Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Qiu, Wen Xuan"'
Motivated by the recent discovery of superconductivity in twisted bilayer WSe$_2$, we theoretically investigate the pairing instability induced by Coulomb interaction via the Kohn-Luttinger mechanism. Within random phase approximation, we show that t
Externí odkaz:
http://arxiv.org/abs/2409.16114
Autor:
An, Liheng, Pan, Haiyang, Qiu, Wen-Xuan, Wang, Naizhou, Ru, Shihao, Tan, Qinghai, Dai, Xuran, Cai, Xiangbin, Shang, Qiuyu, Lu, Xiufang, Jiang, Hao, Lyu, Xiaodan, Watanabe, Kenji, Taniguchi, Takashi, Wu, Fengcheng, Gao, Wei-bo
Flat bands and electron correlation in moir\'e lattices give rise to many exotic phases, including Mott insulators, superconductivity, and topological states. Within the first moir\'e band, integer and fractional quantum anomalous Hall effects have b
Externí odkaz:
http://arxiv.org/abs/2407.13674
Autor:
Qiu, Wen-Xuan, Wu, Fengcheng
We theoretically derive the sum rule for the negative first moment of the absorptive optical conductivity with excitonic effects and establish its connection to the quantum weight $K$ and Chern number $C$ of the ground state. Applying this framework,
Externí odkaz:
http://arxiv.org/abs/2407.03317
Autor:
Wan, Qiang, Wu, Chunlong, Luo, Xun-Jiang, Dai, Shenghao, Peng, Cao, Li, Renzhe, Mo, Shangkun, Zhao, Keming, Qiu, Wen-Xuan, Zhong, Hao, Li, Yiwei, Zhang, Chendong, Wu, Fengcheng, Xu, Nan
Publikováno v:
Phy. Rev. B 109, L161102 (2024)
Moir\'e superlattices have become an emergent solid-state platform for simulating quantum lattice models. However, in single moir\'e device, Hamiltonians parameters like lattice constant, hopping and interaction terms can hardly be manipulated, limit
Externí odkaz:
http://arxiv.org/abs/2404.11934
Publikováno v:
Phys. Rev. B 109, L041106 (2024)
We present a theoretical study of an interaction-driven quantum phase diagram of twisted bilayer MoTe$_2$ at hole filling factor $\nu_h=1$ as a function of twist angle $\theta$ and layer potential difference $V_z$, where $V_z$ is generated by an appl
Externí odkaz:
http://arxiv.org/abs/2310.02217
Publikováno v:
Phys. Rev. B 109, L041103 (2024)
Semiconductor moir\'e superlattices provide a highly tunable platform to study the interplay between electron correlation and band topology. For example, the generalized Kane-Mele-Hubbard model can be simulated by the topological moir\'e flat bands i
Externí odkaz:
http://arxiv.org/abs/2308.09707
Publikováno v:
Phys. Rev. X 13, 041026 (2023)
Twisted bilayer MoTe$_2$ is a promising platform to investigate the interplay between band topology and many-body interaction. We present a theoretical study of its interaction-driven quantum phase diagrams based on a three-orbital model, which can b
Externí odkaz:
http://arxiv.org/abs/2305.01006
Autor:
Qiu, Wen-Xuan, Zou, Jin-Yu, Luo, Ai-Yun, Cui, Zhi-Hai, Song, Zhi-Da, Gao, Jin-Hua, Wang, Yi-Lin, Xu, Gang
Publikováno v:
Phys. Rev. Lett. 127, 147202 (2021)
Exotic high-rank multipolar order parameters have been found to be unexpectedly active in more and more correlated materials in recent years. Such multipoles are usually dubbed as "Hidden Orders" since they are insensitive to common experimental prob
Externí odkaz:
http://arxiv.org/abs/2105.01489
Publikováno v:
Phys. Rev. B 104, 235404 (2021)
We theoretically demonstrate that the desired $p_{x,y}$-orbital honeycomb electron lattice can be readily realized by arranging CO molecules into a hexagonal lattice on Cu(111) surface with scanning tunneling microscopy (STM). The electronic structur
Externí odkaz:
http://arxiv.org/abs/1901.01008
Publikováno v:
Phys. Rev. B 99, 205403 (2019)
Orbital degree of freedom plays a fundamental role in condensed matter physics. Recently, a new kind of artificial electron lattice has been realized in experiments by confining the metal surface electrons with adsorbed molecular lattice. A most rece
Externí odkaz:
http://arxiv.org/abs/1707.04756