arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.1617cond-mat.supr-con
收藏

超导FeSe0. 4Te_(0.6)的三重共振

A Triplet Resonance in Superconducting FeSe0.4Te0.6

Wei Bao, A. T. Savici, G. E. Granroth, C. Broholm, K. Habicht, Y. Qiu, Jin Hu, Tijiang Liu, Z. Q. Mao

摘要:

从重费米子到铜酸盐和铁磷属元素化物,自旋共振是近磁性超导体的主要特征。可能的解释包括两粒子束缚态或超导体中的磁振子阻尼损失。虽然这两种情况都表明了磁涨落的核心作用,但区分它们对于确定正确的理论框架并指导寻找更高温度的超导体非常重要。利用非弹性中子散射技术,我们发现在高磁场中,最佳掺杂的Fe(Se,Te)的自旋共振分裂成三个峰,这是两粒子三重态束缚态的特征

英文摘要:

From heavy fermions to cuprates and iron pnictides, a spin resonance is a staple of nearly magnetic superconductors. Possible explanations include a two-particle bound state or loss of magnon damping in the superconductor. While both scenarios suggest a central role for magnetic fluctuations, distinguishing them is important to identify the right theoretical framework and to guide the search for higher temperature superconductors. Using inelastic neutron scattering technique, we show that the spin resonance in optimally doped Fe(Se,Te) splits into three peaks in a high magnetic field, a signature of a two-particle triplet bound state

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。

↑