Electronic Band Structure of Ferro-Pnictide Superconductors from ARPES Experiment
A. A. Kordyuk,A. A. Kordyuk,V. B. Zabolotnyy,Daniil Evtushinsky,Alexander Yaresko,Bernd Büchner,Sergey Borisenko +6 more
TLDR
In this article, the differences between the measured and calculated electronic band structures look insignificant, but can be crucial for understanding of the mechanism of high temperature superconductivity in iron-based superconductors.Abstract:
ARPES experiments on iron based superconductors show that the differences between the measured and calculated electronic band structures look insignificant, but can be crucial for understanding of the mechanism of high temperature superconductivity. Here, we focus on those differences for 111 and 122 compounds and discuss the observed correlation of the experimental band structure with the superconductivity.read more
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Pseudogap from ARPES experiment: three gaps in cuprates and topological superconductivity
TL;DR: In this paper, the authors present a contribution dealing with the pseudogap, focusing on results from angle resolved photoemission spectroscopy (ARPES) and end up with the conclusion that the pseudodogap in cuprates is a complex phenomenon which includes at least three different ''intertwined'' orders: spin and charge density waves and preformed pairs, which appears in different parts of the phase diagram.
Journal ArticleDOI
Pseudogap from ARPES experiment: Three gaps in cuprates and topological superconductivity (Review Article)
TL;DR: In this article, the pseudogap in cuprates has been investigated using angle resolved photoemission spectroscopy (ARPES) and it was shown that spin and charge density wave patterns in the cuprates are at least three different "intertwined" orders: spin, charge and preformed pairs, which appear in different parts of the phase diagram.
Journal ArticleDOI
Intrinsic arrested nanoscale phase separation near a topological Lifshitz transition in strongly correlated two-band metals
Antonio Bianconi,Nicola Poccia,A. O. Sboychakov,Alexander L. Rakhmanov,Alexander L. Rakhmanov,K. I. Kugel +5 more
TL;DR: In this article, the phase separation diagram of a two-band Hubbard model for strongly correlated charge carriers is shown to occur in a particular range in the vicinity of the topological Lifshitz transition, where the Fermi energy crosses the bottom of the narrow band and a new sheet of the surface related to the charge carriers of the second band comes into play.
Journal ArticleDOI
Extraordinary Doping Effects on Quasiparticle Scattering and Bandwidth in Iron-Based Superconductors
Z. R. Ye,Yue-Yu Zhang,F. Chen,Minjun Xu,Juan Jiang,X. H. Niu,C. H. P. Wen,L. Y. Xing,X. C. Wang,Changqing Jin,Binping Xie,Donglai Feng +11 more
TL;DR: In this paper, the effects of chemical substitution on the electronic structure of various series of iron-based superconductors were systematically studied with angle-resolved photoemission spectroscopy.
Journal ArticleDOI
Lifshitz transitions and zero point lattice fluctuations in sulfur hydride showing near room temperature superconductivity
TL;DR: In this paper, the Bianconi-Perali-Valletta (BPV) superconductivity theory is used to understand superconducting properties of H3S metal.
References
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Journal ArticleDOI
Linear methods in band theory
TL;DR: In this article, the authors proposed a method to improve our understanding of the behavior of real solids by using calculations of the electronic structure of real molecules and solids in order to improve the search for new and better materials.
Journal ArticleDOI
Angle-resolved photoemission studies of the cuprate superconductors
TL;DR: A review of the most recent ARPES results on the cuprate superconductors and their insulating parent and sister compounds is presented in this article, with the purpose of providing an updated summary of the extensive literature.
Journal ArticleDOI
Observation of Fermi-surface–dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
Hong Ding,Pierre Richard,Kosuke Nakayama,Katsuaki Sugawara,Toshiyuki Arakane,Y. Sekiba,Akari Takayama,Seigo Souma,Takafumi Sato,Takashi Takahashi,Ziqiang Wang,Xi Dai,Zhilai Fang,Genfu Chen,Janlin Luo,Nanlin Wang +15 more
TL;DR: In this paper, a high-resolution angle-resolved photoelectron spectroscopy study on the Ba0.6K0.4Fe2As2 (Tc=37 K) superconductor was performed, and the isotropic pairing interactions are strongly orbital dependent, as the ratio 2Δ/kBTc switches from weak to strong coupling on different bands.
Journal ArticleDOI
Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
Hong Ding,Pierre Richard,Kosuke Nakayama,T. Sugawara,Toshiyuki Arakane,Y. Sekiba,Akari Takayama,Seigo Souma,Takafumi Sato,Takashi Takahashi,Zhiwei Wang,Xi Dai,Zhong Fang,G. F. Chen,J. L. Luo,Nanlin Wang +15 more
TL;DR: In this paper, the authors reported a direct observation of the superconducting gap, including its momentum, temperature, and Fermi surface (FS) dependence in Ba0.6K0.4Fe2As2 (Tc = 37 K) using angle-resolved photoelectron spectroscopy.
Journal ArticleDOI
Near-degeneracy of several pairing channels in multiorbital models for the Fe pnictides
TL;DR: Weak coupling approaches to the pairing problem in the iron pnictide superconductors have predicted a wide variety of superconducting ground states as discussed by the authors, due both to the inadequacy of certain approximations to the effective low-energy band structure, and to the natural near degeneracy of different pairing channels with many distinct Fermi surface sheets.