Graphene is an emergent research topic that has attracted a huge amount of research interest ever since its experimental demonstration as a two-dimensional realization of Dirac fermions in 2005. In subsequent years, the research on graphene has rapidly expanded its field not only due to the new paradigm to study relativistic high energy physics in a condensed matter, but also due to its potential in the application for next generation devices. Most of the novel phenomena observed so far in graphene are attributed to its low-energy excitations, which is described by those of relativistic Dirac fermions. This article reviews recent progress in angle-resolved photoemission spectroscopy studies on electron-electron interactions in graphene.

自2005年以二维实现狄拉克费米子的实验演示以来，石墨烯是一个新兴的研究主题，引起了巨大的研究兴趣。在随后的几年中，石墨烯的研究迅速扩展了其领域，这不仅是由于石墨烯的发展。在凝聚态中研究相对论性高能物理的新范式，也归因于其在下一代设备中的应用潜力。迄今为止，在石墨烯中观察到的大多数新颖现象均归因于其低能激发，这是相对论狄拉克费米子所描述的。本文回顾了角分辨光发射光谱研究石墨烯中电子与电子相互作用的最新进展。