Zobrazeno 1 - 10
of 3 002
pro vyhledávání: '"Qin, Fang"'
In contrast with extended Bloch waves, a single particle can become spatially localized due to the so-called skin effect originating from non-Hermitian pumping. Here we show that in a wide class of kinetically constrained many-body systems, the skin
Externí odkaz:
http://arxiv.org/abs/2403.02395
It is well known that a nontrivial Chern number results in quantized Hall conductance. What is less known is that, generically, the Hall response can be dramatically different from its quantized value in materials with broken inversion symmetry. This
Externí odkaz:
http://arxiv.org/abs/2401.18038
Publikováno v:
Phys. Rev. A 109, 053311 (2024)
It is well known that non-Hermitian, non-reciprocal systems may harbor exponentially localized skin modes. However, in this work, we find that, generically, non-Hermiticity gives rise to abrupt and prominent kinks in the semi-classical wave packet tr
Externí odkaz:
http://arxiv.org/abs/2306.13139
Publikováno v:
Phys. Rev. B 108, 075435 (2023)
Motivated by the recent experimental realization of the half-quantized Hall effect phase in a three-dimensional (3D) semi-magnetic topological insulator [M. Mogi et al., Nature Physics 18, 390 (2022)], we propose a scheme for realizing the half-quant
Externí odkaz:
http://arxiv.org/abs/2306.03187
Autor:
Shen, Ruizhe, Chen, Tianqi, Aliyu, Mohammad Mujahid, Qin, Fang, Zhong, Yin, Loh, Huanqian, Lee, Ching Hua
Publikováno v:
Phys. Rev. Lett. 131, 080403 (2023)
Yang-Lee edge singularities (YLES) are the edges of the partition function zeros of an interacting spin model in the space of complex control parameters. They play an important role in understanding non-Hermitian phase transitions in many-body physic
Externí odkaz:
http://arxiv.org/abs/2302.06662
Publikováno v:
Phys. Rev. B 107, 155430 (2023)
Recently, it was discovered that certain non-Hermitian systems can exhibit qualitative different properties at different system sizes, such as being gapless at small sizes and having topological edge modes at large sizes $L$. This dramatic system siz
Externí odkaz:
http://arxiv.org/abs/2212.13536
Publikováno v:
Phys. Rev. B 106, 235405 (2022)
In this work, we theoretically investigate the light-induced topological phases and finite-size crossovers in a paradigmatic quantum spin Hall (QSH) system with high-frequency pumping optics. Taking the HgTe quantum well for an example, our numerical
Externí odkaz:
http://arxiv.org/abs/2211.09114
Publikováno v:
Phys. Rev. A 107, L010202 (2023)
Recent experimental breakthroughs in non-Hermitian ultracold atomic lattices have dangled tantalizing prospects in realizing exotic, hitherto unreported, many-body non-Hermitian quantum phenomena. In this work, we discover and propose an experimental
Externí odkaz:
http://arxiv.org/abs/2202.10481
Autor:
Wu, Wenbin, Shi, Zeping, Du, Yuhan, Wang, Yuxiang, Qin, Fang, Meng, Xianghao, Liu, Binglin, Ma, Yuanji, Yan, Zhongbo, Ozerov, Mykhaylo, Zhang, Cheng, Lu, Hai-Zhou, Chu, Junhao, Yuan, Xiang
Publikováno v:
Nature Materials 22,84-91 (2023)
Landau band crossings typically stem from the intra-band evolution of electronic states in magnetic fields and enhance the interaction effect in their vicinity. Here in the extreme quantum limit of topological insulator HfTe5, we report the observati
Externí odkaz:
http://arxiv.org/abs/2201.06022
Autor:
Zu-Man, Dou, Yu-Long, Zhang, Chun-Yang, Tang, Chuang, Liu, Jia-Qin, Fang, Qiang, Huang, Chun, Chen, Li-Jun, You, Chin-Ping, Tan, Hui, Niu, Xiong, Fu
Publikováno v:
In Food Research International July 2024 187