Gap symmetry and structure of Fe-based superconductors
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TLDR
In this paper, a spin fluctuation theory and the sign-changing s-wave symmetry of superconducting gap structures was proposed to account for the nonuniversality of the gap structures of FeNictide and chalcogenide superconductors.Abstract:
The recently discovered Fe-pnictide and chalcogenide superconductors display low-temperature properties suggesting superconducting gap structures which appear to vary substantially from family to family, and even within families as a function of doping or pressure. We propose that this apparent nonuniversality can actually be understood by considering the predictions of spin fluctuation theory and accounting for the peculiar electronic structure of these systems, coupled with the likely 'sign-changing s-wave' (s?) symmetry. We review theoretical aspects, materials properties and experimental evidence relevant to this suggestion, and discuss which further measurements would be useful to settle these issues.Satisfactoriness has to be measured by a multitude of standards, of which some, for aught we know, may fail in any given case; and what is more satisfactory than any alternative in sight, may to the end be a sum of pluses and minuses, concerning which we can only trust that by ulterior corrections and improvements a maximum of the one and a minimum of the other may some day be approached.??????????????????????William James, Meaning of Truthread more
Citations
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Superconductivity in iron compounds
TL;DR: A detailed review of the superconductivity of FePnictide and chalcogenide (FePn/Ch) superconductors can be found in this paper.
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What drives nematic order in iron-based superconductors?
TL;DR: In this paper, the current theoretical and experimental state of the field of nematic order in superconductors is discussed and a review of the current literature is given. But beyond this, there is little consensus on how nematic ordering arises and whether it has an effect on superconductivity.
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Magnetism and its microscopic origin in iron-based high-temperature superconductors
TL;DR: In this paper, the authors argue that the magnetism arises from both itinerant and localized electrons and that the magnetic states found in iron-based superconductors are more complex than originally thought.
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High-temperature superconductivity in iron pnictides and chalcogenides
TL;DR: In this article, the authors describe the advances in the field that have led to higher superconducting transition temperatures in iron-based superconductors and the wide range of materials that are used to form these superconductions.
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Iron-based superconductors: Current status of materials and pairing mechanism
Hideo Hosono,Kazuhiko Kuroki +1 more
TL;DR: The current status of iron-based superconductors (IBSC) is described in this paper, covering most up-to-date research progress along with some background research, focusing on materials (bulk and thin film) and pairing mechanism.
References
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Iron-Based Layered Superconductor La[O1-xFx]FeAs (x = 0.05−0.12) with Tc = 26 K
TL;DR: It is reported that a layered iron-based compound LaOFeAs undergoes superconducting transition under doping with F- ions at the O2- site and exhibits a trapezoid shape dependence on the F- content.
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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.
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Unconventional Superconductivity with a Sign Reversal in the Order Parameter of LaFeAsO 1-x F x
TL;DR: It is argued that the newly discovered superconductivity in a nearly magnetic, Fe-based layered compound is unconventional and mediated by antiferromagnetic spin fluctuations, though different from the usual superexchange and specific to this compound.
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Phenomenological theory of unconventional superconductivity
Manfred Sigrist,Kazuo Ueda +1 more
TL;DR: In this paper, a review of recent developments in the phenomenological description of unconventional superconductivity is presented, starting with the BCS theory of superconductivities with anisotropic Cooper pairing, and the group-theoretical derivation of the generalized Ginzburg-Landau theory for unconventional supercondivity.
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The superconductivity of Sr 2 RuO 4 and the physics of spin-triplet pairing
TL;DR: In this paper, a summary and evaluation of the experimental properties of spin-triplet superconductivity in a quasi-two-dimensional Fermi liquid is presented. But the authors do not consider the effect of symmetry-breaking magnetic fields on the phase diagram.