A Note on the Maximum Critical Field of High-Field Superconductors

Chandrasekhar, B. S.

doi:10.1063/1.1777362

Cited by 1,138 publications

(797 citation statements)

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“…The investigated single crystals of κ-(BEDT-TTF) 2 Cu(NCS) 2 and β″-(BEDT-TTF) 2 SF 5 CH 2 CF 2 SO 3 were prepared by standard electrochemical processes described elsewhere [26,27]. The specific heat was measured by use of a continuous relaxation technique as described in more detail in the Appendix of Ref.…”

Section: Methodsmentioning

confidence: 99%

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Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Beyer

Wosnitza

2013

Low Temperature Physics

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In this short review, we report on the recently found growing experimental evidence for the existence of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states in quasi-two-dimensional organic superconductors. At high magnetic fields aligned parallel to the conducting organic layers, we observe an upturn of the upper critical field beyond the Pauli limit, as evidenced by specific-heat and torque-magnetization measurements. Inside the superconducting state a second thermodynamic transition emerges. These features appear only in a very narrow angular region close to parallel-field orientation.

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Section: Methodsmentioning

confidence: 99%

“…with B μ the Bohr magneton and 0 Δ the superconducting energy gap at = 0 T [1,2]. This limit occurs in spin-singlet superconductors when the Zeeman energy becomes larger than the superconducting condensation energy.…”

Section: Introductionmentioning

confidence: 99%

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Beyer

Wosnitza

2013

Low Temperature Physics

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“…Turning to momentum space, the quark part of the thermodynamic potential is then given by Eq. (47), while the meson part becomes…”

Section: Mean-field Thermodynamic Potentialmentioning

confidence: 99%

Inhomogeneous chiral condensates

Buballa

Carignano

2015

Progress in Particle and Nuclear Physics

247

258

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The chiral condensate, which is constant in vacuum, may become spatially modulated at moderately high densities where in the traditional picture of the QCD phase diagram a first-order chiral phase transition occurs. We review the current status of this idea, which originally dates back to Migdal's pion condensation, but recently received new momentum through studies on the nature of the chiral critical point and by the conjecture of a quarkyonic-matter phase. We discuss how these nonuniform phases emerge in generalized Ginzburg-Landau analyses as well as in specific calculations, both within effective models and in Dyson-Schwinger or large-N c approaches to QCD. Questions about the most favored shape of the modulations and its dimension, and about the effects of nonzero isospin chemical potential, strange quarks, color superconductivity, and external magnetic fields on these inhomogeneous phases will be addressed as well.

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“…5,6 Here, χ N = The actual H c2 of real materials is generally influenced by the both orbital and spin-paramagnetic effects. The relative importance of the orbital and spin-paramagnetic effects can be described by the …”

Section: Introduction a Upper Critical Fields And Pair-breaking Mmentioning

confidence: 99%

Pauli-limiting effects in the upper critical fields of a clean LiFeAs single crystal

et al. 2011

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We have investigated the temperature-dependence of the upper critical field H c2 (T) in a LiFeAs single crystal by direct measurements of resistivity under static magnetic fields up to 36 T. We find in the case of a magnetic field H along the ab-plane that H c2 with a finite Maki parameter. We also discuss the implications of multi-band effects and spin-orbit 2 scattering based on the finding that the estimated Pauli-limiting field is generally much larger than the BCS prediction in the Fe-based superconductors.

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A Note on the Maximum Critical Field of High-Field Superconductors

Cited by 1,138 publications

References 5 publications

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Emerging evidence for FFLO states in layered organic superconductors (Review Article)

Inhomogeneous chiral condensates

Pauli-limiting effects in the upper critical fields of a clean LiFeAs single crystal

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