Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Yoonseok Hwang"'
Autor:
Chiara Devescovi, Antonio Morales-Pérez, Yoonseok Hwang, Mikel García-Díez, Iñigo Robredo, Juan Luis Mañes, Barry Bradlyn, Aitzol García-Etxarri, Maia G. Vergniory
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract Axion insulators are 3D magnetic topological insulators supporting hinge states and quantized magnetoelectric effects, recently proposed for detecting dark-matter axionic particles via their axionic excitations. Beyond theoretical interest,
Externí odkaz:
https://doaj.org/article/fc8159ea2e4a45398e0c01f0dc5904b3
Autor:
Kuan-Sen Lin, Giandomenico Palumbo, Zhaopeng Guo, Yoonseok Hwang, Jeremy Blackburn, Daniel P. Shoemaker, Fahad Mahmood, Zhijun Wang, Gregory A. Fiete, Benjamin J. Wieder, Barry Bradlyn
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-17 (2024)
Abstract Symmetry-protected topological crystalline insulators (TCIs) have primarily been characterized by their gapless boundary states. However, in time-reversal- ( $${{{{{{{\mathcal{T}}}}}}}}$$ T -) invariant (helical) 3D TCIs—termed higher-orde
Externí odkaz:
https://doaj.org/article/a76405e0d91d4c41ada160a4c9691ee8
Autor:
Chiara Devescovi, Antonio Morales-Pérez, Yoonseok Hwang, Mikel García-Díez, Iñigo Robredo, Juan Luis Mañes, Barry Bradlyn, Aitzol García-Etxarri, Maia G. Vergniory
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/c05bc4628137460cb76577e0f4d0314c
Autor:
Yoonseok Hwang, Yuting Qian, Junha Kang, Jehyun Lee, Dongchoon Ryu, Hong Chul Choi, Bohm-Jung Yang
Publikováno v:
npj Computational Materials, Vol 9, Iss 1, Pp 1-8 (2023)
Abstract Topological crystalline insulators (TCIs) can host anomalous surface states which inherits the characteristics of crystalline symmetry that protects the bulk topology. Especially, the diversity of magnetic crystalline symmetries indicates th
Externí odkaz:
https://doaj.org/article/67a512c5e9b343dd9b4504b21f961a06
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Landau levels are normally bounded by upper and lower band edges at zero magnetic field. Here, the authors predict a system with isolated flat bands, where anomalous Landau level spreading appears outside the zero-field energy bounds.
Externí odkaz:
https://doaj.org/article/51cf02ead30b4f12bb1188b079276f84
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
The topological characteristics of acoustic phonons with triple degeneracy remain largely unexplored. Here, the authors propose a topological acoustic triple point characterized by a topological charge in a three-band system with PT symmetry.
Externí odkaz:
https://doaj.org/article/fae467e5135f449fbb1826c3471db91a
Publikováno v:
Clinical and Experimental Otorhinolaryngology, Vol 6, Iss 4, Pp 259-262 (2013)
Epileptic nystagmus is defined as a quick, repetitive jerky movement of the eyeball associated with seizure activity. In cases of epileptic nystagmus associated with ictal discharge from multiple brain areas, localization of the exact epileptogenic z
Externí odkaz:
https://doaj.org/article/327114c12261407fbfdb22c04587f293
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Nature Communications
Nature Communications
Acoustic phonon is a classic example of triple degeneracy point in band structure. This triple point always appears in phonon spectrum because of the Nambu–Goldstone theorem. Here, we show that this triple point can carry a topological charge \docu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0643bd824c8622804e88d88e8fc1e609
https://doi.org/10.1038/s41467-021-27158-y
https://doi.org/10.1038/s41467-021-27158-y
In this work, we develop a systematic method of constructing flat-band models with and without band crossings. Our construction scheme utilizes the symmetry and spatial shape of a compact localized state (CLS) and also the singularity of the flat-ban
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73753226d09066d104db5f7023fe4e58
Flat bands have band crossing points with other dispersive bands in many systems including the canonical flat band models in the Lieb and kagome lattices. Here we show that some of such band degeneracy points are unavoidable because of the symmetry r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4eb76835ea4eb3a8269257f40f228bf7