ENDOR and Optical Studies of Fractional S=1/2 Spins in S=1 Antiferromagnetic Linear Chains

这个SGER项目将使用电子核双共振(Endor)和光学技术来研究一维线性磁链中的新磁性行为。通过在链中掺杂抗磁性物质，在链中产生磁共振离子。这种S=1/2物种在链上的几个金属位置上以一种未知的方式被离域。这种非定域化将通过Endor技术进行探测。这些结果将对研究低维磁性材料的理论家感兴趣，低维磁性材料是目前凝聚态物理中相当感兴趣的一个领域。光学技术将被用来试图通过激发局部抗磁金属离子构型来破坏链。

This SGER project will use electron nuclear double resonance (ENDOR) and optical techniques to investigate novel magnetic behavior in one-dimension linear magnetic chains. A magnetic resonant ion is created in the chains by doping the chains with diamagnetic species. This S=1/2 species is delocalized in an unknown fashion over several metal sites in the chain. This delocalization will be probed by the ENDOR technique. The reslts will be of interest to theoreticians studying low-dimensional magnetic materials, an area of considerable current interest in condensed matter physics. Optical techniques will be used to try to disrupt the chains via excitation of a local diamagnetic metal ion configuration.