A. Park

activity

20162024

most citedEnhancement of critical current densities in (Ba,K)Fe2As2 wires and tapes using HIP technique

53 citations · 128 across the 6 of their papers we have counts for

collaborators

6 papers

cond-mat.supr-con2024

Normal-state resistivity and the depairing current density of BaFe $_{2}$ (As,P) $_{2}$ nanobridges along the $c$ axis

Yuki Mizukoshi, Kotaro Jimbo, Akiyoshi Park +3

We report precise measurements to obtain the normal-state resistivity and the depairing current density of BaFe $_{2}$ (As $_{1 - x}$ P $_{x}$ ) $_{2}$ ( $x \sim 0.29 - 0.32$ ) nanobridges along the $c$ …

cond-mat.supr-con2020★ 8 cited

Effects of 6 MeV proton irradiation on the vortex ensemble in BaFe $_{2}$ (As $_{0.67}$ P $_{0.33}$ ) $_{2}$ revealed through magnetization measurements and real-space vortex imaging

Akiyoshi Park, Ivan Veshchunov, Akinori Mine +3

The change in vortex ensemble in BaFe $_{2}$ (As $_{0.67}$ P $_{0.33}$ ) $_{2}$ , an isovalently doped iron-based superconductor (IBS), is studied through global magnetization measurements a…

cond-mat.supr-con2018★ 18 cited

Field-driven transition in the Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ superconductor with splayed columnar defects

Akiyoshi Park, Sunseng Pyon, Kengo Ohara +5

Through 2.6 GeV U irradiations, we have induced bimodal splayed columnar defects in Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ single crystals with splay angles, $\pm 5^{\circ}$ , $\pm 1 0^{\circ}$ ,…

cond-mat.supr-con2017★ 23 cited

Symmetry-unprotected nodes or gap minima in $s_{++}$ state of FeSe single crystal

Yue Sun, Akiyoshi Park, Sunseng Pyon +2

We report the study on superconducting pairing mechanism of FeSe via the pair-breaking effects induced by H $^{+}$ -irradiation combined with low-temperature specific heat measurements…

cond-mat.supr-con2017★ 26 cited

Effects of heavy-ion irradiation on FeSe

Yue Sun, Akiyoshi Park, Sunseng Pyon +3

We report the effects of heavy-ion irradiation on FeSe single crystals by irradiating Uranium up to a dose equivalent matching field of $B_{ϕ}$ = 16 T. Almost continuous columnar def…

cond-mat.supr-con2016★ 53 cited

Enhancement of critical current densities in (Ba,K)Fe2As2 wires and tapes using HIP technique

Sunseng Pyon, Takahiro Suwa, Akiyoshi Park +6

(Ba,K)Fe2As2 superconducting wires and tapes are fabricated by using hot isostatic pressing (HIP) technique, and their superconducting properties are studied. In the HIP round wire…

Normal-state resistivity and the depairing current density of BaFe2​(As,P)2​ nanobridges along the c axis

Effects of 6 MeV proton irradiation on the vortex ensemble in BaFe2​(As0.67​P0.33​)2​ revealed through magnetization measurements and real-space vortex imaging

Field-driven transition in the Ba1−x​Kx​Fe2​As2​ superconductor with splayed columnar defects