H. Yamaoka

activity

20162023

most citedUnusual coexistence of negative/positive charge-transfer in mixed-valence Na

_{x}

_{1 - x}

_{2}

_{4}

6 citations · 12 across the 3 of their papers we have counts for

collaborators

4 papers

cond-mat.str-el2023★ 6 cited

Variation of Pressure-Induced Valence Transition with Approximation Degree in Yb-Based Quasicrystalline Approximants

Keiichiro Imura, Yuki Yoneyama, Hideyuki Ando +6

We have synthesized new Tsai-type Yb-based intermediate-valence approximant crystals (ACs) with different degree of approximation to quasicrystal, Zn--Au--Yb 1/1 and 2/1 AC, and st…

cond-mat.supr-con2021

Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5

Md. Riad Kasem, Yuki Nakahira, Hitoshi Yamaoka +7

High-entropy-alloy (HEA) superconductors are a new class of disordered superconductors. In this study, we investigate the robustness of superconducting states in HEA-type metal tel…

cond-mat.str-el2017★ 6 cited

Unusual coexistence of negative/positive charge-transfer in mixed-valence Na $_{x}$ Ca $_{1 - x}$ Cr $_{2}$ O $_{4}$

M. Taguchi, H. Yamaoka, Y. Yamamoto +6

We have investigated the electronic structure of Na $_{x}$ Ca $_{1 - x}$ Cr $_{2}$ O $_{4}$ using x-ray absorption spectroscopy together with Anderson impurity model calculations with full multip…

cond-mat.supr-con2016

Origin of Pressure-induced Superconducting Phase in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ studied by Synchrotron X-ray Diffraction and Spectroscopy

Yoshiya Yamamoto, Hitoshi Yamaoka, Masashi Tanaka +12

Pressure dependence of the electronic and crystal structures of K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ , which has pressure-induced two superconducting domes of SC I and SC II, was investigated…

Variation of Pressure-Induced Valence Transition with Approximation Degree in Yb-Based Quasicrystalline Approximants

Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5

Unusual coexistence of negative/positive charge-transfer in mixed-valence Nax​Ca1−x​Cr2​O4​

Origin of Pressure-induced Superconducting Phase in Kx​Fe2−y​Se2​ studied by Synchrotron X-ray Diffraction and Spectroscopy

Unusual coexistence of negative/positive charge-transfer in mixed-valence Na $_{x}$ Ca $_{1 - x}$ Cr $_{2}$ O $_{4}$

Origin of Pressure-induced Superconducting Phase in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$ studied by Synchrotron X-ray Diffraction and Spectroscopy