Hanbit Oh

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20242026

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cond-mat.str-el2026

Incommensurate pair-density-wave correlations in two-leg ladder $t$ -- $J$ -- $J_{⊥}$ model

Hanbit Oh, Julian May-Mann, Ya-Hui Zhang

We report the discovery of a generalized Luther-Emery liquid phase characterized by incommensurate pair-density-wave (iC-PDW) correlations in the two-leg $t$ - $J$ - $J_{⊥}$ ladder m…

cond-mat.str-el2025

Pair-density-wave superconductivity and Anderson's theorem in bilayer nickelates

Hanbit Oh, Ya-Hui Zhang

The recent experimental observations of high temperature superconductivity in bilayer nickelate have attracted lots of attentions. Previous studies have assumed a mirror symmetry $…

cond-mat.str-el2025

Doping a spin-one Mott insulator: possible application to bilayer nickelate

Hanbit Oh, Hui Yang, Ya-Hui Zhang

In this article, we review some recent theoretical developments on potential high-temperature superconductors and unconventional metallic states that can arise from doping a spin-o…

cond-mat.str-el2025

High spin, low spin or gapped spins: magnetism in the bilayer nickelates

Hanbit Oh, Yi-Ming Wu, Julian May-Mann +4

Inspired by the recent discovery of high-temperature superconductivity in bilayer nickelates, we investigate the role of magnetism emerging from a hypothetical insulating $d^{8}$ par…

cond-mat.str-el2024

High-temperature superconductivity from kinetic energy

Hanbit Oh, Hui Yang, Ya-Hui Zhang

Superconductivity is usually assumed to arise from attractive interaction. In this work we show that strong pairing is possible soley from kinetic energy even without a net attract…

cond-mat.str-el2024

Strong pairing and symmetric pseudogap metal in double Kondo lattice model: from nickelate superconductor to tetralayer optical lattice

Hui Yang, Hanbit Oh, Ya-Hui Zhang

In this work, we propose and study a double Kondo lattice model which hosts robust superconductivity. The system consists of two identical Kondo lattice model, each with Kondo coup…

cond-mat.str-el2024

Type II t-J model in charge transfer regime in bilayer La $_{3}$ Ni $_{2}$ O $_{7}$ and trilayer La $_{4}$ Ni $_{3}$ O $_{10}$

Hanbit Oh, Boran Zhou, Ya-Hui Zhang

Recent observations of an 80 K superconductor in La $_{3}$ Ni $_{2}$ O $_{7}$ under high pressure have attracted significant attention. Recent experiments indicate that La $_{3}$ Ni $_{2}$ O $_{7}$ may…

Incommensurate pair-density-wave correlations in two-leg ladder t--J--J⊥​ model

Pair-density-wave superconductivity and Anderson's theorem in bilayer nickelates

Doping a spin-one Mott insulator: possible application to bilayer nickelate

High spin, low spin or gapped spins: magnetism in the bilayer nickelates

High-temperature superconductivity from kinetic energy

Strong pairing and symmetric pseudogap metal in double Kondo lattice model: from nickelate superconductor to tetralayer optical lattice

Type II t-J model in charge transfer regime in bilayer La3​Ni2​O7​ and trilayer La4​Ni3​O10​

Incommensurate pair-density-wave correlations in two-leg ladder $t$ -- $J$ -- $J_{⊥}$ model

Type II t-J model in charge transfer regime in bilayer La $_{3}$ Ni $_{2}$ O $_{7}$ and trilayer La $_{4}$ Ni $_{3}$ O $_{10}$