Publications

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TMDC-Based Topological Nanospaser: Single and Double Threshold Behavior
We theoretically study a topological nanospaser, which consists of a silver nanospheroid and MoS$_2$ monolayer flake of a circular …
Rupesh Ghimire, Fatemeh Nematollahi, 吳致盛, Vadym Apalkov, and Mark I. Stockman
DOI
TMDC-Based Topological Nanospaser: Single and Double Threshold Behavior
Topological resonance in Weyl semimetals in a circularly polarized optical pulse
We study theoretically the ultrafast electron dynamics of three-dimensional Weyl semimetals in the field of a laser pulse. For a …
Fatemeh Nematollahi, S. Azar Oliaei Motlagh, 吳致盛, Rupesh Ghimire, Vadym Apalkov, Mark I. Stockman
DOI
Topological resonance in Weyl semimetals in a circularly polarized optical pulse
Topological Nanospaser
We propose a nanospaser made of an achiral plasmonic–metal nanodisk and a two-dimensional chiral gain medium – a monolayer nanoflake of …
Rupesh Ghimire, 吳致盛, Vadym Apalkov, and Mark I. Stockman
DOI
Topological Nanospaser
Topological Spaser
We theoretically introduce a topological spaser, which consists of a hexagonal array of plasmonic metal nanoshells containing an …
吳致盛, Vadym Apalkov, Mark I Stockman
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Topological Spaser
Characteristic distance of resonance energy transfer coupled with surface plasmon polaritons
We investigate resonance energy transfer (RET) between a donor–acceptor pair above a gold surface (including bulk and thin-film …
吳致盛, Yen-Cheng Lin, Yae-Lin Sheu, Liang-Yan Hsu
DOI
Characteristic distance of resonance energy transfer coupled with surface plasmon polaritons
Fundamentally fastest optical processes at the surface of a topological insulator
We predict that a single oscillation of a strong optical pulse can significantly populate the surface conduction band of a …
S. Azar Oliaei Motlagh, 吳致盛, Vadym Apalkov, Mark I. Stockman
DOI
Fundamentally fastest optical processes at the surface of a topological insulator
Femtosecond valley polarization and topological resonances in transition metal dichalcogenides
We theoretically introduce the fundamentally fastest induction of a significant population and valley polarization in a monolayer of a …
S. Azar Oliaei Motlagh, 吳致盛, Vadym Apalkov, Mark I. Stockman
DOI
Femtosecond valley polarization and topological resonances in transition metal dichalcogenides
Imaging the localized plasmon resonance modes in graphene nanoribbons
We report a nanoinfrared (IR) imaging study of the localized plasmon resonance modes of graphene nanoribbons (GNRs) using a …
F. Hu, Y. Luan, Z. Fei, I. Z. Palubski, M. D. Goldflam, S. Dai, 吳致盛, K. W. Post, G. C. A. M. Janssen, M. M. Fogler, and D. N. Basov
DOI
Imaging the localized plasmon resonance modes in graphene nanoribbons
Faraday Rotation Due to Surface States in the Topological Insulator (Bi$_{1–x}$Sb$_x$)$_2$Te$_3$
Using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)$_2$Te$_3$ thin films on InP substrates. From the …
Yinming Shao, Kirk W. Post, 吳致盛, Siyuan Dai, Alex J. Frenzel, Anthony R. Richardella, Joon Sue Lee, Nitin Samarth, Michael M. Fogler, Alexander V. Balatsky, Dmitri E. Kharzeev, and D. N. Basov
DOI
Faraday Rotation Due to Surface States in the Topological Insulator (Bi$_{1–x}$Sb$_x$)$_2$Te$_3$
Edge and surface plasmons in graphene nanoribbons
We report on nano-infrared (IR) imaging studies of confined plasmon modes inside patterned graphene nanoribbons (GNRs) fabricated with …
Z. Fei, M. D. Goldflam, 吳致盛, S. Dai, M. Wagner, A. S. McLeod, M. K. Liu, K. W. Post, S. Zhu, G. C. A. M. Janssen, M. M. Fogler, D. N. Basov
DOI
Edge and surface plasmons in graphene nanoribbons
Topological insulators are tunable waveguides for hyperbolic polaritons
We present a theoretical analysis showing that layered topological insulators, for example, Bi$_2$Se$_3$ are optically hyperbolic …
吳致盛, D.N. Basov, M.M. Fogler
DOI
Topological insulators are tunable waveguides for hyperbolic polaritons
Sum-Rule Constraints on the Surface State Conductance of Topological Insulators
We report the Drude oscillator strength $D$ and the magnitude of the bulk band gap $E_g$ of the epitaxially grown, topological …
吳致盛, D.N. Basov, M.M. Fogler
DOI
Sum-Rule Constraints on the Surface State Conductance of Topological Insulators
Plasmons in graphene moiré superlattices
Moiré patterns are periodic superlattice structures that appear when two crystals with a minor lattice mismatch are superimposed. A …
G. X. Ni, H. Wang, 吳致盛, Z. Fei, M. D. Goldflam, F. Keilmann, B. Özyilmaz, A. H. Castro Neto, X. M. Xie, M. M. Fogler, D. N. Basov
DOI
Plasmons in graphene moiré superlattices
Scattering of two-dimensional massless Dirac electrons by a circular potential barrier
We calculate the differential, total, and transport cross-sections for scattering of two-dimensional massless Dirac electrons by a …
吳致盛, M.M. Fogler
DOI
Scattering of two-dimensional massless Dirac electrons by a circular potential barrier
Infrared nanospectroscopy and imaging of collective superfluid excitations in anisotropic superconductors
We investigate near-field infrared spectroscopy and superfluid polariton imaging experiments on conventional and unconventional …
H. T. Stinson, 吳致盛, B. Y. Jiang, Z. Fei, A. S. Rodin, B. C. Chapler, A. S. McLeod, A. Castro Neto, Y. S. Lee, M. M. Fogler, D. N. Basov
DOI
Infrared nanospectroscopy and imaging of collective superfluid excitations in anisotropic superconductors