Zobrazeno 1 - 10
of 259
pro vyhledávání: '"Qiu, Chunyin"'
Autor:
Zhang, Qicheng, Leng, Yufei, Xiong, Liwei, Li, Yuzeng, Zhang, Kun, Qi, Liangjun, Qiu, Chunyin
Publikováno v:
Advanced Materials, 2403108 (2024)
Non-Hermitian skin effect (NHSE) is one of the most fundamental phenomena in non-Hermitian physics. Although it is established that one-dimensional NHSE originates from the nontrivial spectral winding topology, the topological origin behind the highe
Externí odkaz:
http://arxiv.org/abs/2406.02593
Autor:
Xiong, Liwei, Zhang, Qicheng, Feng, Xiling, Leng, Yufei, Pi, Min, Tong, Shuaishuai, Qiu, Chunyin
Non-Hermitian skin effect (NHSE), characterized by a majority of eigenstates localized at open boundaries, is one of the most iconic phenomena in non-Hermitian lattices. Despite notable experimental studies implemented, most of them witness only cert
Externí odkaz:
http://arxiv.org/abs/2312.11490
Thouless charge pumping protocol provides an effective route for realizing topological particle transport. To date, the first-order and higher-order topological pumps, exhibiting transitions of edge-bulk-edge and corner-bulk-corner states, respective
Externí odkaz:
http://arxiv.org/abs/2309.04051
Symmetry plays a key role in classifying topological phases. Recent theory shows that in the presence of gauge fields, the algebraic structure of crystalline symmetries needs to be projectively represented, which enables unprecedented topological ban
Externí odkaz:
http://arxiv.org/abs/2309.01484
Recently, the higher-order topological phases from the chiral AIII symmetry classes are characterized by a Z topological invariant known as the multipole chiral numbers, which indicate the number of degenerate zero-energy corner states at each corner
Externí odkaz:
http://arxiv.org/abs/2305.10948
Autor:
Zhang, Qicheng, Zhao, Luekai, Liu, Xun, Feng, Xiling, Xiong, Liwei, Wu, Wenquan, Qiu, Chunyin
The nature of complex eigenenergy enables unique band topology to the non-Hermitian (NH) lattice systems. Recently, there has been a fast growing interest in the elusive winding and braiding topologies of the NH single and double bands, respectively.
Externí odkaz:
http://arxiv.org/abs/2212.07609
Autor:
Zhang, Qicheng, Li, Yitong, Sun, Huanfa, Liu, Xun, Zhao, Luekai, Feng, Xiling, Fan, Xiying, Qiu, Chunyin
Topological features embedded in ancient braiding and knotting arts endow significant impacts on our daily life and even cutting-edge science. Recently, fast growing efforts are invested to the braiding topology of complex Bloch bands in non-Hermitia
Externí odkaz:
http://arxiv.org/abs/2212.06667
Bound states in the continuum (BICs) are counter-intuitive localized states with eigenvalues embedded in the continuum of extended states. Recently, nontrivial band topology is exploited to enrich the BIC physics, resulted in topological BICs (TBICs)
Externí odkaz:
http://arxiv.org/abs/2212.06562
Inspired by the newly emergent valleytronics, great interest has been attracted to the topological valley transport in classical metacrystals. The presence of nontrivial domain-wall states is interpreted with a concept of valley Chern number, which i
Externí odkaz:
http://arxiv.org/abs/2205.03857
Exploring new topological phases and phenomena has become a vital topic in condensed matter physics and material sciences. It is generally believed that a pair of band nodes with opposite topological charges will annihilate after collision. Recent st
Externí odkaz:
http://arxiv.org/abs/2202.01467