\documentclass[a4paper,onecolumn]{revtex4}

\usepackage{graphicx}% Include figure files
\usepackage{bm}% bold math
\begin{document}

\title{My Title}
\author{R.F.L.Evans$^{1}$}

\affiliation{$^{1}$Department of Physics, University of York, York, YO10 5DD, UK}

\begin{abstract}
This is the abstract.
\end{abstract}

\maketitle

Some text. An equation:
\begin{equation}
\label{Hamiltonian}
\mathcal{H}=-\sum_{i,j} J_{ij}\mathbf{S}_i\mathbf{S}_j - \sum_{i}K_i S_{z}^{2}-\sum_{i} \mu_i \mathbf{H}\mathbf{S}_i
\end{equation}

A figure:
\begin{figure}[h!]
%\includegraphics[width=10cm]{fig1.eps}
\caption{My figure caption}
\label{Hyst}
\end{figure}

\begin{references}

\bibitem{Weller}D.Weller and A.Moser, IEEE Trans.Magn. \textbf{35}, 4423 (1999).
\end{references}

\end{document}

