activity
20002026
most citedEffect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO1-y (Ln=La,Nd)

609 citations · 6.9k across the 163 of their papers we have counts for

collaborators

163 papers

cond-mat.supr-con2026

Room-Temperature Calcium Intercalation into Graphite Catalyzed by Sodium

Akira Iyo, Shigeyuki Ishida, Hiroshi Eisaki +2

Calcium (Ca) insertion into graphite (C) has been considered to require elevated temperatures, and its occurrence at room temperature (RT) has been regarded as highly unlikely. Her…

cond-mat.supr-con2025

Translational symmetry breaking in the electronic nematic phase of BaFe2As2

K. Koshiishi, L. Liu, K. Okazaki +13

The microscopic origin of the nematicity, namely, four-fold rotational symmetry breaking in iron-based superconductors has been controversial since its discovery. In particular, it…

cond-mat.supr-con2025★ 1 cited

Rapid and Scalable Synthesis of Alkali Metal-Intercalated C Superconductors

Akira Iyo, Hiroshi Fujihisa, Yoshito Gotoh +4

Alkali metal-intercalated C, ( = K, Rb, Cs, and their combinations), holds significant potential for practical applications due to its high superconducting…

cond-mat.supr-con2025★ 4 cited

The uncollapsed LaFe2As2 phase: compensated, highly doped, electron-phonon coupled, iron-based superconductor

Ilaria Pallecchi, Akira Iyo, Hiraku Ogino +2

The recently discovered LaFe2As2 superconducting compound, member of the 122 family of iron pnictide superconductors, becomes superconducting below Tc=13K, yet its nominal doping a…

cond-mat.supr-con2024★ 2 cited

Doping Dependence of Upper Critical Field of High-Tc Cuprate Bi2+xSr2-xCaCu2O8+d Estimated from Irreversibility Field at Zero Temperature

Junichiro Kato, Shigeyuki Ishida, Tatsunori Okada +12

We investigated the temperature (T) dependence of the irreversibility field Hirr(T) in high-critical-temperature cuprate Bi2+xSr2-xCa1-yYyCu2O8+d (Bi-2212) single crystals over a w…

cond-mat.mtrl-sci2024★ 3 cited

Accelerated Lanthanide Intercalation into Graphite Catalyzed by Na

Akira Iyo, Hiroshi Fujihisa, Yoshito Gotoh +4

Lanthanides () are notoriously difficult to intercalate into graphite. We investigated the possibility of using Na to catalyze the formation of -intercalated graphite and s…