Zobrazeno 1 - 10
of 13 028
pro vyhledávání: '"Qing, Feng"'
The Chern number is a crucial topological invariant for distinguishing the phases of Chern insulators. Here we find that for Chern insulators with inversion symmetry, the Chern number alone is insufficient to fully characterize their topology. Specif
Externí odkaz:
http://arxiv.org/abs/2409.19332
We propose a universal theory for tunable second-order topological corner states induced by interlayer coupling in bilayer Chern insulators with opposite Chern numbers. We demonstrate that the existence of the topological corner state is determined b
Externí odkaz:
http://arxiv.org/abs/2409.19328
Publikováno v:
Physical Review B 110, 014518 (2024)
The field-free and highly efficient diodes with the nonreciprocity of supercurrent are believed to be the core block of the superconducting computing devices without dissipation. In this paper, we propose a Josephson diode based upon altermagnets wit
Externí odkaz:
http://arxiv.org/abs/2408.01901
In this paper, we propose a variance-preserving interpolation framework to improve diffusion models for single-channel speech enhancement (SE) and automatic speech recognition (ASR). This new variance-preserving interpolation diffusion model (VPIDM)
Externí odkaz:
http://arxiv.org/abs/2405.16952
Autor:
Yu, Jia-Le, Hou, Zhe, Bhat, Irfan Hussain, Hu, Pei-Jia, Sun, Jia-Wen, Chen, Xiao-Feng, Guo, Ai-Min, Sun, Qing-Feng
Impurities exist inevitably in two-dimensional materials as they spontaneously adsorb onto the surface during fabrication, usually exerting detrimental effects on electronic transport. Here, we focus on a special type of impurities that preferentiall
Externí odkaz:
http://arxiv.org/abs/2404.04607
Autor:
Liu, Yi-Wen, Zhuang, Yu-Chen, Ren, Ya-Ning, Yan, Chao, Zhou, Xiao-Feng, Yang, Qian, Sun, Qing-Feng, He, Lin
Phase singularities are phase-indeterminate points where wave amplitudes are zero, which manifest as phase vertices or wavefront dislocations. In the realm of optical and electron beams, the phase singularity has been extensively explored, demonstrat
Externí odkaz:
http://arxiv.org/abs/2403.19767
We study the energy levels and transport properties of an extended Kitaev chain with a phase gradient. It is demonstrated that the hopping phase difference can effectively induce the generation of Majorana bound states, which are located at the non-e
Externí odkaz:
http://arxiv.org/abs/2403.02023
We propose a general principle for realizing second-order topological corner states in the modified Kane-Mele model with magnetization. It is demonstrated that the sign of the edge Dirac mass depends on the magnetization of the edge sublattice termin
Externí odkaz:
http://arxiv.org/abs/2403.02017
Autor:
Xue, Qing-Feng, Zhuang, Xu-Cai, Duan, De-Yang, Zhang, Ying-Jie, Yan, Wei-Bin, Xia, Yun-Jie, Franco, Rosario Lo, Man, Zhong-Xiao
Entropy production is a fundamental concept that plays a crucial role in the second law of thermodynamics and the measure of irreversibility. It imposes rigorous constraints on the kinds of transformations allowed in thermodynamic processes. Using an
Externí odkaz:
http://arxiv.org/abs/2402.06858
Autor:
Cheng, Qiang, Sun, Qing-Feng
Publikováno v:
Physical Review B 109, 024517 (2024)
We study the Josephson effect in the spin-singlet superconductor/altermagnet/spin-triplet superconductor junctions using the Green's function method. The current-phase difference relationships in the junctions strongly depend on the orientation of al
Externí odkaz:
http://arxiv.org/abs/2402.02810