Shiki Ogata

activity

20242026

collaborators

5 papers

cond-mat.supr-con2026

Incommensurate modulation with $Q = 0$ A-type Antiferromagnetic Order in CeRh $_{2}$ As $_{2}$ revealed by NQR studies

Shiki Ogata, Shunsaku Kitagawa, Kenji Ishida +4

We performed $^{75}$ As nuclear quadrupole resonance (NQR) and nuclear magnetic resonance (NMR) measurements on a higher-quality single-crystalline CeRh $_{2}$ As $_{2}$ , a heavy-fermion s…

cond-mat.supr-con2025

Conventional $s$ -wave Superconductivity in LaRh $_{2}$ As $_{2}$ ; the Analog without the 4 $f$ Electrons of CeRh $_{2}$ As $_{2}$

Shiki Ogata, Shunsaku Kitagawa, Kenji Ishida +4

Superconductor LaRh $_{2}$ As $_{2}$ has the same crystal structures as CeRh $_{2}$ As $_{2}$ , which exhibits superconducting (SC) multiphase in the $c$ -axis magnetic field. Although the SC tran…

cond-mat.supr-con2025

Magnetic Field Dependence of the Spin Susceptibility on Conventional s-wave Superconductor LaRu $_{4}$ P $_{12}$ Revealed by $^{31}$ P-NMR and $^{139}$ La-NMR

Riku Matsubayashi, Shiki Ogata, Taishi Ihara +6

The magnetic field dependence of the spin part of Knight shift, which is proportional to the superconducting-state spin susceptibility, was investigated at two nuclear sites, $^{31…

cond-mat.supr-con2025

Intrinsic low-temperature magnetic properties on the ultra-clean UTe $_{2}$ with $T_{c}$ = 2.1 K revealed by $^{125}$ Te NMR

Hiroki Matsumura, Shunsaku Kitagawa, Shiki Ogata +14

To investigate the intrinsic magnetic properties of UTe $_{2}$ , we performed $^{125}$ Te-NMR measurements on the ultra-clean single-crystalline UTe $_{2}$ with superconducting transition…

cond-mat.supr-con2024

Appearance of $c$ -axis magnetic moment in odd-parity antiferromagnetic state in CeRh $_{2}$ As $_{2}$ revealed by $^{75}$ As-NMR

Shiki Ogata, Shunsaku Kitagawa, Katsuki Kinjo +5

CeRh $_{2}$ As $_{2}$ shows the superconducting (SC) multiphase under the $c$ -axis magnetic field, which is considered to originate from local inversion symmetry breaking at the Ce site.…

Incommensurate modulation with Q=0 A-type Antiferromagnetic Order in CeRh2​As2​ revealed by NQR studies

Conventional s-wave Superconductivity in LaRh2​As2​; the Analog without the 4f Electrons of CeRh2​As2​

Magnetic Field Dependence of the Spin Susceptibility on Conventional s-wave Superconductor LaRu4​P12​ Revealed by 31P-NMR and 139La-NMR

Intrinsic low-temperature magnetic properties on the ultra-clean UTe2​ with Tc​ = 2.1 K revealed by 125Te NMR

Appearance of c-axis magnetic moment in odd-parity antiferromagnetic state in CeRh2​As2​ revealed by 75As-NMR

Incommensurate modulation with $Q = 0$ A-type Antiferromagnetic Order in CeRh $_{2}$ As $_{2}$ revealed by NQR studies

Conventional $s$ -wave Superconductivity in LaRh $_{2}$ As $_{2}$ ; the Analog without the 4 $f$ Electrons of CeRh $_{2}$ As $_{2}$

Magnetic Field Dependence of the Spin Susceptibility on Conventional s-wave Superconductor LaRu $_{4}$ P $_{12}$ Revealed by $^{31}$ P-NMR and $^{139}$ La-NMR

Intrinsic low-temperature magnetic properties on the ultra-clean UTe $_{2}$ with $T_{c}$ = 2.1 K revealed by $^{125}$ Te NMR

Appearance of $c$ -axis magnetic moment in odd-parity antiferromagnetic state in CeRh $_{2}$ As $_{2}$ revealed by $^{75}$ As-NMR