Graphene: A Nearly Perfect Fluid
| Title | Graphene: A Nearly Perfect Fluid |
| Publication Type | Journal Article |
| Year of Publication | 2009 |
| Authors | Muller M, Schmalian J, Fritz L |
| Journal Title | Physical Review Letters |
| Volume | 103 |
| Pages | 025301 |
| Date Published | 07/01 |
| ISBN Number | 0031-9007 |
| Accession Number | ISI:000267887800032 |
| Keywords | critical-points, fermi-liquid behavior, gas, systems |
| Abstract | Hydrodynamics and collision-dominated transport are crucial to understand the slow dynamics of many correlated quantum liquids. The ratio eta/s of the shear viscosity eta to the entropy density s is uniquely suited to determine how strongly the excitations in a quantum fluid interact. We determine eta/s in clean undoped graphene using a quantum kinetic theory. As a result of the quantum criticality of this system the ratio is smaller than in many other correlated quantum liquids and, interestingly, comes close to a lower bound conjectured in the context of the quark gluon plasma. We discuss possible consequences of the low viscosity, including preturbulent current flow. |
| URL | <Go to ISI>://000267887800032 |
| DOI | 10.1103/Physrevlett.103.025301 |
