the Quasi‐Two‐Dimensional Electronic System of Organic Charge‐Transfer Salts

Mashoff

Regel

Medjanik

et al. 2019

Physica Status Solidi (b)

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This article reviews recent progress in the understanding of many‐body effects in the quasi‐two‐dimensional electronic system of organic charge‐transfer salts using element‐selective X‐ray absorption and scanning tunneling spectroscopy techniques. A few previously unpublished topographical scanning tunneling microscopy images illustrate structural consequences of the charge transfer mechanism. The first part of the review focuses on the understanding of the charge transfer between acceptor and donor molecules in general. Results for dithiophene‐based organic semiconductors as a representative model system is reviewed that is relevant for electronic applications, too. Experimental results are used to develop appropriate calculation schemes with large predictive power. The combination of experiment and theory reveals a charge transfer mechanism that is more complex than just the interaction of single HOMO and LUMO states in donor and acceptor molecules. The second part of the review highlights the emergence of superconductivity as a result of the charge transfer leaving strongly correlated and partly occupied electronic states at the Fermi level. The authors review recent experimental results for the κ‐phase organic superconductors obtained with scanning tunneling spectroscopy and compare the temperature‐dependent local density of states function with theoretical approaches. The superconducting order parameter for κ‐(ET)2Cu[N(CN)2]Br reveals an eight‐node gap structure resulting from a strongly anisotropic mixed‐symmetry superconducting gap.

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“…This is not so easy as has been discussed in refs. . For STS one typically needs higher tunneling currents comprising lateral resolution to some extent.…”

Section: Low Temperature Density Of States and Superconductivity In Omentioning

confidence: 99%

Section: Low Temperature Density Of States and Superconductivity In Omentioning

confidence: 99%

Section: Low Temperature Density Of States and Superconductivity In Omentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Finally, we discuss results from ref. concerning the structure of the superconducting order parameter.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of Many‐Body Effects in the Quasi‐Two‐Dimensional Electronic System of Organic Charge‐Transfer Salts

Mashoff

Regel

Medjanik

et al. 2019

Physica Status Solidi (b)

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Organic quantum materials: A review

Wang

Zhang

2023

SmartMat

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Interests in organic quantum materials (OQMs) have been explosively growing in the field of condensed physics of matter due to their rich chemistry and unique quantum properties. They are strongly correlated systems and show novel electromagnetic performance such as high‐temperature superconducting, quantum sensing, spin electronics, quantum dots, topological insulating, quantum Hall effects, spin liquids, qubits, and so forth, which exhibit promising prospects in information communication and thus facilitate the construction of a modern intelligent society. This article reviews recent developments in the research on the electromagnetic characteristics of OQMs. We mainly give an overview on the progress of superconductors and quantum spin liquids based on organic materials and describe their possible mechanisms. Numerous experimental findings exhibit new exciton interactions and provide insights into exotic electronic properties. Finally, their association and strategies for realizing multiple quantum states in one system are discussed.

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Superconductivity of Organic Charge-Transfer Salts

Wosnitza

2019

J Low Temp Phys

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Evidence for Eight-Node Mixed-Symmetry Superconductivity in a Correlated Organic Metal

Cited by 39 publications

References 57 publications

Investigation of Many‐Body Effects in the Quasi‐Two‐Dimensional Electronic System of Organic Charge‐Transfer Salts

Investigation of Many‐Body Effects in the Quasi‐Two‐Dimensional Electronic System of Organic Charge‐Transfer Salts

Organic quantum materials: A review

Superconductivity of Organic Charge-Transfer Salts

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