H. Sakakibara

activity

20102026

most citedModel construction and a possibility of cuprate-like pairing in a new d9 nickelate superconductor (Nd,Sr)NiO2

219 citations · 1.3k across the 30 of their papers we have counts for

collaborators

30 papers

cond-mat.supr-con2026

Theoretical study of superconductivity in freestanding infinite-layer nickelate membranes under pressure: mitigation of excess correlation enhances $T_{c}$

Mahiru Seki, Reo Kono, Naotaka Tanaka +5

We theoretically investigate a freestanding membrane of infinite-layer nickelate Nd $_{0.85}$ Sr $_{0.15}$ NiO $_{2}$ under pressure by constructing a seven-orbital effective model based…

cond-mat.supr-con2026

Hierarchical structure of primary and hybridization-induced superconducting correlations in bilayer nickelates

Hiroshi Watanabe, Hirofumi Sakakibara, Kazuhiko Kuroki

High-pressure superconductivity in the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$ , with a transition temperature approaching 80 K, has stimulated intense debate regarding its microscopic…

cond-mat.supr-con2026

Theoretical proposal of superconductivity in hole-doped reduced bilayer nickelate La3Ni2O6: a manifestation of orbital-space bilayer model with incipient bands

Shu Kamiyama, Reo Kohno, Yuto Hoshi +4

A correspondence exists between the multi-orbital Hubbard model and the bilayer Hubbard model, in which superconductivity is optimized in an incipient-band regime in both cases. In…

cond-mat.supr-con2025

Theoretical study on ambient pressure superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ thin films : structural analysis, model construction, and robustness of $s \pm$ -wave pairing

Kensei Ushio, Shu Kamiyama, Yuto Hoshi +4

We theoretically study ambient pressure superconductivity in thin films of La $_{3}$ Ni $_{2}$ O $_{7}$ . We construct model Hamiltonians adopting the crystal structure theoretically determine…

cond-mat.supr-con2024★ 8 cited

Theoretical study of the crystal structure of the bilayer nickel oxychloride Sr $_{3}$ Ni $_{2}$ O $_{5}$ Cl $_{2}$ and analysis of possible unconventional superconductivity

Masayuki Ochi, Hirofumi Sakakibara, Hidetomo Usui +1

The discovery of superconductivity under high pressure with $T_{c}$ exceeding 80 K in a bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$ has led to a strong desire to realize similar high $T_{c}$ p…

cond-mat.supr-con2024★ 2 cited

Theoretical study on the possibility of high $T_{c}$ s $\pm$ -wave superconductivity in the heavily hole-doped infinite layer nickelates

Hirofumi Sakakibara, Ryota Mizuno, Masayuki Ochi +2

We theoretically propose a possibility of realizing high $T_{c}$ superconductivity having $s \pm$ -wave symmetry in the heavily hole-doped infinite layer nickelates La $_{1 - x}$ Sr $_{x}$ NiO…

cond-mat.supr-con2023★ 35 cited

Pair correlations of the hybridized orbitals in a ladder model for the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$

Masataka Kakoi, Tatsuya Kaneko, Hirofumi Sakakibara +2

To clarify the nature of high-temperature superconductivity in the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$ under pressure, we investigate, using the density-matrix renormalization grou…

cond-mat.supr-con2023★ 62 cited

Pair correlations in the two-orbital Hubbard ladder: Implications on superconductivity in the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$

Tatsuya Kaneko, Hirofumi Sakakibara, Masayuki Ochi +1

Motivated by high-temperature superconductivity in pressurized La $_{3}$ Ni $_{2}$ O $_{7}$ , we investigate the pair correlations in the two-orbital Hubbard ladder, which consists of the near…

cond-mat.supr-con2023★ 135 cited

Theoretical analysis on the possibility of superconductivity in a trilayer Ruddlesden-Popper nickelate La $_{4}$ Ni $_{3}$ O $_{10}$ under pressure and its experimental examination: comparison with La $_{3}$ Ni $_{2}$ O $_{7}$

Hirofumi Sakakibara, Masayuki Ochi, Hibiki Nagata +9

We study the possibility of superconductivity in a trilayer Ruddlesden-Popper nickelate La $_{4}$ Ni $_{3}$ O $_{10}$ under pressure both theoretically and experimentally, making comparison…

cond-mat.supr-con2023★ 203 cited

Possible high $T_{c}$ Superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ under High Pressure through Manifestation of a Nearly-Half-Filled Bilayer Hubbard Model

Hirofumi Sakakibara, Naoya Kitamine, Masayuki Ochi +1

Inspired by a recent experiment showing that La $_{3}$ Ni $_{2}$ O $_{7}$ exhibits high $T_{c}$ superconductivity under high pressure, we theoretically revisit the possibility of superconductiv…

cond-mat.supr-con2022★ 5 cited

Monte Carlo study of cuprate superconductors in a four-band $d$ - $p$ model: Role of orbital degrees of freedom

Hiroshi Watanabe, Tomonori Shirakawa, Kazuhiro Seki +4

Understanding the complex phase diagram of cuprate superconductors is a long-standing challenging problem. Recent studies have shown that orbital degrees of freedom, both Cu $e_{g}$ …

cond-mat.supr-con2021★ 13 cited

Unified description of cuprate superconductors using four-band $d$ - $p$ model

Hiroshi Watanabe, Tomonori Shirakawa, Kazuhiro Seki +4

In the 35 years since the discovery of cuprate superconductors, we have not yet reached a unified understanding of their properties, including their material dependence of the supe…

cond-mat.mtrl-sci2021

Bond-length distributions classified by coordination environments

Motonari Sawada, Ryoga Iwamoto, Takao Kotani +1

We have analyzed bond-length distributions between cations and anions for crystal structures in the crystallographic open database (www.crystallography.net/cod/). The distributions…

cond-mat.supr-con2019★ 219 cited

Model construction and a possibility of cuprate-like pairing in a new d9 nickelate superconductor (Nd,Sr)NiO2

Hirofumi Sakakibara, Hidetomo Usui, Katsuhiro Suzuki +3

Effective models are constructed for a newly discovered superconductor (Nd,Sr)NiO2, which has been considered as a possible nickelate analogue of the cuprates owing to the d9 elect…

cond-mat.str-el2019★ 7 cited

A finite electric-field approach to evaluate the vertex correction for the screened Coulomb interaction in the quasiparticle self-consistent GW method

Hirofumi Sakakibara, Takao Kotani, Masao Obata +1

We apply the quasiparticle self-consistent GW method (QSGW) to slab models of ionic materials, LiF, KF, NaCl, MgO, and CaO, under electric field. Then we obtain the optical dielect…

cond-mat.str-el2018★ 11 cited

Model-mapped random phase approximation to evaluate superconductivity in the fluctuation exchange approximation from first principles

Hirofumi Sakakibara, Takao Kotani

We have applied the model-mapped RPA [H. Sakakibara et al., J. Phys. Soc. Jpn. 86, 044714 (2017)] to the cuprate superconductors La2CuO4 and HgBa2CuO4, resulting two-orbital Hubbar…

cond-mat.mtrl-sci2016★ 13 cited

Model-mapped RPA for determining the effective Coulomb interaction

Hirofumi Sakakibara, Seung Woo Jang, Hiori Kino +3

We present a new method to obtain interaction part of a model Hamiltonian from the result of the first-principles calculation. The effective interaction contained in the model is d…

cond-mat.supr-con2015★ 72 cited

Direct theoretical evidence for weaker correlations in electron-doped and Hg-based hole-doped cuprates

Seung Woo Jang, Hirofumi Sakakibara, Hiori Kino +3

Many important questions for high- $T_{c}$ cuprates are closely related to the insulating nature of parent compounds. While there has been intensive discussion on this issue, all argu…

cond-mat.str-el2015★ 45 cited

Coexistence of light and heavy surface states in a topological multi-band Kondo insulator

Robert Peters, Tsuneya Yoshida, Hirofumi Sakakibara +1

We analyze the impact of strong correlations on the surface states of a three-dimensional topological Kondo insulator. An important observation is that correlations are strongly in…

cond-mat.supr-con2014★ 47 cited

Orbital mixture effect on the Fermi surface- $T_{c}$ correlation in the cuprate superconductors --- bilayer vs single layer

Hirofumi Sakakibara, Katsuhiro Suzuki, Hidetomo Usui +6

By constructing $d_{x^{2} - y^{2}} - d_{z^{2}}$ two-orbital models from first principles, we have obtained a systematic correlation between the Fermi surface warping and the evaluated $T_{c}$ …

cond-mat.mtrl-sci2013★ 13 cited

Theoretical expectation of large Seebeck effect in PtAs $_{2}$ and PtP $_{2}$

Kouta Mori, Hidetomo Usui, Hirofumi Sakakibara +1

Motivated by a recent observation of good thermoelectric properties in %a %pyrite material PtSb $_{2}$ , we theoretically study related pyrites %materials in an attempt to %find a %bet…

cond-mat.supr-con2013★ 1 cited

Two-orbital view on the origin of the material dependence of Tc in the single-layer cuprates

Hirofumi Sakakibara, Hidetomo Usui, Kazuhiko Kuroki +2

Using the dx2-y2+dz2 two orbital model of the high Tc cuprates obtained from the first-principle calculation, we show that the material dependence of the Fermi surface shape can be…

cond-mat.supr-con2013

Material Optimization for Fermi Surface Shape Control of Tl-based Cuprate Superconductors

Satoaki Miyao, Hirofumi Sakakibara, Isao Maruyama +2

To show an optimization method of element substitution for cuprate superconductors, we investigate Fermi surface shape of TlR2A2Cu3O9 with R=La, Y, and A=Li, Na, K, Rb, Cs. We adop…

cond-mat.mtrl-sci2013★ 28 cited

Pudding-mold type band in a potential thermoelectric material CuAlO $_{2}$ : comparison with Na $_{x}$ CoO $_{2}$

Kouta Mori, Hirofumi Sakakibara, Hidetomo Usui +1

A potential thermoelectric material CuAlO $_{2}$ is theoretically studied. We first construct a model Hamiltonian of CuAlO $_{2}$ based on the first principles band calculation, and calc…

Theoretical study of superconductivity in freestanding infinite-layer nickelate membranes under pressure: mitigation of excess correlation enhances Tc​

Hierarchical structure of primary and hybridization-induced superconducting correlations in bilayer nickelates

Theoretical proposal of superconductivity in hole-doped reduced bilayer nickelate La3Ni2O6: a manifestation of orbital-space bilayer model with incipient bands

Theoretical study on ambient pressure superconductivity in La3​Ni2​O7​ thin films : structural analysis, model construction, and robustness of s±-wave pairing

Theoretical study of the crystal structure of the bilayer nickel oxychloride Sr3​Ni2​O5​Cl2​ and analysis of possible unconventional superconductivity

Theoretical study on the possibility of high Tc​ s±-wave superconductivity in the heavily hole-doped infinite layer nickelates

Pair correlations of the hybridized orbitals in a ladder model for the bilayer nickelate La3​Ni2​O7​

Pair correlations in the two-orbital Hubbard ladder: Implications on superconductivity in the bilayer nickelate La3​Ni2​O7​

Theoretical analysis on the possibility of superconductivity in a trilayer Ruddlesden-Popper nickelate La4​Ni3​O10​ under pressure and its experimental examination: comparison with La3​Ni2​O7​

Possible high Tc​ Superconductivity in La3​Ni2​O7​ under High Pressure through Manifestation of a Nearly-Half-Filled Bilayer Hubbard Model

Monte Carlo study of cuprate superconductors in a four-band d-p model: Role of orbital degrees of freedom

Unified description of cuprate superconductors using four-band d-p model

Bond-length distributions classified by coordination environments

Model construction and a possibility of cuprate-like pairing in a new d9 nickelate superconductor (Nd,Sr)NiO2

A finite electric-field approach to evaluate the vertex correction for the screened Coulomb interaction in the quasiparticle self-consistent GW method

Model-mapped random phase approximation to evaluate superconductivity in the fluctuation exchange approximation from first principles

Model-mapped RPA for determining the effective Coulomb interaction

Direct theoretical evidence for weaker correlations in electron-doped and Hg-based hole-doped cuprates

Coexistence of light and heavy surface states in a topological multi-band Kondo insulator

Orbital mixture effect on the Fermi surface-Tc​ correlation in the cuprate superconductors --- bilayer vs single layer

Theoretical expectation of large Seebeck effect in PtAs2​ and PtP2​

Two-orbital view on the origin of the material dependence of Tc in the single-layer cuprates

Material Optimization for Fermi Surface Shape Control of Tl-based Cuprate Superconductors

Pudding-mold type band in a potential thermoelectric material CuAlO2​ : comparison with Nax​CoO2​

Theoretical study of superconductivity in freestanding infinite-layer nickelate membranes under pressure: mitigation of excess correlation enhances $T_{c}$

Theoretical study on ambient pressure superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ thin films : structural analysis, model construction, and robustness of $s \pm$ -wave pairing

Theoretical study of the crystal structure of the bilayer nickel oxychloride Sr $_{3}$ Ni $_{2}$ O $_{5}$ Cl $_{2}$ and analysis of possible unconventional superconductivity

Theoretical study on the possibility of high $T_{c}$ s $\pm$ -wave superconductivity in the heavily hole-doped infinite layer nickelates

Pair correlations of the hybridized orbitals in a ladder model for the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$

Pair correlations in the two-orbital Hubbard ladder: Implications on superconductivity in the bilayer nickelate La $_{3}$ Ni $_{2}$ O $_{7}$

Theoretical analysis on the possibility of superconductivity in a trilayer Ruddlesden-Popper nickelate La $_{4}$ Ni $_{3}$ O $_{10}$ under pressure and its experimental examination: comparison with La $_{3}$ Ni $_{2}$ O $_{7}$

Possible high $T_{c}$ Superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ under High Pressure through Manifestation of a Nearly-Half-Filled Bilayer Hubbard Model

Monte Carlo study of cuprate superconductors in a four-band $d$ - $p$ model: Role of orbital degrees of freedom

Unified description of cuprate superconductors using four-band $d$ - $p$ model

Orbital mixture effect on the Fermi surface- $T_{c}$ correlation in the cuprate superconductors --- bilayer vs single layer

Theoretical expectation of large Seebeck effect in PtAs $_{2}$ and PtP $_{2}$

Pudding-mold type band in a potential thermoelectric material CuAlO $_{2}$ : comparison with Na $_{x}$ CoO $_{2}$