Kirjahaku

The Porsche 993 was styled by English designer Tony Hatter and launched in 1994; the 993 Cabriolet was launched shortly afterwards at the March 1994 Geneva Motor Show. By February 1995, the Porsche 993RS had arrived and it came with bucket-style race seats and three-piece magnesium eighteen-inch wheels. The discontinuation of the 993 marked the end of air-cooled Porsches. This book looks at all the variants with detailed chassis numbers and production figures being given. Models covered are: Porsche 993 Targa and Turbo; Porsche 993RS and 993RSR; Porsche 993 Carrera and Carrera S; Porsche 993 Carrera 4 and 4S; Porsche 993 Turbo S; Porsche 993 GT-2.

Aston Martin's V8 Vantage Roadster was unveiled on the 29th November 2006 at the Los Angeles Show. The new Aston Martin Vantage Roadster had the same running gear as the V8 Vantage coupe including its 380bhp 4.3 litre V8 engine. This book looks at the Vantage Coupe, Vantage Roadster, Vantage road cars and the Vantage N24, the Prodrive Rally GT Vantage as well as the very latest Aston Martin Vantage S.

The thesis presents experimental and theoretical results about the surface dynamics and the surface Dirac fermion (DF) spectral function of the strong topological insulators Bi2Te3 and Bi2Se3. The experimental results reveal the presence of a strong Kohn anomaly in the measured surface phonon dispersion of a low-lying optical mode, and the absence of surface Rayleigh acoustic phonons. Fitting the experimental data to theoretical models employing phonon Matsubara functions allowed the extraction of the matrix elements of the coupling Hamiltonian and the modifications to the surface phonon propagator that are encoded in the phonon self-energy. This allowed, for the first time, calculation of phonon mode-specific DF coupling ??(q) from experimental data, with average coupling significantly higher than typical values for metals, underscoring the strong coupling between optical surface phonons and surface DFs in topological insulators. Finally, to connect to experimental results obtained from photoemission spectroscopies, an electronic (DF) Matsubara function was constructed using the determined electron-phonon matrix elements and the optical phonon dispersion. This allowed calculation of the DF spectral function and density of states, allowing for comparison with photoemission and scanning tunneling spectroscopies. The results set the necessary energy resolution and extraction methodology for calculating ? from the DF perspective.

The thesis presents experimental and theoretical results about the surface dynamics and the surface Dirac fermion (DF) spectral function of the strong topological insulators Bi2Te3 and Bi2Se3. The experimental results reveal the presence of a strong Kohn anomaly in the measured surface phonon dispersion of a low-lying optical mode, and the absence of surface Rayleigh acoustic phonons. Fitting the experimental data to theoretical models employing phonon Matsubara functions allowed the extraction of the matrix elements of the coupling Hamiltonian and the modifications to the surface phonon propagator that are encoded in the phonon self-energy. This allowed, for the first time, calculation of phonon mode-specific DF coupling ??(q) from experimental data, with average coupling significantly higher than typical values for metals, underscoring the strong coupling between optical surface phonons and surface DFs in topological insulators. Finally, to connect to experimental results obtained from photoemission spectroscopies, an electronic (DF) Matsubara function was constructed using the determined electron-phonon matrix elements and the optical phonon dispersion. This allowed calculation of the DF spectral function and density of states, allowing for comparison with photoemission and scanning tunneling spectroscopies. The results set the necessary energy resolution and extraction methodology for calculating ? from the DF perspective.