Сообщения со словом
«optical»

11. 28.11.2007, 15:11. mrach в теме
    «[University of Exeter (UK)] PhD studentship (PHYSICS)»
    ... opposite sides of the sample in our case due to the optically created polarisation of the hole spins a hall voltage can be measured in the absence of a magnetic field on passing a current across the sample we would like to investigate this effect further in a number of different samples whilst varying the experimental conditions ii the effects of controllable disorder on a two-dimensional electron system the physics of two-dimensional electron systems 2dess has always been influenced by the residual disorder in the sample understanding disorder is one of the central problems of condensed matter physics we have invented a new method to create controllable artificial disorder in 2dess as it is based on patterned laser light irradiation it can be varied without changing the sample so the effect of disorder can be separated from all other properties this opens a whole new field of study into effect of controllable disorder on the physics of 2dess there are a large number of possible future experiments using this technique which we wish to pursue iii optical investigations of graphene graphene a single...