然而,化学压力对插入带电分子的FeSe的影响仍不清楚。 为了探索这一点,本研究通过化学气相传输(CVT)合成了FeSe₁₋ₓSₓ(x=0–0.52;1)晶体,随后通过电化学方式与TMA⁺插入。 β-FeSe1-xSx前驱体采用CVT法合成,FeS前驱体采用水热法合成,随后将FeSe1-xSx基质晶体(x=0–0.52;1)与TMA+电化学插层,形成(...
然而,这种超导状态需要时间反转对称性(TRS)断裂,而这现象尚未在实验中观察到。在这里,哥伦比亚大学Yasutomo J. Uemura、东京大学Takasada Shibauchi报道了在覆盖正交(向列)相和四方相的FeSe1−xSx(0≤x≤0.22)超导体中的μ介子自旋弛豫(μSR)测量。本文要点:1) 作者发现,对于所有成分,零场μ子弛豫率在超导转变...
We report the evolution of nematic fluctuations in FeSe1−xSx single crystals as a function of Sulfur content x across the nematic quantum critical point (QCP) xc ~ 0.17 via Raman scattering. The Raman spectra in the B1g nematic channel consist of two components, but only the low ener...
Here, from a distinguishing perspective, FeSe1-xSx is reported as 2D van der Waals materials with extraordinary high-T-c at ambient pressure, where the superconductivity is boosted by extreme "chemical pressure" inside the materials. Superior to external high pressure, isovalent S substitution in ...
NMR study under pressure on the iron-based superconductor FeSe1-xSx (x=0.12 and 0.23): Relationship between nematicity and AF fluctuations We performed Se-77-nuclear magnetic resonance measurements on FeSe1-xSx ( x= 0.12 and 0.23). We found from the relaxation time T-1 that nematicity and ...
NMR study under pressure on the iron-based superconductor FeSe1-xSx (x=0.12 and 0.23): Relationship between nematicity and AF fluctuations We performed Se-77-nuclear magnetic resonance measurements on FeSe1-xSx ( x= 0.12 and 0.23). We found from the relaxation time T-1 that nematicity and ...
We report the evolution of nematic fluctuations in FeSe1xSx single crystals as a function of Sulfur content x across the nematic quantum critical point (QCP) xc ~ 0.17 via Raman scattering. The Raman spectra in the B1g nematic channel consist of two components, but only the low energy one ...
The observed features are interpreted as a manifestation of the Villari effect. A phenomenological description of the experimental results is presented. The observed effect shows that the symmetry of the low-temperature FeSe1鈥搙Sx phase belongs to the triclinic syngony.Low temperature physics: ...
Nanoscale inhomogeneity and the evolution of correlation strength in FeSe1-xSxdoi:10.1186/s40580-023-00405-2SCANNING transmission electron microscopyTHERMOELECTRIC materialsSINGLE crystalsWe report a comprehensive study of the nanoscale inhomogeneity and disorder on the thermoelectric prop...
FeSe1-xSexthin filmT-cstrainDue to its unique properties, FeSe1-xSx superconductors have been prime candidates to investigate the unconventional superconducting mechanism in iron chalcogenides. In this study, we report the successful preparation of high-quality epitaxial FeSe1-xSx films with x <= ...