Pushing references to the bottom of the page

Question

I'm new to LaTeX and I have a two fold question, but first, this is the header that I'm using:

\documentclass[aps,pre,preprint]{revtex4}
\usepackage{graphicx,amssymb,multirow,amsmath}
\usepackage{setspace}
\bibliographystyle{apsrev}
\newcommand{\mb}{\mathbf}
\newcommand{\mc}{\mathcal}
\newcommand{\eps}{\varepsilon}
\newcommand{\pd}[2]{\frac{\partial#1}{\partial#2}}
\newcommand{\comment}[1]{}

Now, I have a couple of figures in my paper, and for convenience, I just placed all of the figures at the bottom. After the figures, I placed a \pagebreak, and then I placed my \bibliography. However, for some reason, the bibliography is coming before a certain figure. Furthermore, there's this partial line above the bibliography.

Is it possible to: 1) remove this line, and 2) place the bibliography on the last page, separated from everything else by a \pagebreak?

Answer 1

You should use \newpage or \clearpage instead of \pagebreak: the former commands have internal call to \vfill, which pushes footnotes to the bottom, while the latter command does not have it.