activity
20072026
most citedThe influence of out-of-plane disorder on the formation of pseudogap and Fermi arc in Bi2Sr2-xRxCuOy (R=La and Eu)

10 citations · 16 across the 7 of their papers we have counts for

collaborators

8 papers

cond-mat.str-el2026

Chiral Antiferromagnetism from Momentum-Space Resonance in a 2D Semiconductor

R. Okuma, T. Ikenobe, Y. Fujisawa +28

Understanding the principles governing the emergence of chiral quantum phases is a fundamental challenge, not only for uncovering new mechanisms of quantum-state formation but also…

cond-mat.str-el2026

Highly fluctuating double- magnetic order in the van der Waals metal CeTe

Ryutaro Okuma, Yuita Fujisawa, Natsumi Maekawa +5

CeTe is a van der Waals antiferromagnet composed of magnetic [CeTe] layers coupled to highly conducting Te square nets. Its simple quasi-two-dimensional electronic…

cond-mat.str-el2026

Robust topological surface states in skyrmion-host magnets Eu(Ga,Al)4: evidence for dual topology

Yuki Arai, Kosuke Nakayama, Takemi Kato +10

The interplay between real-space topology such as magnetic skyrmions and momentum-space topology characterized by topological surface states (TSSs) is predicted to realize novel ph…

cond-mat.str-el2025★ 1 cited

Versatile multi-q antiferromagnetic charge order in correlated vdW metals

Y. Fujisawa, P. Wu, R. Okuma +13

Following the discovery of graphene, interest in van der Waals (vdW) materials has surged; however, advancing physics beyond graphene requires quantum vdW materials platforms that…

cond-mat.str-el2024★ 5 cited

Revealing Pronounced Electron-Hole Fermi Pockets in the Charge Density Wave Semimetal LaTe3

T. Nakamura, Y. Fujisawa, B. R. M. Smith +3

Rare earth tri-tellurides (RTe3) are van der Waals (vdW) coupled semimetals ideal for exploring exotic electronic phases. LaTe3 is especially important for understanding the fundam…

cond-mat.str-el2024

Emergent topological magnetism in Hund's excitonic insulator

R. Okuma, K. Yamagami, Y. Fujisawa +14

Analogous to the charged electron-electron pair condensation in superconductors, an excitonic insulator (EI) represents Fermi surface instability due to spontaneous formation and c…