Quantum oscillations and upper critical magnetic field of the iron-based superconductor FeSe

Abstract

Shubnikov-de Haas (SdH) oscillations and upper critical magnetic field ($H\_c2$) of the iron-based superconductor FeSe ($T\_c$ = 8.6 K) have been studied by tunnel diode oscillator-based measurements in magnetic fields of up to 55 T and temperatures down to 1.6 K. Several Fourier components enter the SdH oscillations spectrum with frequencies definitely smaller than predicted by band structure calculations indicating band renormalization and reconstruction of the Fermi surface at low temperature, in line with previous ARPES data. The Werthamer-Helfand-Hohenberg model accounts for the temperature dependence of $H\_c2$ for magnetic field applied both parallel (\textbf{H} $\Vert$ $ab$) and perpendicular (\textbf{H} $\Vert$ $c$) to the iron conducting plane, suggesting that one band mainly controls the superconducting properties in magnetic fields despite the multiband nature of the Fermi surface. Whereas Pauli pair breaking is negligible for \textbf{H} $\Vert$ $c$, a Pauli paramagnetic contribution is evidenced for \textbf{H} $\Vert$ $ab$ with Maki parameter $\alpha$ = 2.1, corresponding to Pauli field $H\_P$ = 36.5 T

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• Dichotomy between the hole and electrons behavior in the multiband FeSe probed by ultra high magnetic fields
• Orbital-dependent Fermi Surface shrinking as a fingerprint of nematicity in FeSe
• Nematicity and magnetism in FeSe and other families of Fe-based superconductors
• Charge induced nematicity in FeSe
• Strong $(\pi ,0)$ spin fluctuations in $\beta$-FeSe observed by neutron spectroscopy
• Pressure-induced antiferromagnetic transition and phase diagram in FeSe
• Evolution of the Fermi surface of the nematic superconductors FeSe1-xSx
• Model of Electronic Structure and Superconductivity in Orbitally Ordered FeSe
• Electronic nematic states tuned by isoelectronic substitution in bulk FeSe1-xSx
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• Competing collinear magnetic structures in superconducting FeSe by first principles quantum Monte Carlo calculations
• Magnetotransport study of the pressure-induced antiferromagnetic phase in FeSe
• Fermi surface with Dirac fermions in CaFeAsF determined via quantum oscillation measurements
• Itinerant approach to magnetic neutron scattering of FeSe: effect of orbital selectivity
• Observation of the in-plane magnetic field-induced phase transitions in FeSe
• Singular magnetic anisotropy in the nematic phase of FeSe
• Quantum FFLO state in clean layered superconductors
• Magnetic tricritical point and nematicity in FeSe under pressure
• Orbital transmutation and the electronic spectrum of FeSe in the nematic phase
• Superconducting FeSe monolayer with milli-electron volt Fermi energy
• Synthesis, phase stability, structural and physical properties of 11-type iron chalcogenides
• Upper critical field and quantum oscillations in tetragonal superconducting FeS
• Magnetic oscillations measure interlayer coupling in cuprate superconductors
• Band structure reconstruction across nematic order in high quality FeSe single crystal as revealed by optical spectroscopy study
• Importance of non-local electron correlations in BaNiS${}_2$ semimetal from quantum oscillations studies
• Slow quantum oscillations without fine-grained Fermi Surface Reconstruction in Cuprate Superconductors
• Anisotropic effect of a magnetic field on the neutron spin resonance in FeSe
• Do Fourier analysis yield reliable amplitude of quantum oscillations?
• Strong Landau-quantization effects in high-magnetic-field superconductivity of a two-dimensional multiple-band metal near the Lifshitz transition
• Charge carrier dynamics of FeSe thin film investigated by terahertz magneto-optical spectroscopy
• Pressure dependence of upper critical fields in FeSe single crystals
• Unveiling the quasiparticle behaviour in the pressure-induced high-$T_c$ phase of an iron-chalcogenide superconductor
• Theory of spin-excitation anisotropy in the nematic phase of FeSe obtained from RIXS measurements
• Accurate determination of the Fermi surface of tetragonal FeS via quantum oscillation measurements and quasiparticle self-consistent \textit{GW} calculations
• Interplay between orbital-quantization effects and the Fulde-Ferrell-Larkin-Ovchinnikov instability in multiple-band layered superconductors
• Temperature dependence and limiting mechanisms of the upper critical field of FeSe thin films
• Unusual normal and superconducting state properties observed in hydrothermal Fe1-xSe flakes
• A mesoscopic device for a realization of the Topological Kondo effect
• In-plane and interlayer magnetoresistance in FeSe