Coexistence of near- Flat Band and Van Hove Singularity in a Two-Phase Superconductor

X Chen, L Wang, J Ishizuka, R Zhang, K Nogaki… - Physical Review X, 2024 - APS
Quantum many-body systems, particularly, the ones with large near-EF density states, are
well known for exhibiting rich phase diagrams as a result of enhanced electron correlations …

Field-induced superconductivity mediated by odd-parity multipole fluctuation

K Nogaki, Y Yanase - Physical Review B, 2024 - APS
Field-induced superconductivity has long presented a counterintuitive phenomenon and a
pivotal challenge in condensed matter physics. In this paper, we introduce a mechanism for …

Appearance of -axis magnetic moment in odd-parity antiferromagnetic state in revealed by -NMR

S Ogata, S Kitagawa, K Kinjo, K Ishida, M Brando… - Physical Review B, 2024 - APS
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. We …

Origin of the non-Fermi-liquid behavior in CeRh2As2

P Khanenko, D Hafner, K Semeniuk, J Banda… - arxiv preprint arxiv …, 2024 - arxiv.org
Unconventional superconductivity in heavy-fermion systems appears often near magnetic
quantum critical points (QCPs). This seems to be the case also for CeRh2As2 (Tc $\approx …

[PDF][PDF] Topology and Strong correlation effect of Hidden symmetry breaking superconductor

K Nogaki - 2024 - repository.kulib.kyoto-u.ac.jp
Odd-parity superconductivity serves as a foundational platform for realizing topological
superconductivity, wherein Majorana fermions emerge at the edges or defects of systems. In …