R
Ramzy Daou
Researcher at Centre national de la recherche scientifique
Publications - 59
Citations - 3662
Ramzy Daou is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Fermi surface & Superconductivity. The author has an hindex of 29, co-authored 55 publications receiving 3240 citations. Previous affiliations of Ramzy Daou include École Polytechnique Fédérale de Lausanne & Max Planck Society.
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Journal ArticleDOI
Broken rotational symmetry in the pseudogap phase of a high- T c superconductor
Ramzy Daou,Johan Juul Chang,David LeBoeuf,O. Cyr-Choinière,Francis Laliberte,Nicolas Doiron-Leyraud,Brad Ramshaw,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Walter Hardy,Walter Hardy,Louis Taillefer,Louis Taillefer +14 more
TL;DR: In this paper, it was shown that the pseudogap phase is an electronic state that strongly breaks four-fold rotational symmetry in YBa(2)Cu(3)O(y) that sets in precisely at T* throughout the doping phase diagram.
Journal ArticleDOI
Electron pockets in the Fermi surface of hole-doped high-Tc superconductors.
David LeBoeuf,Nicolas Doiron-Leyraud,Julien Levallois,Ramzy Daou,J.-B. Bonnemaison,Nigel E. Hussey,Luis Balicas,Brad Ramshaw,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Walter Hardy,Walter Hardy,S. Adachi,Cyril Proust,Louis Taillefer,Louis Taillefer +17 more
TL;DR: The observation of a negative Hall resistance in the magnetic-field-induced normal state of YBa2Cu3Oy and Y ba2Cu4O8, which reveals that these pockets are electron-like rather than hole-like, is reported, suggesting that a Fermi surface reconstruction also occurs in those materials, pointing to a generic property of high-transition-temperature (Tc) superconductors.
Journal Article
Electron pockets in the Fermi surface of hole-doped high-$T$c superconductors
David Leboeuf,Nicolas Doiron-Leyraud,Julien Levallois,Ramzy Daou,J.-B. Bonnemaison,Nigel E. Hussey,Luis Balicas,Brad Ramshaw,Ruixing Liang,Doug Bonn,Walter Hardy,Seiji Adachi,Cyril Proust,Louis Taillefer +13 more
Journal ArticleDOI
Linear temperature dependence of resistivity and change in the Fermi surface at the pseudogap critical point of|[nbsp]|a|[nbsp]|high-Tc superconductor
Ramzy Daou,Nicolas Doiron-Leyraud,David LeBoeuf,Shiyan Li,Francis Laliberte,O. Cyr-Choinière,Younjung Jo,Luis Balicas,Jiaqiang Yan,J.-S. Zhou,J. B. Goodenough,Louis Taillefer,Louis Taillefer +12 more
TL;DR: In this paper, the pseudogap phase ends at a quantum critical point located inside the superconducting dome in the phase diagram of cuprates, which is known as the critical point.
Journal ArticleDOI
Lifshitz critical point in the cuprate superconductor YBa2Cu3Oy from high-field Hall effect measurements
David LeBoeuf,Nicolas Doiron-Leyraud,B. Vignolle,Mike Sutherland,Brad Ramshaw,Julien Levallois,Ramzy Daou,Francis Laliberte,O. Cyr-Choinière,Johan Chang,Younjung Jo,Luis Balicas,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Walter Hardy,Walter Hardy,Cyril Proust,Cyril Proust,Louis Taillefer,Louis Taillefer +21 more
TL;DR: In this article, the Hall coefficient of cuprate superconductor YBa 2Cu3Oy was measured in magnetic fields up to 60 T for a hole concentration p from 0.078 to 0.152 in the underdoped regime.