Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Yves Guldner"'
Autor:
Jiashu Wang, Tianyi Wang, Mykhaylo Ozerov, Zhan Zhang, Joaquin Bermejo-Ortiz, Seul-Ki Bac, Hoai Trinh, Maksym Zhukovskyi, Tatyana Orlova, Haile Ambaye, Jong Keum, Louis-Anne de Vaulchier, Yves Guldner, Dmitry Smirnov, Valeria Lauter, Xinyu Liu, Badih A. Assaf
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-9 (2023)
Abstract Topological surface-states can acquire an energy gap when time-reversal symmetry is broken by interfacing with a magnetic insulator. This gap has yet to be measured. Such topological-magnetic insulator heterostructures can host a quantized a
Externí odkaz:
https://doaj.org/article/e33e6f699c7445539d97b7b51d8c4624
Autor:
Badih A. Assaf, Thanyanan Phuphachong, Valentine V. Volobuev, Günther Bauer, Gunther Springholz, Louis-Anne de Vaulchier, Yves Guldner
Publikováno v:
npj Quantum Materials, Vol 2, Iss 1, Pp 1-7 (2017)
Topological matter: magnetooptical characterization Opening a gap in a Dirac fermion system leads to the formation of a trivial or a non-trivial phase. A non-trivial phase exhibits conductive surface or edge states, and can be attributed to a non-zer
Externí odkaz:
https://doaj.org/article/e1a3818f22da4008abe9cf58435c14c9
Autor:
Thanyanan Phuphachong, Badih A. Assaf, Valentine V. Volobuev, Günther Bauer, Gunther Springholz, Louis-Anne de Vaulchier, Yves Guldner
Publikováno v:
Crystals, Vol 7, Iss 1, p 29 (2017)
Topological crystalline insulators (TCIs) are topological materials that have Dirac surface states occurring at crystalline symmetric points in the Brillouin zone. This topological state has been experimentally shown to occur in the lead–tin salts
Externí odkaz:
https://doaj.org/article/9cff2aa867be4857802258cae3ea5e06
Autor:
Jiashu Wang, Tianyi Wang, Mykhaylo Ozerov, Zhan Zhang, Joaquin Bermejo Ortiz, Seul-Ki Bac, Hoai Trinh, Maksym Zhukovskyi, Tatyana Orlova, Haile Ambaye, Louis-Anne de Vaulchier, Jong Kahk Keum, Yves Guldner, Valeria Lauter, Dmitry Smirnov, Xinyu Liu, Badih Assaf
Topological crystalline insulator surface states can acquire an energy gap when time reversal symmetry is broken by interfacing with a magnetic insulator. Such hybrid topological-magnetic insulator structures can be used to generate novel anomalous H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70654a31194d2087628fd8cf9af665d4
https://doi.org/10.21203/rs.3.rs-2436925/v1
https://doi.org/10.21203/rs.3.rs-2436925/v1
Publikováno v:
Physical Review B
Physical Review B, American Physical Society, 2021, 103 (23), ⟨10.1103/PhysRevB.103.235302⟩
Physical Review B, American Physical Society, 2021, 103 (23), ⟨10.1103/PhysRevB.103.235302⟩
Periodic stacking of topologically trivial and non-trivial layers with opposite symmetry of the valence and conduction bands induces topological interface states that, in the strong coupling limit, hybridize both across the topological and normal ins
Autor:
Jean-Bapiste Rodriguez, Yves Guldner, Philippe Christol, Robson Ferreira, Louis-Anne de Vaulchier, Francesca Carosella, G. Krizman, Jean-Philippe Perez, Philippe Alwin
Publikováno v:
Physics and Simulation of Optoelectronic Devices XXVIII
Physics and Simulation of Optoelectronic Devices XXVIII, Feb 2020, San Francisco, United States. pp.7, ⟨10.1117/12.2546799⟩
Physics and Simulation of Optoelectronic Devices XXVIII, Feb 2020, San Francisco, United States. pp.7, ⟨10.1117/12.2546799⟩
Infrared cameras are used in a wide variety of applications, from military to civilian. Cryogenically cooled IR cameras based on photon-detector arrays are many times more sensitive and faster than uncooled microbolometer thermal imagers.Ga-free InAs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d3486404dbb82bfc2c2ca05cb14ac48
https://hal.archives-ouvertes.fr/hal-03098085
https://hal.archives-ouvertes.fr/hal-03098085
Autor:
Jean-Philippe Perez, Francesca Carosella, L. A. de Vaulchier, Jean-Baptiste Rodriguez, J. Bermejo-Ortiz, Yves Guldner, G. Krizman, Philippe Christol, A. Philippe
Publikováno v:
Journal of Applied Physics
Journal of Applied Physics, American Institute of Physics, 2021, 130 (5), pp.055704. ⟨10.1063/5.0054320⟩
Journal of Applied Physics, American Institute of Physics, 2021, 130 (5), pp.055704. ⟨10.1063/5.0054320⟩
Raising the operating temperature of the midwave infrared (MWIR) cameras up to 150 K without penalizing the performances of the photodetectors is one of the main challenges of the domain. Moreover, extending the range of detection up to 5 μm brings
Autor:
L. A. de Vaulchier, Yves Guldner, Timo Schumann, G. Krizman, Serguei Tchoumakov, Susanne Stemmer, Badih A. Assaf
Publikováno v:
Physical Review B. 100
Symmetry considerations are of extreme importance to the topological properties of crystals. A crystal field splitting $\ensuremath{\delta}$ yields Dirac nodes near the Brillouin zone center in $\mathrm{C}{\mathrm{d}}_{3}\mathrm{A}{\mathrm{s}}_{2}$,
Autor:
G. Bastard, G. Krizman, Robson Ferreira, L. A. de Vaulchier, Badih A. Assaf, Yves Guldner, G. Springholz, G. Bauer
Publikováno v:
Terahertz Emitters, Receivers, and Applications X
Terahertz Emitters, Receivers, and Applications X, Aug 2019, San Diego, United States. pp.26, ⟨10.1117/12.2529335⟩
Terahertz Emitters, Receivers, and Applications X, Aug 2019, San Diego, United States. pp.26, ⟨10.1117/12.2529335⟩
In a topological crystalline insulator such as Pb1-xSnxSe, massless Dirac states emerge at an interface with a trivial insulator. We demonstrate the great versatility of Pb1-xSnxSe electronic properties, which makes it a highly promising material to
Autor:
G. Krizman, G. Bauer, Badih A. Assaf, Robson Ferreira, G. Springholz, G. Bastard, L. A. de Vaulchier, Yves Guldner
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
In topological insulator thin films, new states of matter can be generated by hybridizing the massless Dirac states that occur at the topological insulator surface. In this work, we experimentally introduce a platform where this hybridization can be