Sulfur-induced magnetism in FeSe${}_{1-x}$S${}_x$ thin films on LaAlO${}_3$ revealed by muon spin rotation/relaxation

Abstract

Muon spin rotation/relaxation measurements were performed to investigate magnetic properties of FeSe${}_{1-x}$S${}_x$ thin films on LaAlO${}_3$. A drastic decrease of the initial asymmetry was observed together with the peak structure in the temperature dependence of the relaxation rate of muon spins almost at the same temperature where kink anomalies were observed in the temperature dependent resistivity. With increasing S content, the anomaly temperature increased and the magnetic fluctuations at the lowest temperature were suppressed. These results show that the S substitution induces magnetism at low temperatures in FeSe${}_{1-x}$S${}_x$ thin films. Although the behaviors of the magnetic and nematic phases in FeSe films towards chemical pressure by S substitution are similar to those for bulk FeSe towards hydrostatic pressure, the behavior of $T_{\mathrm{c}}$ is significantly different between these systems. Our results demonstrate that the detailed comparative investigation among physical and chemical pressure effects is essentially important to understand the interplay of the magnetism, the nematicity and the superconductivity in iron chalcogenides.

arXiv comment19 pages, 5 figures

References in corpus (37)

• Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3
• Superconductivity in single-layer films of FeSe with a transition temperature above 100 K
• Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Pressure evolution of low-temperature crystal structure and bonding of 37 K $T_c$ FeSe superconductor
• musrfit: A free platform-independent framework for muSR data analysis
• The Structural Phase Transition in FeSe (Fe1+dSe)
• Orbital-driven nematicity in FeSe
• Observation of superconductivity at 30 K~46 K in AxFe2Se2 (A = Li, Na, Ba, Sr, Ca, Yb, and Eu)
• Effect of magnetic frustration on nematicity and superconductivity in Fe chalcogenides
• Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe
• Evolution of high-temperature superconductivity from low-Tc phase tuned by carrier concentration in FeSe thin flakes
• Reconstruction of Band Structure Induced by Electronic Nematicity in an FeSe Superconductor
• Lifting of xz/yz orbital degeneracy at the structural transition in detwinned FeSe
• Nematic quantum critical point without magnetism in FeSe1-xSx superconductors
• Pressure-induced high-Tc superconducting phase in FeSe: correlation between anion height and Tc
• Coexistence of Superconductivity and Magnetism in FeSe_1-x under Pressure
• Strong cooperative coupling of pressure-induced magnetic order and nematicity in FeSe
• Maximizing Tc by tuning nematicity and magnetism in FeSe1-xSx superconductors
• Systematic Comparison of Eight Substrates in the Growth of FeSe${}_{0.5}$Te${}_{0.5}$ Superconducting Thin Films
• Pressure-induced antiferromagnetic transition and phase diagram in FeSe
• Suppression of phase separation and giant enhancement of superconducting transition temperature in FeSe${}_{1-x}$Te${}_x$ thin films
• Pressure-Induced Effects on the Structure of the FeSe Superconductor
• New Li-Ethylenediamine-Intercalated Superconductor Li${}_x$(C${}_2$H${}_8$N${}_2$)${}_y$Fe${}_{2-z}$Se${}_2$ with $T_c$ = 45 K
• Suppression of electronic correlations by chemical pressure from FeSe to FeS
• Enhancement of the Superconducting Transition Temperature in FeSe Epitaxial Thin Films by Anisotropic Compression
• Superconductivity of FeSe0.5Te0.5 Thin Films Grown by Pulsed Laser Deposition
• Correlation between Superconductivity and Magnetic Fluctuations in Fe(Se1-xSx) Revealed by 77Se NMR
• Dome of magnetic order inside the nematic phase of sulfur-substituted FeSe under pressure
• Systematic study on transport properties of FeSe thin films with various degrees of strain
• Hydrothermal synthesis and complete phase diagram of FeSe${}_{1-x}$S${}_x$ $(0\le x\le 1)$ single crystals
• Growth of superconducting epitaxial films of sulfur substituted FeSe via pulsed laser deposition
• Close proximity of FeSe to a magnetic quantum critical point as revealed by high-resolution $\mu$SR measurements
• Pressure induced magnetic order in FeSe
• Robustness of superconductivity to competing magnetic phases in tetragonal FeS
• Enhancement of superconducting transition temperature in electrochemically etched FeSe/LaAlO${}_3$ films
• Extended Magnetic Dome Induced by Low Pressures in Superconducting FeSe${}_{1\text{-}\mathrm{x}}$S${}_{\mathrm{x}}$

Cited by in corpus (5)

• Positive and negative chemical pressure effects investigated in electron-doped FeSe films with an electric-double-layer structure
• Relationships between Superconductivity and Nematicity in FeSe${}_{1-x}$Te${}_x$ ($x=0-0.5$) Films Studied by Complex Conductivity Measurements
• Evolution of lattice, spin, and charge properties across the phase diagram of FeSe${}_{1-x}$S${}_x$
• Studies of superconductivity of Fe chalcogenides in films grown by PLD technique
• Evolution of charge dynamics in FeSe${}_{1-x}$Te${}_x$: Effects of electronic correlations and nematicity