Zobrazeno 1 - 10
of 700
pro vyhledávání: '"Sun Qing-Feng"'
Autor:
Zhuang, Yu-Chen, Sun, Qing-Feng
The superconducting diode effect (SDE) refers to the nonreciprocity of superconducting critical currents for the metal-superconductor transition. Generally, the SDE has a positive and a negative critical current $j_{c\pm}$ corresponding to two opposi
Externí odkaz:
http://arxiv.org/abs/2501.00835
Publikováno v:
Sci. Adv.10,eado4756 (2024)
Topological systems hosting gapless boundary states have attracted huge attention as promising components for next-generation information processing, attributed to their capacity for dissipationless electronics. Nevertheless, recent theoretical and e
Externí odkaz:
http://arxiv.org/abs/2412.09076
Publikováno v:
Sci. China- Phys. Mech. Astron. 68,227401 (2025)
The interplay between novel topological states and superconductivity has garnered substantial interest due to its potential for topological quantum computing. The Josephson effect serves as a useful probe for edge superconductivity in these hybrid to
Externí odkaz:
http://arxiv.org/abs/2411.06758
Publikováno v:
Phys. Rev. B 108, 214519 (2023)
We theoretically propose a mechanism to realize the superconducting diode effect (SDE): The current can generate a magnetic field, affecting the magnetic moment of magnetic impurity. When the connection region of the Josephson junction is coupled wit
Externí odkaz:
http://arxiv.org/abs/2410.22769
Publikováno v:
J. Phys.: Condens. Matter 35 505303 (2023)
Quantum spin Hall effect is characterized by topologically protected helical edge states. Here we study the thermal dissipation of helical edge states by considering two types of dissipation sources. The results show that the helical edge states are
Externí odkaz:
http://arxiv.org/abs/2410.22739
Publikováno v:
Phys. Rev. B 109, 045430 (2024)
Nonuniform strain in graphene can induce a pseudo-magnetic field (PMF) preserving time-reversal symmetry, generating pseudo-Landau levels under zero real magnetic field (MF). The different natures between PMF and real MF lead to the counterpropagatin
Externí odkaz:
http://arxiv.org/abs/2410.22738
Autor:
Zhuang, Yu-Chen, Sun, Qing-Feng
Publikováno v:
Phys. Rev. B 107, 235423 (2023)
The wavefront dislocation is an important and ubiquitous phenomenon in wave fields. It is closely related to the phase singularity in a wave function. Some recent studies have verified that the wavefront dislocations in the local density of states (L
Externí odkaz:
http://arxiv.org/abs/2410.21783
Autor:
Zhuang, Yuchen, Sun, Qing-Feng
Publikováno v:
Phys. Rev. B 105, 165148 (2022)
The photon-assisted tunneling of Majorana bound states in a Majorana nanowire driven by the periodic field is studied both theoretically and numerically. We find that Majorana bound states exhibit an anomalous photon-assisted tunneling signal which i
Externí odkaz:
http://arxiv.org/abs/2410.21773
Autor:
Liu, Peng-Yi, Sun, Qing-Feng
Publikováno v:
Phys. Rev. B 110, 085411 (2024)
In recent years, counter-intuitive results have shown that the quantum Hall edge states with topological protection can be dissipative. In this paper, we point out that the non-equilibrium nature of edge states in quantum Hall interferometers leads t
Externí odkaz:
http://arxiv.org/abs/2410.21756
Publikováno v:
Phys. Rev. Applied 21, 024001 (2024)
We propose a superconducting phase-controlled thermal switch based on a four-terminal graphene-superconductor system. By the coupling of two superconducting leads on a zigzag graphene nanoribbon, both the normal-transmission coefficient and the cross
Externí odkaz:
http://arxiv.org/abs/2410.21754