2019
DOI: 10.1021/acsnano.8b08649
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Manifestation of Kinetic Inductance in Terahertz Plasmon Resonances in Thin-Film Cd3As2

Abstract: Three-dimensional (3D) semimetals have been predicted and demonstrated to have a wide variety of interesting properties associated with its linear energy dispersion. In analogy to twodimensional (2D) Dirac semimetals, such as graphene, Cd3As2, a 3D semimetal, has shown ultrahigh mobility, large Fermi velocity, and has been hypothesized to support plasmons at terahertz frequencies. In this work, we demonstrate synthesis of high-quality large-area Cd3As2 thin-films through thermal evaporation as well as the expe… Show more

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Cited by 30 publications
(29 citation statements)
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“…With first experiments on three-dimensional Dirac plasmons appearing recently [27][28][29][30][31][32], the results of this paper should be accessible in current experiments. Going forward, the dependence on the magnetic field provides a novel way to tailor the Dirac plasmon frequency.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…With first experiments on three-dimensional Dirac plasmons appearing recently [27][28][29][30][31][32], the results of this paper should be accessible in current experiments. Going forward, the dependence on the magnetic field provides a novel way to tailor the Dirac plasmon frequency.…”
Section: Resultsmentioning
confidence: 99%
“…Our main focus are three-dimensional gapless Dirac semimetals, for which the single-particle dispersion is a linear function of momentum. For these systems, the theoretical study of plasmons is a flourishing subfield [13][14][15][16][17][18][19][20][21][22][23][24][25][26], and first measurements of plasmons have recently been reported in optical studies [27][28][29][30][31] and electron-loss spectroscopy [32].…”
Section: Introductionmentioning
confidence: 99%
“…The existence of such defined helicity charge unites the Weyl points with helicity‐degenerate valleys in 2D transition metal dichalcogenides (TMDCs), which recently emerged as a versatile platform for valleytronics. [ 149 ] The superior properties of WSs in microwave and THz frequency ranges, including relatively low loss caused by a large momentum scattering time ≈1 ps at room temperature, [ 150 ] epsilon‐near‐zero and hyperbolic regime, make them very promising for electronic and optoelectronic applications.…”
Section: Advanced Nonreciprocal Materials: Wss Metamaterials Magnetmentioning
confidence: 99%
“…[ 17–22 ] Hybridizing metasurfaces with active natural materials has led to exceptional opportunities in real‐time THz functional devices, and significant progresses have been obtained in the THz spatiotemporal manipulations. [ 1,23–25 ] In the last decade, there has been a growing interest in actualizing the multidimensional modulation in THz metadevices by implementing mechanical, [ 26–30 ] electrical, [ 31–42 ] thermal, [ 43–46 ] and optical [ 47–62 ] approaches. Among them, the contact‐free all‐optical means has gained a fast appreciation by taking full advantage of high‐speed modulation and switching, whose figure of merits depend on ultrafast semiconductor relaxations to a large extent.…”
Section: Introductionmentioning
confidence: 99%
“…Among them, the contact‐free all‐optical means has gained a fast appreciation by taking full advantage of high‐speed modulation and switching, whose figure of merits depend on ultrafast semiconductor relaxations to a large extent. [ 63 ] Considering the rapid emergence of different photophysics, scientists and researchers continuously pursue numerous photoactive materials to tailor THz waves, which embrace the traditional semiconductors, [ 47,50,51,64–67 ] superconductors, [ 68 ] perovskites, [ 52,54 ] Weyl semimetals, [ 48 ] topological insulators, [ 56 ] and transition metal dichalcogenides. [ 57,69 ] However, these materials suffer from a single functionality in terms of switching one resonant state with ultrafast temporal evolution, owing to the spatially unchangeable nature of metasurfaces.…”
Section: Introductionmentioning
confidence: 99%