Zobrazeno 1 - 10
of 462
pro vyhledávání: '"Flat bands"'
Autor:
Yi-Cai Zhang
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract In our previous work, the concept of critical region in a generalized Aubry–André model (Ganeshan–Pixley–Das Sarma’s model) has been established. In this work, we find that the critical region can be realized in a one-dimensional fl
Externí odkaz:
https://doaj.org/article/65114afca80e4ffe9ffc717c50869935
Autor:
Hanfa Song, Vien Van
Publikováno v:
Advanced Photonics Research, Vol 5, Iss 8, Pp n/a-n/a (2024)
Coupled microring lattices are versatile photonic systems that can be used to realize various topological phases of matter. In two‐dimensional (2D) microring lattices, the periodic and unidirectional circulation of light in each microring gives ris
Externí odkaz:
https://doaj.org/article/685e1b0648e2455e9879fc042cbc9c64
Autor:
Volkov Ilya A., Ustimenko Nikita A., Kornovan Danil F., Sheremet Alexandra S., Savelev Roman S., Petrov Mihail I.
Publikováno v:
Nanophotonics, Vol 13, Iss 3, Pp 289-298 (2024)
The optically trapped ensembles of atoms provide a versatile platform for storing and coherent manipulation of quantum information. However, efficient realization of quantum information processing requires long-lived quantum states protected from the
Externí odkaz:
https://doaj.org/article/ee4409f4f31941a7a61e4d7d6be0ef93
Enhanced Itinerant d0 Ferromagnetism and Tunable Topological Properties of a Ca2C/Ca2N Heterobilayer
Publikováno v:
Advanced Electronic Materials, Vol 10, Iss 4, Pp n/a-n/a (2024)
Abstract Recent studies have shown that a rich variety of exotic physical phenomena can emerge from the presence of electronic flat bands. Using first‐principles calculations, here a monolayered Ca2C possesses a relatively flat band near the Fermi
Externí odkaz:
https://doaj.org/article/aaab1dd0f93941759b1e6e68b46452e8
Publikováno v:
Heliyon, Vol 10, Iss 7, Pp e28275- (2024)
In this study, we address three key challenges in photonic crystals: modeling of isolated flat bands, electric field prediction, and band separation in dispersion relations. Using twisted square Bravais lattices at specific angles, we create Bravais-
Externí odkaz:
https://doaj.org/article/d72d0108cd7048b4ba8a0583efac5433
Publikováno v:
Crystals, Vol 14, Iss 9, p 826 (2024)
In our review, we analyze the scaling of the condensation energy EΔ divided by γ, EΔ/γ≃N(0)Δ12/γ, and quasiparticles of both conventional and unconventional superconductors, where N(0) is the density of states at zero temperature T=0, Δ1 is
Externí odkaz:
https://doaj.org/article/de3491bf1c3c4e1799511625c487abce
Publikováno v:
Magnetism, Vol 3, Iss 3, Pp 180-203 (2023)
In this review, we consider the impact of magnetic field on the properties of strongly correlated heavy-fermion compounds such as heavy-fermion metals and frustrated insulators with quantum spin liquid. Magnetic field B can be considered a universal
Externí odkaz:
https://doaj.org/article/850e7d4ac16a47ab9f758cd0664ad801
Publikováno v:
Entropy, Vol 26, Iss 6, p 492 (2024)
Recent theoretical investigations have revealed unconventional transport mechanisms within high Brillouin zones of two-dimensional superlattices. Electrons can navigate along channels we call superwires, gently guided without brute force confinement.
Externí odkaz:
https://doaj.org/article/d451dbf9f42b4569bb0a1304816c936e
Publikováno v:
Natural Sciences, Vol 3, Iss 4, Pp n/a-n/a (2023)
Abstract Analyzing phase transitions using the inherent geometrical attributes of a system has garnered enormous interest over the past few decades. The usual candidate often used for investigation is graphene—the most celebrated material among the
Externí odkaz:
https://doaj.org/article/926fae19dcff4126adfd0962975bbb3a
Publikováno v:
New Journal of Physics, Vol 26, Iss 8, p 083020 (2024)
The mobility edge (ME) is a critical energy delineates the boundary between extended and localized states within the energy spectrum, and it plays a crucial role in understanding the metal–insulator transition in disordered or quasiperiodic systems
Externí odkaz:
https://doaj.org/article/1efaac8a57dc49a398f2b770c9b868b3