Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Xingchuan Zhu"'
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023037 (2023)
The recent experimental discovery of several families of kagome materials has boosted the interest in electronic correlations on a kagome lattice. As an initial step to understand the observed complex phenomena, it is helpful to know the corresponden
Externí odkaz:
https://doaj.org/article/4c29d1262b9e4039a800789e342bf3cc
Autor:
Xingchuan Zhu, Shiying Dong, Yang Lin, Rubem Mondaini, Huaiming Guo, Shiping Feng, Richard T. Scalettar
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013085 (2020)
Hard-core bosons on honeycomb lattice ribbons with zigzag edges are studied using exact numerical simulations. We map out the phase diagrams of ribbons with different widths, which contain superfluid and insulator phases at various fillings. We show
Externí odkaz:
https://doaj.org/article/d1c39e490f59436f9506d946aed51e9a
Recent experimental discovery of several families of kagome-lattice materials has boosted the interest in electronic correlations on kagome lattice. As an initial step to understand the observed complex phenomena, it is helpful to know the correspond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14b92a391aebee45920177e6ba6dc9c2
http://arxiv.org/abs/2212.07150
http://arxiv.org/abs/2212.07150
Autor:
Chenyue Wen, Wanpeng Han, Xukun Feng, Xingchuan Zhu, Weisheng Zhao, Shengyuan A. Yang, Shiping Feng, Huaiming Guo
Publikováno v:
Physical Review B. 106
Antiferromagnetic (AF) transitions of birefringent Dirac fermions created by a Y-shaped Kekul\'e distortion in graphene are investigated by the mean-field theory and the determinant quantum Monte Carlo simulations. We show that the quantum critical p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3ad7b41c5bd3fb85834ba939a14f9f1
https://doi.org/10.1103/physrevb.106.245116
https://doi.org/10.1103/physrevb.106.245116
Unconventional ferromagnetism and superconductivity in the imbalanced kagome-lattice Hubbard model are investigated by the mean-field theory and determinant quantum Monte Carlo method. Due to the asymmetric band structure of kagome lattice, the spin-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6f6aa9a85c49cf6822c9b6ad2d32dec
http://arxiv.org/abs/2204.02554
http://arxiv.org/abs/2204.02554
Autor:
Chenyue Wen, Xingchuan Zhu, Zhisong Xiao, Ning Hao, Rubem Mondaini, Huaiming Guo, Shiping Feng
Publikováno v:
Physical Review B. 105
The dominating superconducting pairing symmetry of the kagome-lattice Hubbard model is investigated using the determinant quantum Monte Carlo method. The superconducting instability occurs when doping the correlated insulators formed by the Hubbard i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::593aa76366f799b3e4b9fc7d776166c9
https://doi.org/10.1103/physrevb.105.075118
https://doi.org/10.1103/physrevb.105.075118
We study the magnon bands of twisted bilayer honeycomb quantum magnets using linear spin wave theory. Although the interlayer coupling can be ferromagnetic or antiferromagnetic, we keep the intralayer one ferromagnetic to avoid possible frustration.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab018ee7dfe47a612c453f02dde95a7d
http://arxiv.org/abs/2008.11640
http://arxiv.org/abs/2008.11640
Based on the Hubbard models, quantum magnetism of topologically-designed graphene nanoribbons (GNRs) is studied using exact numerical simulations. We first study a two-band Hubbard model describing the low-energy topological bands using density matri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f83d1714f5e7256a6f653672d1eb77ab
http://arxiv.org/abs/2006.01398
http://arxiv.org/abs/2006.01398
Linelike hardcore bosonic domain walls in a staggered potential on honeycomb lattice are studied using quantum Monte Carlo simulations. The phase diagrams of ribbons with zigzag and armchair domain walls are mapped, which contain superfluid and insul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff43337ad2ee2d8fdb60c1b5e51fab54
Publikováno v:
Journal of Physics: Condensed Matter. 34:035603
We study the higher-order topological spin phases based on a spin analogue of Benalcazar-Bernevig-Hughes model in two dimensions using large-scale quantum Monte Carlo simulations. A continuous N\'eel-valence bond solid quantum phase transition is rev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16d4113c9b60698f3aab9bcaf8385f36
https://doi.org/10.1088/1361-648x/ac30b4
https://doi.org/10.1088/1361-648x/ac30b4