2 papers
cond-mat.str-el2026
Interaction-enhanced antiferromagnetic correlations in a Kondo ladder with a gapped band structure
Tatsuya Kaneko, Ritsuki Hirabayashi, Yutaka Akagi
We investigate magnetic correlations in the two-leg Kondo-Hubbard ladder using the density-matrix renormalization group method. We focus on a parameter regime in which the noninter…
cond-mat.supr-con2026
Superconductivity in doped spin multimer systems
Ritsuki Hirabayashi, Masataka Kakoi, Ryota Ueda +2
Binding energy, which quantifies pair formation, is a key factor in the emergence of superconductivity. Here, we show that even when multiple spins are complexly coupled, hole-dope…