Ampersand, bibtex

Question

I used to use

{\rm \&}

for ampersands in the bibliography, but it is deprecated, and leads to an error with scrbook document class.

If I remove the "\rm" it looks like this:

But what I want is this

but actually better in italic.

Answer 1

The italic version of the ampersand in Computer Modern just looks like the first picture you posted. But you could use the slanted version of it:

\documentclass{article}
\begin{document}

\&               % or {\upshape \&}
{\itshape \&}
{\slshape \&}

\end{document}

---

Edit

If you want to change the appearance of & in the whole document to it’s non-italic version, you could make use of this answer. For example as follows:

\documentclass{article}

\makeatletter
\DeclareRobustCommand*{\&}{%
  \nfss@text{%
    \upshape\symbol{`\&}%
  }%
}
\makeatother

\begin{document}

\textit{one \& two}

\textbf{one \& two}

\texttt{one \& two}

\end{document}

This way, the & will always be non-italic, but bold face or changing to another font will still work. However, take care that this may lead to bad kerning (especially between the non-italic & and an italic letter that follows) and, of course, it prevents you from entering an italic &. Also, it is possible that this breaks due to incompatibilities in certain situations.