Zero-energy vortex bound state in the superconducting topological surface state of Fe (Se, Te)

T Machida, Y Sun, S Pyon, S Takeda, Y Kohsaka… - Nature materials, 2019 - nature.com
Majorana quasiparticles in condensed matter are important for topological quantum
computing,–, but remain elusive. Vortex cores of topological superconductors may …

Multiple topological states in iron-based superconductors

P Zhang, Z Wang, X Wu, K Yaji, Y Ishida, Y Kohama… - Nature Physics, 2019 - nature.com
Topological materials and unconventional iron-based superconductors are both important
areas of study but, to date, relatively little overlap has been identified between these two …

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 …

Dynamics and mechanism of oxygen annealing in Fe1+yTe0.6Se0.4 single crystal

Y Sun, Y Tsuchiya, T Taen, T Yamada, S Pyon… - Scientific Reports, 2014 - nature.com
Abstract Iron chalcogenide Fe (Te, Se) attracted much attention due to its simple structure,
which is favorable for probing the superconducting mechanism. Its less toxic nature …

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 …

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 …

Modulations in Superconductors: Probes of Underlying Physics

Y Guo, D Qiu, M Shao, J Song, Y Wang… - Advanced …, 2023 - Wiley Online Library
The importance of modulations is elevated to an unprecedented level, due to the delicate
conditions required to bring out exotic phenomena in quantum materials, such as …

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 …

Improving superconducting performance of Fe (Se, Te) with in situ formed grain-boundary strengthening and flux pinning centers

J Liu, B Shao, X Liu, M Li, L Sang… - … Applied Materials & …, 2022 - ACS Publications
It is well known that the existence of interstitial Fe is a great obstacle to enhancing the
superconducting properties of the Fe (Se, Te) system. In this work, a silver and oxygen …

The superconductivity and transport properties in FeTe with S addition

Q Ma, Q Gao, W Shan, X Li, H Li, Z Ma - Vacuum, 2022 - Elsevier
In the past few years, iron chalcogenide compounds have attracted considerable attentions
due to its unique superconductivity and simplest structure. Till now, many studies have been …