\pdfoutput=0
-\documentclass[landscape,semhelv,draft]{seminar}
-%\documentclass[landscape,semhelv]{seminar}
+%\documentclass[landscape,semhelv,draft]{seminar}
+\documentclass[landscape,semhelv]{seminar}
\usepackage{verbatim}
\usepackage[greek,german]{babel}
\end{pspicture}
-\begin{picture}(0,0)(-10,68)
+\begin{picture}(0,0)(-3,68)
\includegraphics[width=2.6cm]{wide_band_gap.eps}
\end{picture}
-\begin{picture}(0,0)(-295,-165)
-\includegraphics[width=3cm]{sic_led.eps}
+\begin{picture}(0,0)(-285,-162)
+\includegraphics[width=3.38cm]{sic_led.eps}
\end{picture}
-\begin{picture}(0,0)(-215,-165)
-\includegraphics[width=2.5cm]{6h-sic_3c-sic.eps}
+\begin{picture}(0,0)(-195,-162)
+\includegraphics[width=2.8cm]{6h-sic_3c-sic.eps}
\end{picture}
\begin{picture}(0,0)(-313,65)
\includegraphics[width=2.2cm]{infineon_schottky.eps}
\begin{picture}(0,0)(-220,65)
\includegraphics[width=2.9cm]{sic_wechselrichter_ise.eps}
\end{picture}
+\begin{picture}(0,0)(0,-160)
+\includegraphics[width=3.0cm]{sic_proton.eps}
+\end{picture}
+\begin{picture}(0,0)(-60,65)
+\includegraphics[width=3.4cm]{sic_switch.eps}
+\end{picture}
\end{slide}
\psellipse[linecolor=blue](11.5,5.8)(0.3,0.5)
\rput{-20}{\psellipse[linecolor=blue](3.3,8.1)(0.3,0.5)}
\psline[linewidth=4pt]{->}(4.0,2)(4.5,2)
+\rput(12.7,0.3){\rnode{init}{\psframebox[fillstyle=solid,fillcolor=hb]{
+ $4a_{\text{Si}}=5a_{\text{SiC}}$
+ }}}
+\rput(12.2,8){\rnode{init}{\psframebox[fillstyle=solid,fillcolor=hb]{
+\hkl(h k l) planes match
+ }}}
\end{pspicture}
-
+
\end{slide}
\begin{slide}
\[
\rightarrow
\text{Fourier series: } \Phi_i=\sum_{|G+k|<G_{\text{cut}}} c_j^i \phi_j(r), \quad E_{\text{cut}}=\frac{\hbar^2}{2m}G^2_{\text{cut}}
+\qquad ({\color{blue}300\text{ eV}})
\]
- \item \underline{$k$-point sampling} - $\Gamma$-point only calculations
+ \item \underline{Brillouin zone sampling} -
+ {\color{blue}$\Gamma$-point only} calculations
\item \underline{Pseudo potential}
- consider only the valence electrons
\item \underline{Code} - VASP 4.6
\item Structural optimization: Conjugate gradient method
\end{itemize}
+\begin{pspicture}(0,0)(0,0)
+\psellipse[linecolor=blue](1.5,6.75)(0.5,0.3)
+\end{pspicture}
+
\end{slide}
\begin{slide}
Long time scale simulations at maximum temperature
}
- \small
-
-\vspace{1cm}
+\small
+\vspace{0.1cm}
+
\underline{Differences}
\begin{itemize}
- \item Cubic volume $\Rightarrow$ spherical volume
- \item Amount of C atoms: 6000 $\rightarrow$ 5500
\item Temperature set to $0.95 \cdot T_{\text{m}}$
+ \item Cubic insertion volume $\Rightarrow$ spherical insertion volume
+ \item Amount of C atoms: 6000 $\rightarrow$ 5500
+ $\Leftrightarrow r_{\text{prec}}=0.3\text{ nm}$
\item Simulation volume: 21 unit cells of c-Si in each direction
\end{itemize}
-\vspace{1cm}
+\footnotesize
+
+\vspace{0.3cm}
+\begin{minipage}[t]{4.5cm}
\begin{center}
- {\bf
-Simulations in progress! :)\\
- }
-... show evolution of radial distribution in ns timesteps ...
+\underline{Low C concentration, Si-C}
+\includegraphics[width=4.5cm]{c_in_si_95_v1_si-c.ps}\\
+Sharper peaks!
+\end{center}
+\end{minipage}
+\begin{minipage}[t]{4.5cm}
+\begin{center}
+\underline{Low C concentration, C-C}
+\includegraphics[width=4.5cm]{c_in_si_95_v1_c-c.ps}\\
+Sharper peaks!\\
+No C agglomeration!
+\end{center}
+\end{minipage}
+\begin{minipage}[t]{4cm}
+\begin{center}
+\underline{High C concentration}
+\includegraphics[width=4.5cm]{c_in_si_95_v2.ps}\\
+No significant changes
\end{center}
+\end{minipage}
-\vspace{4cm}
+\begin{center}
+\framebox{
+Long time scales and high temperatures most probably not sufficient enough!
+}
+\end{center}
\end{slide}
\vspace{0.3cm}
\begin{minipage}{6.2cm}
-\includegraphics[width=6cm,draft=false]{pc_0.ps}
+\includegraphics[width=6cm]{pc_0.ps}
\end{minipage}
\begin{minipage}{6.8cm}
\underline{Results}
Acknowledgements
}
+ \vspace{0.1cm}
+
\small
+ Thanks to \ldots
+
+ \underline{Augsburg}
+ \begin{itemize}
+ \item Prof. B. Stritzker (accepting a simulator at EP \RM{4})
+ \item Ralf Utermann (EDV)
+ \end{itemize}
+
+ \underline{Helsinki}
+ \begin{itemize}
+ \item Prof. K. Nordlund (MD)
+ \end{itemize}
+ \underline{Munich}
+ \begin{itemize}
+ \item Bayerische Forschungsstiftung (financial support)
+ \end{itemize}
+
+ \underline{Paderborn}
+ \begin{itemize}
+ \item Prof. J. Lindner (SiC)
+ \item Prof. G. Schmidt (DFT + financial support)
+ \item Dr. E. Rauls (DFT + SiC)
+ \end{itemize}
+
+\vspace{0.2cm}
+
+\begin{center}
+\framebox{
+\bf Thank you for your attention!
+}
+\end{center}
\end{slide}