arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0904.0233cond-mat.str-elcond-mat.mtrl-sci
收藏

BaVS3中电子关联与晶格不稳定性的相互作用

Interplay of electronic correlations and lattice instabilities in BaVS3

Kwang-Yong Choi, Dirk Wulferding, Helmuth Berger, Peter Lemmens

摘要:

具有金属-绝缘体相变的准一维金属系统BaVS 3在T_MI=70 K时表现出光学声子谱、中心峰和电子拉曼散射连续谱的三步变化过程。出于观察到的强烈波动的前体状态在高温和轨道有序和在低温下的电荷间隙,我们建议的轨道,电子和晶格子系统的电子相关性为主的协调行动。

英文摘要:

The quasi-one-dimensional metallic system BaVS3 with a metal-insulator transition at T_MI=70 K shows large changes of the optical phonon spectrum, a central peak, and an electronic Raman scattering continuum that evolve in a three-step process. Motivated by the observation of a strongly fluctuating precursor state at high temperatures and orbital ordering and a charge gap at low temperatures we suggest a concerted action of the orbital, electronic, and lattice subsystems dominated by electronic correlations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑