A retraction with a complex and yet unclear narrative appears in the April 25, 2011 issue of Physics Letters A. According to the notice, for “Nuclear spin magnetic resonance force microscopy using slice modulation:”
This article has been retracted at the request of the Editors of Physics Letters A because there are unsettled issues on how the research was carried out, how the data were acquired and analyzed. The article was removed from the journal issue before printing although it appeared online. In addition, the article was accidentally published online twice in the same journal.
As the notice suggests, this was actually the second retraction, of the same paper. Here was the first, in 2008, shortly after the paper was published. And here is a removal notice, from later that year. We haven’t come across such an occurrence before, although we’ve been writing Retraction Watch for less than a year.
There are six editors of Physics Letters A, and we tried them all for comment on the “unsettled issues.” A few pointed to Burkhard Fricke, the communicating editor for the paper, who is no longer with the journal. He didn’t respond to requests for more information.
A few referred us to Karine van Wetering, a publisher at Elsevier: Continue reading Physics Letters A paper gets retracted twice, but the issues remain “unsettled”