Zobrazeno 1 - 10
of 620
pro vyhledávání: '"Zhang, Ya‐hui"'
We revisit the challenging problem of identifying the quantum spin liquid candidate in the spin-1/2 $J_1$-$J_2$ Heisenberg antiferromagnet on the square lattice. By integrating the Gutzwiller-guided density matrix renormalization group method with an
Externí odkaz:
http://arxiv.org/abs/2411.14114
In this work, we demonstrate a kinetic superconductor in a simple lattice model with only one term: the nearest neighbor hopping $t$. The hopping is projected into a constrained Hilbert space, in the same spirit as the usual t-J model with $J=0$, whe
Externí odkaz:
http://arxiv.org/abs/2411.07292
Autor:
Zhou, Boran, Zhang, Ya-Hui
The recent experimental observation of quantum anomalous Hall (QAH) effects in the rhombohedrally stacked pentalayer graphene has motivated theoretical discussions on the possibility of quantum anomalous Hall crystal (QAHC), a topological version of
Externí odkaz:
http://arxiv.org/abs/2411.04174
Autor:
Yang, Hui, Zhang, Ya-Hui
We performed a random phase approximation (RPA) calculation for a spin-valley polarized model of the rhombohedral tetra-layer graphene to study the possibility of chiral superconductor from the Kohn-Luttinger mechanism. We included the realistic band
Externí odkaz:
http://arxiv.org/abs/2411.02503
The Mott regime with finite $U$ offers a promising platform for exploring novel phases of matter, such as quantum spin liquids (QSL) that exhibit fractionalization and emergent gauge field. Here, we provide a new class wavefunction, dubbed ancilla wa
Externí odkaz:
http://arxiv.org/abs/2409.07512
Autor:
Waters, Dacen, Okounkova, Anna, Su, Ruiheng, Zhou, Boran, Yao, Jiang, Watanabe, Kenji, Taniguchi, Takashi, Xu, Xiaodong, Zhang, Ya-Hui, Folk, Joshua, Yankowitz, Matthew
The rapid development of moir\'e quantum matter has recently led to the remarkable discovery of the fractional quantum anomalous Hall effect, and sparked predictions of other novel correlation-driven topological states. Here, we investigate the inter
Externí odkaz:
http://arxiv.org/abs/2408.10133
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 coupling $J_K$ within each layer, while the localized spin moments are cou
Externí odkaz:
http://arxiv.org/abs/2408.01493
Autor:
Su, Ruiheng, Waters, Dacen, Zhou, Boran, Watanabe, Kenji, Taniguchi, Takashi, Zhang, Ya-Hui, Yankowitz, Matthew, Folk, Joshua
In a dilute two-dimensional electron gas, Coulomb interactions can stabilize the formation of a Wigner crystal. Although Wigner crystals are topologically trivial, it has been predicted that electrons in a partially-filled band can break continuous t
Externí odkaz:
http://arxiv.org/abs/2406.17766
Autor:
Waters, Dacen, Su, Ruiheng, Thompson, Ellis, Okounkova, Anna, Arreguin-Martinez, Esmeralda, He, Minhao, Hinds, Katherine, Watanabe, Kenji, Taniguchi, Takashi, Xu, Xiaodong, Zhang, Ya-Hui, Folk, Joshua, Yankowitz, Matthew
Moir\'e materials host a wealth of intertwined correlated and topological states of matter, all arising from flat electronic bands with nontrivial quantum geometry. A prominent example is the family of alternating-twist magic-angle graphene stacks, w
Externí odkaz:
http://arxiv.org/abs/2405.05913
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 be in the charge transfer regime, challenging the previous models base
Externí odkaz:
http://arxiv.org/abs/2405.00092