Researchers are often asked to write references or recommendation letters. Nature asked three senior scientists what they do when they can’t endorse someone. I’m a neuroscientist in the United States.

Abstract: In order to reduce the energy dissipation in main memory of computer systems, phase change memory (PCM) has emerged as one of the most promising technologies to incorporate into the memory ...

Abstract: Phase change memory (PCM) has emerged as one of the most promising technologies to incorporate into the memory hierarchy of future computer systems. However, PCM has two critical weaknesses ...