Review of annealing effects and superconductivity in Fe1+ yTe1− xSex superconductors

Y Sun, Z Shi, T Tamegai - Superconductor Science and …, 2019 - iopscience.iop.org
Among iron-based superconductors, Fe 1+ y Te 1− x Se x is unique in its structural
simplicity, consisting of only FeTe/Se layers, which is favorable for probing the mechanism of …

Superconductivity and Dirac fermions in 112‐phase pnictides

SJ Ray, L Alff - physica status solidi (b), 2017 - Wiley Online Library
This article reviews the current research on the 112‐phase of pnictides. The 112‐phase has
gained augmented attention due to the recent discovery of high‐temperature …

Critical current density, vortex dynamics, and phase diagram of single-crystal FeSe

Y Sun, S Pyon, T Tamegai, R Kobayashi, T Watashige… - Physical Review B, 2015 - APS
We present a comprehensive study of the vortex pinning and dynamics in a high-quality
FeSe single crystal which is free from doping-introduced inhomogeneities and charged …

Second magnetization peak effect, vortex dynamics and flux pinning in 112-type superconductor Ca0.8La0.2Fe1−xCoxAs2

W Zhou, X Xing, W Wu, H Zhao, Z Shi - Scientific reports, 2016 - nature.com
Investigation of vortex pinning and its relaxation is of great importance for both basic physics
and technological applications in the field of superconductivity. We report a great …

[HTML][HTML] Fe-based superconducting thin films on metallic substrates: Growth, characteristics, and relevant properties

K Iida, J Hänisch, C Tarantini - Applied Physics Reviews, 2018 - pubs.aip.org
The discovery of Fe-based superconductors (FBS) as the second class of high-temperature
superconducting transition (high-T c) materials after the cuprates generated a significant …

Large and significantly anisotropic critical current density induced by planar defects in single crystals

S Pyon, A Takahashi, I Veshchunov, T Tamegai… - Physical Review B, 2019 - APS
Three independent components of critical current density, one for the H//c axis and the other
two for the H//ab plane, have been studied in CaKFe 4 As 4 single crystals. When the …

Multiband effects and possible Dirac fermions in

Y Sun, T Taen, T Yamada, S Pyon, T Nishizaki, Z Shi… - Physical Review B, 2014 - APS
We investigated the transport properties of Fe 1+ y Te 0.6 Se 0.4 single crystals with different
amounts of excess Fe prepared by O 2 annealing. The O 2 annealing remarkably improved …

Critical current density and vortex dynamics in pristine and proton-irradiated Ba0. 6K0. 4Fe2As2

T Taen, F Ohtake, S Pyon, T Tamegai… - Superconductor …, 2015 - iopscience.iop.org
The screening current density (J) and vortex pinning properties for $ H|| c $ are studied in
optimally hole-doped Ba 0.6 K 0.4 Fe 2 As 2 single crystals with a superconducting transition …

Influence of interstitial Fe to the phase diagram of Fe1+yTe1−xSex single crystals

Y Sun, T Yamada, S Pyon, T Tamegai - Scientific reports, 2016 - nature.com
Superconductivity (SC) with the suppression of long-range antiferromagnetic (AFM) order is
observed in the parent compounds of both iron-based and cuprate superconductors. The …

Novel anisotropy of upper critical fields in Fe1+ yTe0. 6Se0. 4

Y Pan, Y Sun, N Zhou, X Yi, Q Hou, J Wang… - Journal of Alloys and …, 2024 - Elsevier
Studying the upper critical field (µ 0 H c2) and its anisotropy of superconductors is of great
importance because it can provide an unusual insight into the pair-breaking mechanism …