1.University of L'Aquila, Department of Physical and Chemical Sciences, I-67100, L'Aquila, Italy
2.Consiglio Nazionale delle Ricerche (CNR), Istituto per la Microelettronica e Microsistemi (IMM), unit of Agrate Brianza, via C. Olivetti 2, 20864, Agrate Brianza, Italy
High-performance THz photodetection is unprecedentedly accessed by integrating a topological Dirac (Weyl) semimetal in a carefully designed antenna at deep-subwavelength scales.
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references
Williams, G. P. Filling the THz gap-high power sources and applications.Rep. Prog. Phys.69, 301–326 (2006)..
Chen, H. T. et al. Manipulation of terahertz radiation using metamaterials.Laser Photonics Rev.5, 513–533 (2011)..
Chen, H. T. et al. Active terahertz metamaterial devices.Nature444, 597–600 (2006)..
Lemoult, F. et al. Wave propagation control at the deep subwavelength scale in metamaterials.Nat. Phys.9, 55–60 (2013)..
Chen, S. et al. Real-space nanoimaging of THz polaritons in the topological insulator Bi2Se3.Nat. Commun.13, 1374 (2022)..
Pogna, E. A. A. et al. Mapping propagation of collective modes in Bi2Se3and Bi2Te2.2Se0.8topological insulators by near-field terahertz nanoscopy.Nat. Commun.12, 6672 (2021)..
Tang, W. W. et al. Ultrasensitive room-temperature terahertz direct detection based on a bismuth selenide topological insulator.Adv. Funct. Mater.28, 1801786 (2018)..
Viti, L. et al. Plasma-wave terahertz detection mediated by topological insulators surface states.Nano Lett.16, 80–87 (2016)..
Di Pietro, P. et al. Observation of Dirac plasmons in a topological insulator.Nat. Nanotechnol.8, 556–560 (2013)..
Armitage, N. P., Mele, E. J.&Vishwanath, A. Weyl and Dirac semimetals in three-dimensional solids.Rev. Mod. Phys.90, 015001 (2018)..
Zhang, L. B. et al. High-frequency rectifiers based on type-Ⅱ Dirac fermions.Nat. Commun.12, 1584 (2021)..
Lupi, S.&Molle, A. Emerging Dirac materials for THz plasmonics.Appl. Mater. Today20, 100732 (2020)..
Soluyanov, A. A. et al. Type-Ⅱ Weyl semimetals.Nature527, 495–498 (2015)..
Tsipas, P. et al. Direct observation at room temperature of the orthorhombic Weyl semimetal phase in thin epitaxial MoTe2.Adv. Funct. Mater.28, 1802084 (2018)..
Wang, L. et al. Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting.Light. Sci. Appl.11, 53 (2022)..
Huang, H. Q., Zhou, S. Y.&Duan, W. H. Type-Ⅱ Dirac fermions in the PtSe2class of transition metal dichalcogenides.Phys. Rev. B94, 121117(R) (2016)..
Li, Y. W. et al. Topological origin of the type-Ⅱ Dirac fermions in PtSe2.Phys. Rev. Mater.1, 074202 (2017)..