Skip to main content

Research Repository

Advanced Search

All Outputs (107)

Tamm plasmon-polaritons: Possible electromagnetic states at the interface of a metal and a dielectric Bragg mirror (2007)
Journal Article
Kaliteevski, M., Iorsh, I., Brand, S., Abram, R., Chamberlain, J., Kavokin, A., & Shelykh, I. (2007). Tamm plasmon-polaritons: Possible electromagnetic states at the interface of a metal and a dielectric Bragg mirror. Physical review B, 76(16), https://doi.org/10.1103/physrevb.76.165415

Conventional surface plasmons have a wave vector exceeding that of light in vacuum, and therefore cannot be directly excited by light that is simply incident on the surface. However, we propose that a plasmon-polariton state can be formed at the boun... Read More about Tamm plasmon-polaritons: Possible electromagnetic states at the interface of a metal and a dielectric Bragg mirror.

Terahertz Frequency Bandpass Filters (2007)
Journal Article
Gallant, A., Kaliteevski, M., Brand, S., Wood, D., Petty, M., Abram, R., & Chamberlain, J. (2007). Terahertz Frequency Bandpass Filters. Journal of Applied Physics, 102(2), https://doi.org/10.1063/1.2756072

The design, measurement, and analysis of a range of artificial materials for use at terahertz frequencies are described. The chosen structures consist of arrays of cylindrical gold-plated pillars with period comparable to the wavelength of incident r... Read More about Terahertz Frequency Bandpass Filters.

Whispering gallery polaritons in cylindrical cavities (2007)
Journal Article
Kaliteevski, M., Brand, S., Abram, R., Kavokin, A., & Dang, L. S. (2007). Whispering gallery polaritons in cylindrical cavities. Physical review B, 75(23), https://doi.org/10.1103/physrevb.75.233309

Strong coupling of the whispering gallery modes with bulk excitons in semiconductor cylinders is demonstrated theoretically. The strong-coupling threshold is governed by the radiative decay rate of optical modes, which we analyze as a function of the... Read More about Whispering gallery polaritons in cylindrical cavities.

Non-local density functional description of poly-para-phenylene vinylene (2007)
Journal Article
Zheng, G., Clark, S., Brand, S., & Abram, R. (2007). Non-local density functional description of poly-para-phenylene vinylene. Chinese Physics Letters, 24(3), 807-810. https://doi.org/10.1088/0256-307x/24/3/061

A fully non-local exchange-correlation formalism within the framework of density functional theory, known as the weighted density approximation (WDA), has been applied to the conjugated polymer poly-para-phenylene vinylene (PPV) and is shown to lead... Read More about Non-local density functional description of poly-para-phenylene vinylene.

Artificial plasmonic materials for THz applications (2007)
Presentation / Conference Contribution
Gallant, A., Levitt, J., Kaliteevski, M., Wood, D., Petty, M., Abram, R., …Chamberlain, J. (2007). Artificial plasmonic materials for THz applications. In K. J. Linden, & L. P. Sadwick (Eds.), Terahertz and gigahertz electronics and photonics VI : 21-22 January 2007, San Jose, California, USA. https://doi.org/10.1117/12.712716

This paper reports on the development of micromachined pillar arrays for the filtering of terahertz radiation. These pillar arrays are fabricated using ultraviolet based processing of thick SU8. This micromachining technique enables the array pattern... Read More about Artificial plasmonic materials for THz applications.

Interface photonic states at the boundary between a metal and a dielectric Bragg mirror (2007)
Journal Article
Shelykh, I., Kaliteevskii, M., Kavokin, A., Brand, S., Abram, R., Chamberlain, J., & Malpuech, G. (2007). Interface photonic states at the boundary between a metal and a dielectric Bragg mirror. physica status solidi (a) – applications and materials science, 204(2), 522-525. https://doi.org/10.1002/pssa.200673231

Tamm states of light are localized interface modes inside the light-cone. In contrast to the surface modes they can have a zero in-plane wave-vector. We show that they can be formed in both TE and TM polarizations at the boundary between the isotropi... Read More about Interface photonic states at the boundary between a metal and a dielectric Bragg mirror.

Complex photonic band structure and effective plasma frequency of a two-dimensional array of metal rods (2007)
Journal Article
Brand, S., Abram, R., & Kaliteevski, M. (2007). Complex photonic band structure and effective plasma frequency of a two-dimensional array of metal rods. Physical review B, 75(3), https://doi.org/10.1103/physrevb.75.035102

A number of simple analytic theories have been proposed to define an effective plasma frequency in two-dimensional (2D) periodic systems containing metallic elements such as an array of metal rods in a simple square lattice. Such metallic structures... Read More about Complex photonic band structure and effective plasma frequency of a two-dimensional array of metal rods.

Lattice dynamics of polyaniline and poly(p-pyridyl vinyline): First-principles determination (2006)
Journal Article
Zheng, G., Clark, S., Brand, S., & Abram, R. (2006). Lattice dynamics of polyaniline and poly(p-pyridyl vinyline): First-principles determination. Physical review B, 74(16), https://doi.org/10.1103/physrevb.74.165210

First-principles density functional studies of the dynamical properties of the conjugated polymers polyaniline and poly(p-pyridyl vinyline) are presented in this work. We have employed linear response within density functional perturbation theory, as... Read More about Lattice dynamics of polyaniline and poly(p-pyridyl vinyline): First-principles determination.

Propagation of electromagnetic waves through a system of randomly placed cylinders: the partial scattering wave resonance (2006)
Journal Article
Kaliteevski, M., Beggs, D., Brand, S., Abram, R., Fletcher, J., Swift, G., & Chamberlain, J. (2006). Propagation of electromagnetic waves through a system of randomly placed cylinders: the partial scattering wave resonance. Journal of Modern Optics, 53(14), 2089-2097. https://doi.org/10.1080/09500340600799015

Propagation of electromagnetic waves through a system of randomly placed cylinders has been modelled. It was found that there is a dip in the ballistic transmission spectra for both the E and H polarizations, which is associated with scattering of th... Read More about Propagation of electromagnetic waves through a system of randomly placed cylinders: the partial scattering wave resonance.

Statistics of the eigenmodes and optical properties of one-dimensional disordered photonic crystals (2006)
Journal Article
Kaliteevski, M., Beggs, D., Brand, S., Abram, R., & Nikolaev, V. (2006). Statistics of the eigenmodes and optical properties of one-dimensional disordered photonic crystals. Physical review E: Statistical, nonlinear, and soft matter physics, 73(5), https://doi.org/10.1103/physreve.73.056616

The eigenmode spectrum and transmission properties of a certain class of one-dimensional disordered photonic crystals have been studied statistically. It is shown that the relative fluctuation of the optical width of the period of the photonic crysta... Read More about Statistics of the eigenmodes and optical properties of one-dimensional disordered photonic crystals.

Molecular dynamics calculations of the thermal expansion properties and melting points of Si and Ge (2006)
Journal Article
Timon, V., Brand, S., Clark, S., & Abram, R. (2006). Molecular dynamics calculations of the thermal expansion properties and melting points of Si and Ge. Journal of Physics: Condensed Matter, 18(13), 3489-3498. https://doi.org/10.1088/0953-8984/18/13/016

The thermal expansion properties and melting points of silicon and germanium are calculated using molecular dynamics simulations within the density functional theory framework. An isothermal–isobaric (NPT) ensemble is considered in a periodic system... Read More about Molecular dynamics calculations of the thermal expansion properties and melting points of Si and Ge.

Properties of two-dimensional photonic crystals with octagonal quasicrystalline unit cells (2006)
Journal Article
Roper, D., Beggs, D., Kaliteevski, M., Brand, S., & Abram, R. (2006). Properties of two-dimensional photonic crystals with octagonal quasicrystalline unit cells. Journal of Modern Optics, 53(3), 407-416. https://doi.org/10.1080/09500340500415076

The bandstructures of two-dimensional photonic crystals with octagonal quasicrystalline unit cells have been calculated. The existence of photonic band-gaps in such structures is demonstrated, and results showing the variation of the spectral positio... Read More about Properties of two-dimensional photonic crystals with octagonal quasicrystalline unit cells.

Stability of the photonic band gap in the presence of disorder (2006)
Journal Article
Kaliteevski, M., Beggs, D., Brand, S., Abram, R., & Nikolaev, V. (2006). Stability of the photonic band gap in the presence of disorder. Physical review B, 73(3), https://doi.org/10.1103/physrevb.73.033106

The photonic eigenmodes near a band gap of a type of one-dimensional disordered photonic crystal have been investigated statistically. For the system considered, it is found that the tail of the density of states entering the band gap is characterize... Read More about Stability of the photonic band gap in the presence of disorder.

First-principles calculations of 2x2 reconstructions of GaN(0001) surfaces involving N, Al, Ga, In, and as atoms (2005)
Journal Article
Timon, V., Brand, S., Clark, S., Gibson, M., & Abram, R. (2005). First-principles calculations of 2x2 reconstructions of GaN(0001) surfaces involving N, Al, Ga, In, and as atoms. Physical review B, 72(3), https://doi.org/10.1103/physrevb.72.035327

The ab initio studies presented here employed a pseudopotential-plane-wave method in order to obtain the minimum-energy configurations of various 22 GaN0001 surfaces involving N, Al, Ga, In, and As atoms. Comparison of the various possible reconstruc... Read More about First-principles calculations of 2x2 reconstructions of GaN(0001) surfaces involving N, Al, Ga, In, and as atoms.

Disorder induced modification of reflection and transmission spectra of a two-dimensional photonic crystal with an incomplete band-gap (2005)
Journal Article
Beggs, D., Kaliteevski, M., Brand, S., Abram, R., Cassagne, D., & Albert, J. (2005). Disorder induced modification of reflection and transmission spectra of a two-dimensional photonic crystal with an incomplete band-gap. Journal of Physics: Condensed Matter, 17(26), 4049-4055. https://doi.org/10.1088/0953-8984/17/26/005

Transmission and reflection of light in disordered two-dimensional photonic crystals with an incomplete photonic band-gap have been modelled for various levels of disorder. It is found that ballistic and scattered light display different behaviours a... Read More about Disorder induced modification of reflection and transmission spectra of a two-dimensional photonic crystal with an incomplete band-gap.

Ab initio dynamics study of poly-para-phenylene vinylene (2005)
Journal Article
Zheng, G., Clark, S., Tulip, P., Brand, S., & Abram, R. (2005). Ab initio dynamics study of poly-para-phenylene vinylene. The Journal of Chemical Physics, 123(2), Article 024904. https://doi.org/10.1063/1.1955516

We present an ab initio dynamics investigation within a density-functional perturbation theory framework of the properties of the conjugated polymer poly-para-phenylene vinylene (PPV) in both the isolated chain and crystalline states. The calculated... Read More about Ab initio dynamics study of poly-para-phenylene vinylene.

Theoretical adlayer surface morphology of wurtzite 2 × 2 reconstructions of the GaN (0001) surface (2005)
Journal Article
Timon, V., Brand, S., Clark, S., & Abram, R. (2005). Theoretical adlayer surface morphology of wurtzite 2 × 2 reconstructions of the GaN (0001) surface. Journal of Physics: Condensed Matter, 17(1), 17-26. https://doi.org/10.1088/0953-8984/17/1/002

In the first-principles calculations presented here we employ a density functional formalism using a pseudopotential plane-wave basis set in order to obtain the minimum energy configurations of various GaN(0001) 2 × 2 surfaces involving N atoms. The... Read More about Theoretical adlayer surface morphology of wurtzite 2 × 2 reconstructions of the GaN (0001) surface.

Screened Exchange Calculations of Semiconductor Band Structures (2005)
Presentation / Conference Contribution
Gibson, M. C., Clark, S. J., Brand, S., & Abram, R. A. (2005). Screened Exchange Calculations of Semiconductor Band Structures. In J. Menéndez, & C. G. Van de Walle (Eds.), . https://doi.org/10.1063/1.1994505

We have calculated the band structures of several group IV and III-V semiconductors from first principles. The technique we have employed is the screened exchange method, which is an extension of the commonly used Kohn-Sham density functional theory... Read More about Screened Exchange Calculations of Semiconductor Band Structures.

First-principles calculations of 2×2 reconstructions of GaN surfaces (2005)
Presentation / Conference Contribution
Salinero, V., Gibson, M., Brand, S., Clark, S., & Abram, R. (2005). First-principles calculations of 2×2 reconstructions of GaN surfaces. In J. Menéndez, & C. G. Van de Walle (Eds.), . https://doi.org/10.1063/1.1994143

e GaN and other group III nitrides have great importance in a wide range of technological applications. Difficulty in growing good quality epitaxial GaN currently prevents the full technological potential of this material. The ab initio studies prese... Read More about First-principles calculations of 2×2 reconstructions of GaN surfaces.