Fermi surface and pseudogap evolution in a cuprate superconductor
| Autor: | Jennifer Hoffman, Hiroshi Ikuta, Tsunehiro Takeuchi, Michael M. Yee, Robert S. Markiewicz, Michael Boyer, Ilija Zeljkovic, Subir Sachdev, Yi Yin, W. D. Wise, Eric Hudson, Takeshi Kondo, Yang He, Arun Bansil, Kamalesh Chatterjee, Martin Zech, Tess Williams, Anjan Soumyanarayanan, Peter Mistark |
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| Rok vydání: | 2014 |
| Předmět: |
Superconductivity
Quantum phase transition Physics Multidisciplinary Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Condensed Matter - Superconductivity Transition temperature FOS: Physical sciences Fermi surface Electronic structure law.invention Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons law Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Cuprate Scanning tunneling microscope Pseudogap |
| Zdroj: | Science (New York, N.Y.). 344(6184) |
| ISSN: | 1095-9203 |
| Popis: | The unclear relationship between cuprate superconductivity and the pseudogap state remains an impediment to understanding the high transition temperature (Tc) superconducting mechanism. Here we employ magnetic-field-dependent scanning tunneling microscopy to provide phase-sensitive proof that d-wave superconductivity coexists with the pseudogap on the antinodal Fermi surface of an overdoped cuprate. Furthermore, by tracking the hole doping (p) dependence of the quasiparticle interference pattern within a single Bi-based cuprate family, we observe a Fermi surface reconstruction slightly below optimal doping, indicating a zero-field quantum phase transition in notable proximity to the maximum superconducting Tc. Surprisingly, this major reorganization of the system's underlying electronic structure has no effect on the smoothly evolving pseudogap. Comment: For higher-resolution figures, please see the published version |
| Databáze: | OpenAIRE |
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