The h index and multi-author h_m index for individual researchers in condensed matter physics
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The characteristics of the h index in the field of condensed matter physics are studied using high-quality data from ResearcherID. The results are examined in terms of theoretical descriptions of the h index' overall dependence on a researcher's total number of published papers, and total number of citations. In particular, the models by Hirsch, Egghe and Rousseau, as well as by Glänzel and Schubert are examined. Special emphasis is placed on the deviations from such statistical descriptions, and it is argued that the deviation of a particular researcher's h value from the Egghe-Rouseau model's prediction can be used as a supplementary measure of impact. A corresponding analysis with similar results is performed using the multi-author h_m index.
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