Electronic band structure of ferro-pnictide superconductors from ARPES experiment
A. A. Kordyuk,V. B. Zabolotnyy,Daniil Evtushinsky,Alexander Yaresko,Bernd Buechner,Sergey Borisenko +5 more
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In this paper, 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, focusing on those differences for 111 and 122 compounds.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.
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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.
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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.
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Ironing out the details of unconventional superconductivity
Rafael M. Fernandes,Amalia I. Coldea,Hong Ding,Ian R. Fisher,Peter Hirschfeld,Gabriel Kotliar +5 more
TL;DR: In the case of the iron-based superconductors, a new appreciation of the ways in which the presence of multiple atomic orbitals can manifest in unconventional superconductivity, giving rise to a rich landscape of gap structures that share the same dominant pairing mechanism as discussed by the authors .
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Spectral properties of transition metal pnictides and chalcogenides: Angle-resolved photoemission spectroscopy and dynamical mean-field theory
Ambroise van Roekeghem,Ambroise van Roekeghem,Pierre Richard,Hong Ding,Silke Biermann,Silke Biermann +5 more
TL;DR: In this paper, the results of angle-resolved photoemission spectroscopy experiments (ARPES) and of combined density functional/dynamical mean field theory (DFT+DMFT) calculations are compared.
References
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Iron based superconductors: Pnictides versus chalcogenides
TL;DR: In this paper, a review of the present day situation with studies of high-temperature superconductivity in iron pnictides and chalcogenides is presented.
Posted Content
Fusion of bogoliubons in Ba$_{1-x}$K$_{x}$Fe$_2$As$_2$ and similarity of energy scales in high temperature superconductors
Daniil Evtushinsky,Timur K. Kim,A. A. Kordyuk,V. B. Zabolotnyy,Bernd Büchner,Alexander Boris,D. L. Sun,Chengtian Lin,Huiqian Luo,Zhaosheng Wang,Hai-Hu Wen,Rolf Follath,Sergey Borisenko +12 more
TL;DR: In this paper, the authors present a direct experimental observation of fusion of Bogoliubov dispersion branches originating from the antipodal Fermi crossings by means of angle-resolved photoemission spectroscopy (ARPES).