Nano-ARPES studies of novel transition metal dichalcogenides

寻求海外旅费赠款，以支付旅费，在今后六个月内利用巴黎SOLEIL同步加速器提供的高强度X射线束，对两种新的二维层状半导体材料（ReS 2和ReSe 2）进行第一次X射线实验。这种同步加速器是目前世界上独一无二的，它提供了高强度、可调谐的X射线波长和足够小的聚焦光斑，我们可以随意成像和靶向由单原子层或多层组成的样品区域，从而使我们能够发现半导体性能如何随着厚度从最终的2D极限增加到3D大块晶体行为而变化。这是巴斯小组的一种新型实验工作，但也是他们正在追求的一个非常令人兴奋的新研究方向的一部分，他们通过其他方法对ReS2和ReSe2的研究引起了人们的极大关注。

An Overseas Travel Grant is sought to cover travel costs to carry out the first X-ray experiments on two new two-dimensional layered semiconductor materials (ReS2 and ReSe2) over the next six months, using the high intensity X-ray beam available at the SOLEIL synchrotron, Paris. This synchrotron is unique world-wide at present in providing a high intensity, tunable X-ray wavelength, and a focused spot which is sufficiently small that we can image and target regions of of the sample consisting of single atomic layers or multiple layers at will, thus enabling us to find out how the semiconductor properties change as the thickness increases from the ultimate 2D limit up to the 3D bulk crystal behaviour. This is a new type of experimental work for the Bath group but is part of a very exciting new research direction that it is pursuing, and its studies of ReS2 and ReSe2 by other means have attracted significant attention.