Multiband effects on beta-FeSe single crystals

Abstract

We present the upper critical fields Hc2(T) and Hall effect in beta-FeSe single crystals. The Hc2(T) increases as the temperature is lowered for field applied parallel and perpendicular to (101), the natural growth facet of the crystal. The Hc2(T) for both field directions and the anisotropy at low temperature increase under pressure. Hole carriers are dominant at high magnetic fields. However, the contribution of electron-type carriers is significant at low fields and low temperature. Our results show that multiband effects dominate Hc2(T) and electronic transport in the normal state.

References in corpus (30)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure
• Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
• The superconductivity at 18 K in LiFeAs system
• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Extreme Sensitivity of Superconductivity to Stoichiometry in FeSe (Fe1+dSe)
• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• Reply to Comment on "Unconventional s-wave superconductivity in Fe(Se,Te)"
• Heavily electron-doped electronic structure and isotropic superconducting gap in AxFe2Se2 (A=K,Cs)
• Coexistence of the spin-density-wave and superconductivity in the (Ba,K)Fe2As2
• Upper critical fields and thermally-activated transport of Nd(O_0.7F_0.3)FeAs single crystal
• Transition of stoichiometricSr2VO3FeAs to a superconducting state at 37.2 K
• Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation
• Determination of anisotropic Hc2 up to 60 T in (Ba0.55K0.45)Fe2As2 single crystals
• Density Functional Study of Excess Fe in Fe${}_{1+x}$Te: Magnetism and Doping
• Pauli-limited upper critical field in Fe1+yTe1-xSex
• Psuedo-isotropic upper critical field in cobalt-doped SrFe2As2 epitaxial films
• Evolution of two-gap behavior of the superconductor FeSe_1-x
• Anisotropies of the lower and upper critical fields in MgB${}_2$ single crystals
• Critical fields, thermally-activated transport and critical current density of beta-FeSe single crystals
• Upper critical fields of the 11-system iron-chalcogenide superconductor FeSe${}_{0.25}$Te${}_{0.75}$
• Superconducting properties and Fermi-surface topology of the quasi-two-dimensional organic superconductor $\lambda$-(BETS)${}_2$GaCl${}_4$
• Synthesis, crystal structure and magnetism of beta-Fe1.00(2)Se1.00(3) single crystals
• Anisotropic Hc2 of K0.8Fe1.76Se2 determined up to 60 T
• Nonmetallic Gasket and Miniature Plastic Turnbuckle Diamond Anvil Cell for Pulsed Magnetic Field Studies at Cryogenic Temperatures
• Effects of excess Fe on upper critical field and magnetotransport in Fe1+y(Te1-xSx)z

Cited by in corpus (35)

• Evolution of high-temperature superconductivity from low-Tc phase tuned by carrier concentration in FeSe thin flakes
• Electric field-induced superconducting transition of insulating FeSe thin film at 35 K
• Temperature dependence of lower critical field Hc1(T) shows nodeless superconductivity in FeSe
• Tuning phase transitions of FeSe thin flakes by field effect transistor with solid ion conductor as gate dielectric
• Electric Transport of a Single Crystal Iron Chalcogenide FeSe Superconductor: Evidence of Symmetry Breakdown Nematicity and Additional Ultrafast Dirac cone-Like Carriers
• Electron carriers with possible Dirac-cone-like dispersion in FeSe${}_{1-x}$S${}_x$ ($x$ = 0 and 0.14) single crystals triggered by structural transition
• Multiband Effect and Possible Dirac Fermions in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$
• Superconductivity with extremely large upper critical fields in Nb2Pd0.81S5
• Quantum oscillations and upper critical magnetic field of the iron-based superconductor FeSe
• Superconductivity and Charge Density Wave in ZrTe${}_{3-x}$Se${}_x$
• Gate-tuned Superconductor-Insulator transition in (Li,Fe)OHFeSe
• Effect of Selenium doping on the superconductivity of Nb${}_2$Pd(S${}_{1-x}$Se${}_x$)${}_5$
• Superconductivity with High Upper Critical Field in the Cubic Centrosymmetric $\eta$-Carbide Nb${}_4$Rh${}_2$C${}_{1-\delta }$
• Superfluid density and microwave conductivity of FeSe superconductor: ultra-long-lived quasiparticles and extended s-wave energy gap
• Protonation-induced discrete superconducting phases in bulk FeSe single crystals
• Transport and pinning properties of Ag-doped FeSe0.94
• Evolution of transport properties in FeSe thin flakes with thickness approaching the two-dimensional limit
• Multiband character of $\beta$-FeSe: Angular dependence of the magnetoresistance and upper critical field
• Superconductivity at 2.5 K in new transition-metal chalcogenide Ta2PdSe5
• Synthesis, phase stability, structural and physical properties of 11-type iron chalcogenides
• Competing spin density wave, collinear, and helical magnetism in Fe1+xTe
• Evidence for multiband superconductivity and charge density waves in Ni-doped ZrTe${}_2$
• Evolution of vortex pinning in the FeSe${}_{1-x}$S${}_x$ system
• Superconductivity in Te-deficient ZrTe${}_2$
• Intrinsic pinning by naturally occurring correlated defects in FeSe${}_{\text{1-x}}$Te${}_{\text{x}}$ superconductors
• Fluctuations in two-band superconductors in a strong magnetic field
• Microstructural control of the transport properties of $\beta$-FeSe films grown by sputtering
• Experimental and first-principles studies of superconductivity in topological nodal line semimetal SnTaS${}_2$
• Pressure dependence of upper critical fields in FeSe single crystals
• Crystal structures and the sign reversal Hall resistivity in iron-based superconductors Lix(C3H10N2)0.32FeSe (0.15<x<0.4)
• Temperature dependence and limiting mechanisms of the upper critical field of FeSe thin films
• Microwave flux-flow Hall effect in a multi-band superconductor FeSe
• Improvement of the superconducting properties of polycrystalline FeSe by silver addition
• Multiband behavior and non-metallic low-temperature state of K${}_{0.50}$Na${}_{0.24}$Fe${}_{1.52}$Se${}_2$
• Upper Critical Field and Kondo Effects in Fe(Te0.9Se0.1) Thin Films by Pulsed Field Measurements