كيف أصمم مبيان 3D على برنامج LaTeX؟

سأحاول تصميم مبياني باستعمال Tikz، ليبدو المبيان أكثر ما يمكن حقيقي وأقرب إلى الواقعية، بهذا الشكل:

والكود المسؤول عن الشكل السابق، هو كالآتي:

\documentclass{standalone}
\usepackage{amsmath,  latexsym, amscd, amsthm}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{tikz}
\usepackage{tikz-3dplot}
   \usetikzlibrary{decorations.text}

\begin{document}

\begin{tikzpicture}[scale=9,domain=0.00001:0.75]
\def\myshift#1{\raisebox{-2.5ex}}
\draw[postaction={decorate,decoration={text along path,text align=center,text={|\sffamily\myshift|superconducting state}}}] (0,0.55) parabola (0.75,0,0);
\def\myshift#1{\raisebox{-2.5ex}}
\draw[postaction={decorate,decoration={text along path,text align=center,text={|\sffamily\myshift|normal state}}}] (0,0,0.75) parabola (0.75,0,0);
\draw (0,0.55,0) parabola (0,0,0.75);
\draw[color=gray,dashed] (0,0,0) -- (0.75,0,0);
\draw[color=gray,dashed] (0,0,0) -- (0,0.55,0);
\draw[color=gray,dashed] (0,0,0) -- (0,0,0.75);
\draw[thick,->] (0.75,0,0) -- (1,0,0) node[anchor=north east]{$H(A\ldotp m^{-1})$};
\draw[thick,->] (0,0.55,0) -- (0,0.75,0) node[anchor=north west]{$T(K)$};
\draw[thick,->] (0,0,0.75) -- (0,0,1) node[anchor=south east]{$I(A)$};
\shade[top color=white!10,bottom color=blue!90,opacity=.30] 
  (0,0,0.75) to (0.2,0,0.73) to (0.3,0,0.68) to (0.4,0,0.6) to (0.5,0,0.51) to (0.6,0,0.38) to (0.7,0,0.17) to (0.75,0) to (0.7,0.07088888888) to (0.6,0.198) to (0.5,0.30555555555) to (0.4,0.39355555555) to (0.3,0.462) to (0.2,0.51088888888) to (0.1,0.54022222222) to (0,0.55) to (0,0.59022222222,0.1) to (0,0.56088888888,0.2) to (0,0.529,0.3) to (0,0.4545555555,0.4) to (0,0.36555555555,0.5) to (0,0.25,0.6);
\shade[shading=ball, ball color=red] (0.75,0,0) circle (.045);
\shade[shading=ball, ball color=red] (0,0.55,0) circle (.045);
\shade[shading=ball, ball color=red] (0,0,0.75) circle (.045);
\draw (0.75,0,0) node [white] {$H_c$};
\draw (0,0.55,0) node [white] {$T_c$};
\draw (0,0,0.75) node [white] {$I_c$};
\end{tikzpicture}


\end{document}