Fonte usada em uma figura Tikz/PGF

Question

Estou usando a fonte Optima para meus documentos de látex. Gostaria de alterar a fonte do rótulo do tick.

Tentei usar uma nova família de fontes e definir a opção global do tikz, mas não funcionou.

MWE:

\documentclass[oneside]{scrbook}

\usepackage{fontspec}
\usepackage[frenchmath]{newtxsf}
\setmainfont[Ligatures=TeX]{Optima}
\setmathrm{Optima}
\setmathsf{Optima}
\setmathtt{Optima}
\setboldmathrm[BoldFont={Optima ExtraBlack}]{Optima Bold}
\newfontfamily\Optima{Optima}
\usepackage[french]{babel}


%TIKZ PGF
\usepackage{tikz,tikzpagenodes,tkz-tab}
\usepackage{tikzsymbols}
\usetikzlibrary{backgrounds,shadows,matrix,arrows,arrows.meta,decorations.pathmorphing,shapes,plotmarks,shapes.geometric,decorations.markings,positioning,calc,shapes.misc,automata,cd,fit,datavisualization,datavisualization.formats.functions,patterns,ipe,decorations.shapes}
\usepackage{pgfornament}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepgfplotslibrary{groupplots}
\pgfplotsset{compat=1.11,every axis/.append style={
                    axis x line=middle,    % put the x axis in the middle
                    axis y line=middle,    % put the y axis in the middle
                    axis line style={<->}, % arrows on the axis
                    xlabel={$x$},          % default put x on x-axis
                    ylabel={$y$},          % default put y on y-axis
                    label style={font=\Optima},
                    tick label style={font=\Optima}  
                    }}


%%%
\begin{document}

TEST
\begin{tikzpicture}
\begin{axis}[
    axis lines = middle,
    xlabel = $x$,
    ylabel = {$f(x)$},
    xscale = 1,
    yscale = 0.5,
    grid   = major,
    xticklabel=\tick,
    yticklabel=\tick

]
\addplot [
    domain = -5:5, 
    samples= 100,
    color  = red,
]
{exp(-abs(x))};
%\addlegendentry{$f$}
\end{axis}
\end{tikzpicture}

\end{document}