S. Kitagawa

activity

20242026

collaborators

17 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.str-el2026

Intrinsic Magnetic Excitations and Heavy-Fermion Formation in the Frustrated Mn Pyrochlore System YMn $_{2 + I^´}$ Zn $_{20 - x} X_{x}$ ( $X$ = In and Al) Revealed by Nuclear Magnetic Resonance and Nuclear Quadrupole Resonance Measurements

Shunsaku Kitagawa, Kenji Ishida, Yoshihiko Okamoto +1

We performed nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements to investigate the microscopic electronic states of the $d$ -electron heavy-fermion…

cond-mat.supr-con2026

Intimate relationship between spin configuration in the triplet pair and superconductivity in UTe $_{2}$

Hiroki Matsumura, Yuki Takahashi, Riku Matsubayashi +16

Spin-triplet superconductivity is an intriguing quantum coherent state with both spin and orbital degrees of freedom, which holds significant potential for future applications in q…

cond-mat.str-el2026

Microscopic Determination of the c-axis-Oriented Antiferromagnetic Structure in LaMnSi by $^{55}$ Mn and $^{139}$ La NMR

Yusuke Sakai, Fumiya Hori, Hiroki Matsumura +4

We report a microscopic investigation of the magnetic structure and electronic properties of LaMnSi in its antiferromagnetic (AFM) state using nuclear magnetic resonance (NMR). Fie…

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

Electronic state of superconductivity in line nodal material CaSb2 under pressure up to 4.2 GPa

Shumpei Oguchi, Kenji Ishida, Atsutoshi Ikeda +2

We report the results of resistance measurements under pressure up to $4.2 GPa$ on single-crystalline $CaSb_{2}$ , which shows the maximum of superconducting trans…

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

Intrinsic Magnetic Excitations and Heavy-Fermion Formation in the Frustrated Mn Pyrochlore System YMn2+I^´​Zn20−x​Xx​ (X = In and Al) Revealed by Nuclear Magnetic Resonance and Nuclear Quadrupole Resonance Measurements

Intimate relationship between spin configuration in the triplet pair and superconductivity in UTe2​

Microscopic Determination of the c-axis-Oriented Antiferromagnetic Structure in LaMnSi by 55Mn and 139La NMR