We study graphene nanoribbons (GNRs) with armchair edges in the presence of Rashba spin- orbit interactions (RSOI). We impose the boundary conditions on the tight binding Hamiltonians for bulk graphene with RSOI by means of a sine transform and study the influence of RSOI on the spectra and the...

Given budgetary and time constraints as well as climate concerns, researchers need to decide on which academic conferences to attend. As a basis for decision-making, we track the publication status of 6,805 research articles presented at 87 finance conferences between 2011 and 2015. We then rank...

This paper uses legal board size requirements to test whether board size affects firm performance and value. Since 1976, the minimum size of German firms’ supervisory boards increases from 12 to 16 directors at 10,000 domestic employees, resulting in a sharp increase in board sizes. Regression...

We propose a novel approach to measure the value that shareholders assign to financial flexibility. In contrast to existing proxies for financial constraints, our measure is market-based, forward-looking and not directly influenced by past financial decisions. We find that firms for which...