Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Mai, Peizhi"'
To assess prior mean-field studies that the interacting Kane-Mele model supports a novel antiferromagnetic Chern insulating phase (AFCI) for a wide range of sublattice potentials, we analyze the Kane-Mele-Hubbard model in the presence of a sublattice
Externí odkaz:
http://arxiv.org/abs/2409.07557
Autor:
Mai, Peizhi, Zhao, Jinchao, Tenkila, Gaurav, Hackner, Nico A., Kush, Dhruv, Pan, Derek, Phillips, Philip W.
We present the $n$-orbital extension of the Hatsugai-Kohmoto (HK) model to the orbital HK (OHK) model which obtains by covering the Brillouin zone with $N/n$ Hubbard clusters each containing $n$-sites all connected via twisted boundary conditions. We
Externí odkaz:
http://arxiv.org/abs/2401.08746
We show here that numerous examples abound where changing topology does not necessarily close the bulk insulating charge gap as demanded in the standard non-interacting picture. From extensive determinantal and dynamical cluster quantum Monte Carlo s
Externí odkaz:
http://arxiv.org/abs/2401.01402
Particle-hole asymmetric ferromagnetism and spin textures in the triangular Hubbard-Hofstadter model
Autor:
Ding, Jixun K., Yang, Luhang, Wang, Wen O., Zhu, Ziyan, Peng, Cheng, Mai, Peizhi, Huang, Edwin W., Moritz, Brian, Phillips, Philip W., Feldman, Benjamin E., Devereaux, Thomas P.
In a lattice model subject to a perpendicular magnetic field, when the lattice constant is comparable to the magnetic length, one enters the "Hofstadter regime," where continuum Landau levels become fractal magnetic Bloch bands. Strong mixing between
Externí odkaz:
http://arxiv.org/abs/2309.07876
Publikováno v:
Phys. Rev. Lett. 131, 106601 (2023)
We show exactly that standard `invariants' advocated to define topology for non-interacting systems deviate strongly from the Hall conductance whenever the excitation spectrum contains zeros of the single-particle Green function, $G$, as in general s
Externí odkaz:
http://arxiv.org/abs/2305.02341
Autor:
Mai, Peizhi, Nichols, Nathan S., Karakuzu, Seher, Bao, Feng, Del Maestro, Adrian, Maier, Thomas A., Johnston, Steven
There is growing evidence that the hole-doped single-band Hubbard and $t$-$J$ models do not have a superconducting ground state reflective of the high-temperature cuprate superconductors but instead have striped spin- and charge-ordered ground states
Externí odkaz:
http://arxiv.org/abs/2210.14930
In non-interacting systems, bands from non-trivial topology emerge strictly at half-filling and exhibit either the quantum anomalous Hall or spin Hall effects. Here we show using determinantal quantum Monte Carlo and an exactly solvable strongly inte
Externí odkaz:
http://arxiv.org/abs/2210.11486
While the recent advances in topology have led to a classification scheme for electronic bands described by the standard theory of metals, a similar scheme has not emerged for strongly correlated systems such as Mott insulators in which a partially f
Externí odkaz:
http://arxiv.org/abs/2207.01638
Autor:
Karakuzu, Seher, Ly, Andy Tanjaroon, Mai, Peizhi, Neuhaus, James, Maier, Thomas A., Johnston, Steven
Publikováno v:
Communications Physics 5, 311 (2022)
Several state-of-the-art numerical methods have observed static or fluctuating spin and charge stripes in doped two-dimensional Hubbard models, suggesting that these orders play a significant role in shaping the cuprate phase diagram. Many experiment
Externí odkaz:
http://arxiv.org/abs/2205.15464
Motivated by recent experimental work on moir\'e systems in a strong magnetic field, we compute the compressibility as well as the spin correlations and Hofstadter spectrum of spinful electrons on a honeycomb lattice with Hubbard interactions using t
Externí odkaz:
http://arxiv.org/abs/2205.08545