282 citations · 1.4k across the 30 of their papers we have counts for
31 papers
Monoaxial Dzyaloshinskii-Moriya interaction-induced topological Hall effect in a new chiral-lattice magnet GdPtB
Yoshiki J. Sato, Hikari Manako, Ryuji Okazaki +3
We investigate the topological Hall effect (THE) in the monoaxial chiral crystal GdPtB, a recently discovered compound that exhibits putative helimagnetism below 87 K. The dist…
Pressure-induced structural phase transition and new superconducting phase in UTe2
Fuminori Honda, Shintaro Kobayashi, Naomi Kawamura +10
We report on the crystal structure and electronic properties of the heavy fermion superconductor UTe2 at high pressure up to 11 GPa, as investigated by X-ray diffraction and electr…
New Gd-based magnetic compound GdPtB with a chiral crystal structure
Yoshiki J. Sato, Hikari Manako, Yoshiya Homma +3
Herein, we report the discovery of a novel Gd-based magnetic compound GdPtB with a chiral crystal structure. X-ray diffraction and chemical composition analyses reveal a CePt$_…
Monopole-fermion scattering and varying Fock space
Yuta Hamada, Teppei Kitahara, Yoshiki Sato
We propose a four-dimensional interpretation of the outgoing state of the scattering of a massless fermion off a Dirac monopole. It has been known that such a state has fractional…
Magnetovolume Effect on the First-Order Metamagnetic Transition in UTe
Atsushi Miyake, Masaki Gen, Akihiko Ikeda +10
The link between the metamagnetic transition and novel spin-triplet superconductivity of UTe was discussed thermodynamically through magnetostriction measurements in a pulsed-m…
Enhancement and Discontinuity of Effective Mass through the First-Order Metamagnetic Transition in UTe
Atsushi Miyake, Yusei Shimizu, Yoshiki J. Sato +7
Metamagnetic transitions in the novel spin-triplet superconductor UTe were investigated through the newly developed simultaneous measurements of magnetization and sample temper…
Complexity in a moving mirror model
Yoshiki Sato
In a two-dimensional conformal field theory with a moving mirror, known as a moving mirror model, the time evolution of the entanglement entropy shows a Page like curve. This impli…
Magnetic Properties under Pressure in Novel Spin-Triplet Superconductor UTe2
Dexin Li, Ai Nakamura, Fuminori Honda +8
We report the magnetic susceptibility and the magnetization under pressures up to 1.7GPa above the critical pressure, Pc ~ 1.5GPa, for H // a, b, c-axes in the novel spin triplet s…
Field-Induced Superconductivity near the Superconducting Critical Pressure in UTe2
Dai Aoki, Motoi Kimata, Yoshiki J. Sato +12
We report the magnetoresistance in the novel spin-triplet superconductor UTe2 under pressure close to the critical pressure Pc, where the superconducting phase terminates, for fiel…
Pressure induced multicriticality and electronic instability in quasi-kagome ferromagnet URhSn
Arvind Maurya, Dilip Bhoi, Fuminori Honda +9
We report an unconventional class of pressure induced quantum phase transition, possessing two bicritical points at 6.25 GPa in URhSn. This unique transformation accompanies a Ferm…
Free energy and defect -theorem in free fermion
Yoshiki Sato
We describe a -dimensional conformal defect of a free Dirac fermion on a -dimensional flat space as boundary conditions on a conformally equivalent space $\mathbb{H}^{p+1} \t…
Free energy and defect -theorem in free scalar theory
Tatsuma Nishioka, Yoshiki Sato
We describe conformal defects of dimensions in a free scalar theory on a -dimensional flat space as boundary conditions on the conformally flat space $\mathbb{H}^{p+1}\times…
Multiple Superconducting Phases and Unusual Enhancement of the Upper Critical Field in UTe2
Dai Aoki, Fuminori Honda, Georg Knebel +8
We performed AC calorimetry and magnetoresistance measurements under pressure for H || a-axis (easy-magnetization axis) in the novel heavy-fermion superconductor UTe2. Thanks to th…
Boundary entropy under ambient RG flow in the AdS/BCFT model
Yoshiki Sato
We discuss the change of the boundary entropy under an ambient renormalization group flow. We use conformal perturbation theory to calculate the change of the boundary entropy for…
Anisotropy of the Upper Critical Field in the Heavy-Fermion Superconductor UTe2 under Pressure
Georg Knebel, Motoi Kimata, Michal Vališka +12
We studied the anisotropy of the superconducting upper critical field in the heavy-fermion superconductor UTe under hydrostatic pressure by magnetoresistivity meas…
Spin-Triplet Superconductivity in UTe2 and Ferromagnetic Superconductors
Dai Aoki, Ai Nakamura, Fuminori Honda +13
The spin-triplet state is most likely realized in uranium ferromagnetic superconductors, UGe2, URhGe, UCoGe. The microscopic coexistence of ferromagnetism and superconductivity mea…
Does Boundary Distinguish Complexities?
Yoshiki Sato, Kento Watanabe
Recently, Chapman et al. argued that holographic complexities for defects distinguish action from volume. Motivated by their work, we study complexity of quantum states in conforma…
Metamagnetic Transition in Heavy Fermion Superconductor UTe2
Atsushi Miyake, Yusei Shimizu, Yoshiki J. Sato +7
We have studied the magnetization of the recently discovered heavy fermion superconductor UTe up to 56 T in pulsed-magnetic fields. A first-order metamagnetic transition has be…
Unconventional Superconductivity in Heavy Fermion UTe2
Dai Aoki, Ai Nakamura, Fuminori Honda +13
We grew single crystals of the recently discovered heavy fermion superconductor UTe2, and measured the resistivity, specific heat and magnetoresistance. Superconductivity (SC) was…
Towards a -theorem in defect CFT
Nozomu Kobayashi, Tatsuma Nishioka, Yoshiki Sato +1
We explore a -theorem in defect conformal field theories (DCFTs) that unify all the known conjectures and theorems until now. We examine as a candidate -function the addition…
Conformal Manifolds with Boundaries or Defects
Andreas Karch, Yoshiki Sato
We discuss conformal manifolds for conformal field theories with boundaries or defects. Using conformal perturbation theory we derive constraints on coefficients appearing in the b…
Splitting Fermi Surfaces and Heavy Electronic States in Non-Centrosymmetric U3Ni3Sn4
Arvind Maurya, Hisatomo Harima, Ai Nakamura +6
We report the single-crystal growth of the non-centrosymmetric paramagnet U3Ni3Sn4 by the Bridgman method and the Fermi surface properties detected by de Haas-van Alphen (dHvA) exp…
More on Boundary Holographic Witten Diagrams
Yoshiki Sato
In this paper we discuss geodesic Witten diagrams in general holographic conformal field theories with boundary or defect. In boundary or defect conformal field theory, two-point f…
Boundary Holographic Witten Diagrams
Andreas Karch, Yoshiki Sato
In this paper we discuss geodesic Witten diagrams in generic holographic conformal field theories with boundary or defect. Boundary CFTs allow two different decompositions of two-p…