\usepackage{pstricks}
\usepackage{pst-node}
+\usepackage{slashbox}
+
%\usepackage{epic}
%\usepackage{eepic}
\end{slide}
+\begin{slide}
+
+ {\large\bf\boldmath
+ C \hkl<1 0 0> interstitial migration (VASP)
+ }
+
+ \small
+
+ \begin{minipage}{6.2cm}
+ \begin{itemize}
+ \item $3\times 3\times 3$ Type 2 supercell
+ \item \hkl<1 1 0> constraints applied
+ (\href{http://www.physik.uni-augsburg.de/~zirkelfr/download/posic/sd_rot.patch}{Patch})
+ \item Move from \hkl<1 0 0> towards\\
+ bond centered configuration
+ \end{itemize}
+ \underline{Sd Rot usage (POSCAR):}
+\begin{verbatim}
+cubic diamond
+5.480
+ 3.0 0.0 0.0
+ 0.0 3.0 0.0
+ 0.0 0.0 3.0
+216 1
+Transformed selective dynamics
+45.0 0.0
+Direct
+ ...
+\end{verbatim}
+Only works in direct mode!\\
+$z,x'$-axis rotation: $45.0^{\circ}$, $0.0^{\circ}$
+ \end{minipage}
+ \begin{minipage}{6.2cm}
+ \includegraphics[width=5cm]{c_100_110sp-i_2333_vasp.ps}
+ \includegraphics[width=5cm]{c_100_110sp-i_2333_rc_vasp.ps}\\
+ {\color{red}One fixed Si atom not enough!}\\
+ Video: \href{../video/c_in_si_233_110mig_vasp.avi}{$\rhd_{\text{local}}$ } $|$
+ \href{http://www.physik.uni-augsburg.de/~zirkelfr/download/posic/c_in_si_233_110mig_vasp.avi}{$\rhd_{\text{remote url}}$}\\
+ \end{minipage}
+
+ {\color{blue}
+ Next: Migration calculation in 2333 using CRT
+ (\hkl<0 0 -1> $\rightarrow$ \hkl<0 0 1> and \hkl<0 -1 0>)
+ }
+
+\end{slide}
+
\begin{slide}
{\large\bf\boldmath
{\color{green}%
385: 4.8565 - 0.98603\newline
386: 5.0119 - 0.01397}}
- & in progress
+ & Relaxation into\newline
+ bond centered\newline
+ configuration\newline
+ $\rightarrow$
& $E_{\text{f}}=4.0254\text{ eV}$\newline
{\tiny
{\color{blue}
\begin{slide}
{\large\bf\boldmath
- C \hkl<1 0 0> interstitial migration (VASP)
+ Defect configurations in $3\times 3\times 3$ Type 2 supercells revisited\\
}
- \small
+ \footnotesize
- \begin{minipage}{6.2cm}
+ \begin{tabular}{l|p{2.5cm}|p{2.5cm}|p{4cm}|}
+ & \hkl<0 0 -1> interstitial
+ & local minimum\newline
+ \hkl<1 1 0> C-Si split
+ & intermediate configuration\newline
+ (bond centered conf)\\
+ \hline
+ default & $E_{\text{f}}=3.15407\text{ eV}$\newline
+ {\tiny
+ 434: 4.9027 - 2.00000\newline
+ 435: 5.2543 - 0.00000}
+ & $E_{\text{f}}=??\text{ eV}$\newline
+ {\tiny
+ ??\newline
+ ??}
+ & $E_{\text{f}}=4.40907\text{ eV}$\newline
+ {\tiny
+ 434: 5.0109 - 1.00264\newline
+ 435: 5.0111 - 0.99736}\\
+ \hline
+ No symmetry & $E_{\text{f}}=3.16107\text{ eV}$\newline
+ {\tiny
+ 434: 4.9032 - 2.00000\newline
+ 435: 5.2547 - 0.00000}
+ & $E_{\text{f}}=??\text{ eV}$\newline
+ {\tiny
+ ??\newline
+ ??}
+ & $E_{\text{f}}=4.41507\text{ eV}$\newline
+ {\tiny
+ 434: 5.0113 - 1.00140\newline
+ 435: 5.0114 - 0.99860} \\
+ \hline
+ $+$ spin polarized & $E_{\text{f}}=3.16107\text{ eV}$\newline
+ {\tiny
+ {\color{blue}
+ 434: 4.9033 - 1.00000\newline
+ 435: 5.2544 - 0.00000\newline%
+ }%
+ {\color{green}%
+ 434: 4.9035 - 1.00000\newline
+ 435: 5.2550 - 0.00000}}
+ & $E_{\text{f}}=??\text{ eV}$\newline
+ {\tiny
+ {\color{blue}
+ ??\newline
+ ??\newline%
+ }%
+ {\color{green}%
+ ??\newline
+ ??}}
+ & $E_{\text{f}}=4.10307\text{ eV}$\newline
+ {\tiny
+ {\color{blue}
+ 435: 4.8118 - 1.00000\newline
+ 436: 5.5360 - 0.00000\newline%
+ }%
+ {\color{green}%
+ 433: 4.8151 - 1.00000\newline
+ 434: 5.3475 - 0.00000}} \\
+ \hline
+ \end{tabular}
+
+ \normalsize
+
+ \vspace*{0.3cm}
+
+ {\color{blue}Tracer:}\\
+ Smearing of electrons over two or more (degenerated) energy levels\\
+ $\Rightarrow$ use spin polarized calculations!
+
+\end{slide}
+
+\begin{slide}
+
+ {\large\bf\boldmath
+ Bond centered configuration revisited ($3\times 3\times 3$ Type 2)
+ }
+
+ Spin polarized calculations
+
+ {\small
+ \begin{minipage}[t]{5.8cm}
+ \underline{Kohn-Sham eigenvalues}\\
+ \begin{minipage}{2.8cm}
+ Spin up:\\
+ 430: 4.2639 - 1\newline
+ 431: 4.7332 - 1\newline
+ 432: 4.7354 - 1\newline
+ 433: 4.7700 - 1\newline
+ 434: 4.8116 - 1\newline
+ 435: 4.8118 - 1\newline
+ 436: 5.5360 - 0\newline
+ 437: 5.5623 - 0
+ \end{minipage}
+ \begin{minipage}{2.8cm}
+ Spin down:\\
+ 430: 4.2682 - 1\newline
+ 431: 4.7738 - 1\newline
+ 432: 4.8150 - 1\newline
+ 433: 4.8151 - 1\newline
+ 434: 5.3475 - 0\newline
+ 435: 5.3476 - 0\newline
+ 436: 5.5455 - 0\newline
+ 437: 5.5652 - 0
+ \end{minipage}\\[0.3cm]
\begin{itemize}
- \item $3\times 3\times 3$ Type 2 supercell
- \item \hkl<1 1 0> constraints applied
- (\href{http://www.physik.uni-augsburg.de/~zirkelfr/download/posic/sd_rot.patch}{Patch})
- \item Move from \hkl<1 0 0> towards\\
- bond centered configuration
+ \item linear Si-C-Si bond
+ \item Each Si has another 3 Si neighbours
\end{itemize}
- \underline{Sd Rot usage (POSCAR):}
-\begin{verbatim}
-cubic diamond
-5.480
- 3.0 0.0 0.0
- 0.0 3.0 0.0
- 0.0 0.0 3.0
-216 1
-Transformed selective dynamics
-45.0 0.0
-Direct
- ...
-\end{verbatim}
-Only works in direct mode!\\
-$z,x'$-axis rotation: $45.0^{\circ}$, $0.0^{\circ}$
+ \begin{center}
+ {\color{blue}Spin polarized calculations necessary!}\\[0.3cm]
+ \end{center}
+ {\scriptsize Charge density isosurface of
+ {\color{gray}spin up}, {\color{green}spin down} and
+ the {\color{blue}resulting spin up} electrons.\\
+ Two {\color{yellow} Si} atoms and one {\color{red}C}
+ atom are shown.
+ }
\end{minipage}
- \begin{minipage}{6.2cm}
- \includegraphics[width=6cm]{c_100_110sp-i_2333_vasp.ps}
- \includegraphics[width=6cm]{c_100_110sp-i_2333_rc_vasp.ps}
+ \begin{minipage}[t]{6.5cm}
+ \underline{MO diagram}\\
+ \begin{minipage}[t]{1.2cm}
+ {\color{red}Si}\\
+ {\tiny sp$^3$}\\[0.8cm]
+ \underline{${\color{red}\uparrow}$}
+ \underline{${\color{red}\uparrow}$}
+ \underline{${\color{red}\uparrow}$}
+ \underline{${\color{red}\uparrow}$}\\
+ sp$^3$
+ \end{minipage}
+ \begin{minipage}[t]{1.4cm}
+ \begin{center}
+ {\color{red}M}{\color{blue}O}\\[1.0cm]
+ \underline{${\color{blue}\uparrow}{\color{white}\downarrow}$}\\
+ $\sigma_{\text{ab}}$\\[0.5cm]
+ \underline{${\color{red}\uparrow}{\color{blue}\downarrow}$}\\
+ $\sigma_{\text{b}}$
+ \end{center}
+ \end{minipage}
+ \begin{minipage}[t]{1.0cm}
+ \begin{center}
+ {\color{blue}C}\\
+ {\tiny sp}\\[0.2cm]
+ \underline{${\color{white}\uparrow\uparrow}$}
+ \underline{${\color{white}\uparrow\uparrow}$}\\
+ 2p\\[0.4cm]
+ \underline{${\color{blue}\uparrow}{\color{blue}\downarrow}$}
+ \underline{${\color{blue}\uparrow}{\color{blue}\downarrow}$}\\
+ sp
+ \end{center}
+ \end{minipage}
+ \begin{minipage}[t]{1.4cm}
+ \begin{center}
+ {\color{blue}M}{\color{green}O}\\[1.0cm]
+ \underline{${\color{blue}\uparrow}{\color{white}\downarrow}$}\\
+ $\sigma_{\text{ab}}$\\[0.5cm]
+ \underline{${\color{green}\uparrow}{\color{blue}\downarrow}$}\\
+ $\sigma_{\text{b}}$
+ \end{center}
+ \end{minipage}
+ \begin{minipage}[t]{1.2cm}
+ \begin{flushright}
+ {\color{green}Si}\\
+ {\tiny sp$^3$}\\[0.8cm]
+ \underline{${\color{green}\uparrow}$}
+ \underline{${\color{green}\uparrow}$}
+ \underline{${\color{green}\uparrow}$}
+ \underline{${\color{green}\uparrow}$}\\
+ sp$^3$
+ \end{flushright}
+ \end{minipage}\\[0.4cm]
+ \begin{flushright}
+ \includegraphics[width=6cm]{c_100_mig_vasp/im_spin_diff.eps}
+ \end{flushright}
\end{minipage}
+ }
- {\color{blue}
- Next: Migration calculation in 2333 using CRT
- (\hkl<0 0 -1> $\rightarrow$ \hkl<0 0 1> and \hkl<0 -1 0>)
+\end{slide}
+
+\begin{slide}
+
+ {\large\bf\boldmath
+ \hkl<0 0 -1> configuration revisited ($3\times 3\times 3$ Type 2)
}
+ Spin polarized calculations
+
+ {\small
+ \begin{minipage}[t]{5.8cm}
+ \underline{Kohn-Sham eigenvalues}\\
+ \begin{minipage}{2.8cm}
+ Spin up:\\
+ 430: 4.3317 - 1\newline
+ 431: 4.7418 - 1\newline
+ 432: 4.8014 - 1\newline
+ 433: 4.8060 - 1\newline
+ 434: 4.9033 - 1\newline
+ 435: 5.2544 - 0\newline
+ 436: 5.5723 - 0\newline
+ 437: 5.5848 - 0
+ \end{minipage}
+ \begin{minipage}{2.8cm}
+ Spin down:\\
+ 430: 4.3317 - 1\newline
+ 431: 4.7420 - 1\newline
+ 432: 4.8013 - 1\newline
+ 433: 4.8059 - 1\newline
+ 434: 4.9035 - 1\newline
+ 435: 5.2550 - 0\newline
+ 436: 5.5724 - 0\newline
+ 437: 5.5846 - 0
+ \end{minipage}
+ \end{minipage}
+ \begin{minipage}[t]{6.5cm}
+ \underline{MO diagram}\\
+ \begin{minipage}[t]{1.2cm}
+ {\color{red}Si}\\
+ {\tiny sp$^2$}\\[0.1cm]
+ \underline{${\color{white}\uparrow}$}\\
+ p\\[0.4cm]
+ \underline{${\color{red}\uparrow\downarrow}$}
+ \underline{${\color{red}\uparrow}{\color{white}\downarrow}$}
+ \underline{${\color{red}\uparrow}{\color{white}\downarrow}$}\\
+ sp$^2$
+ \end{minipage}
+ \begin{minipage}[t]{1.2cm}
+ \begin{flushright}
+ {\color{red}M}\\[1.0cm]
+ \underline{${\color{white}\uparrow}{\color{white}\downarrow}$}\\
+ $\sigma_{\text{ab}}$\\[0.5cm]
+ \underline{${\color{red}\uparrow}{\color{blue}\downarrow}$}\\
+ $\sigma_{\text{b}}$
+ \end{flushright}
+ \end{minipage}
+ \begin{minipage}[t]{1.2cm}
+ \begin{flushleft}
+ {\color{blue}O}\\[0.4cm]
+ \underline{${\color{white}\uparrow}{\color{white}\downarrow}$}\\
+ $\pi_{\text{ab}}$\\[0.5cm]
+ \underline{${\color{red}\uparrow}{\color{blue}\downarrow}$}\\
+ $\pi_{\text{b}}$
+ \end{flushleft}
+ \end{minipage}
+ \begin{minipage}[t]{2.0cm}
+ \begin{center}
+ {\color{blue}C}\\
+ {\tiny sp$^2$}\\[0.5cm]
+ \underline{${\color{white}\uparrow\uparrow}$}\\
+ p\\[0.4cm]
+ \underline{${\color{blue}\uparrow}{\color{blue}\downarrow}$}
+ \underline{${\color{blue}\uparrow}{\color{white}\downarrow}$}
+ \underline{${\color{blue}\uparrow}{\color{white}\downarrow}$}\\
+ sp$^2$
+ \end{center}
+ \end{minipage}
+ \end{minipage}
+ }
+
+ \vspace*{0.4cm}
+
+ \begin{itemize}
+ \item Si-C double bond
+ \item Si and C atom have another 2 Si neighbours
+ \end{itemize}
+
+ \begin{center}
+ {\color{blue}Spin polarized calculations {\color{red}not} necessary!}
+ \end{center}
+
\end{slide}
\begin{slide}
{\large\bf\boldmath
- \hkl<0 0 -1> to \hkl <0 0 1> migration
- in the $3\times 3\times 3$ Type 2 supercell
+ New default parameter set\\[1cm]
+ }
+
+ Since some defect configurations need spin polarized calculations ...\\[1cm]
+
+ from now on the default parameter set\\
+ {\bf\color{blue}
+ $+$ no symmetry\\
+ $+$ spin polarized\\
}
+ \ldots is used!\\[1cm]
\end{slide}
\begin{slide}
{\large\bf\boldmath
- \hkl<0 0 -1> to \hkl <0 -1 0> migration
- in the $3\times 3\times 3$ Type 2 supercell
+ \hkl<0 0 -1> to \hkl<0 0 1> migration
+ in the $3\times 3\times 3$ Type 2 supercell
}
\end{slide}
\begin{slide}
{\large\bf\boldmath
- Defect configurations in $3\times 3\times 3$ Type 2 supercells revisited
+ \hkl<0 0 -1> to \hkl<0 -1 0> migration
+ in the $3\times 3\times 3$ Type 2 supercell
}
\end{slide}
\end{slide}
+\begin{slide}
+
+ {\large\bf\boldmath
+ Combination of defects
+ }
+
+ \begin{itemize}
+ \item Supercell: $3\times 3\times 3$ Type 2
+ \item Starting configuration: \hkl<0 0 -1> C-Si interstitial
+ \item Energies: $E_{\text{f}}$ of the interstitial combinations in eV
+ \end{itemize}
+
+ \underline{Along \hkl<1 1 0>:}
+
+ \begin{tabular}{|l|p{1.8cm}|p{1.8cm}|p{1.8cm}|p{1.8cm}|}
+ \hline
+ {\scriptsize
+ \backslashbox{2nd interstitial}{Distance $[\frac{a}{4}]$}
+ }
+ & \hkl<1 1 -1> & \hkl<2 2 0> & \hkl<3 3 -1> & \hkl<4 4 0>\\
+ \hline
+ \hkl<0 0 -1> & 6.23514\newline {\color{blue}6.23514}
+ & 4.65214\newline {\color{blue}4.65014}
+ & 5.97314\newline {\color{blue}5.97314}
+ & 6.45514\newline {\color{blue}6.45714} \\
+ \hline
+ \hkl<0 0 1> & 6.65114\newline {\color{blue}6.65114}
+ & 4.78514\newline {\color{blue}4.78314}
+ & 6.53614\newline {\color{blue}6.53614}
+ & 6.18914\newline {\color{blue}6.18914} \\
+ \hline
+ \hkl<1 0 0>, \hkl<0 1 0> & 4.07014\newline alkmene
+ & 4.93814
+ & 5.72914
+ & 6.00214\\
+ \hline
+ \hkl<-1 0 0>, \hkl<0 -1 0> & TODO & TODO & TODO & TODO\\
+ \hline
+ \end{tabular}
+
+ Spin polarized and {\color{blue}non spin polarized} results
+
+\end{slide}
+
\begin{slide}
{\large\bf
projects / lectures / latex.git / blobdiff