论文标题
$ζ$ - 氧气压缩到Megabar压力的非常规超导性
Unconventional superconductivity in $ζ$-phase of oxygen compressed to megabar pressure
论文作者
论文摘要
氧表现出从非金属$ $ε$ -O2相变成金属$ζ$ -O2相的结构相变，在p = 96 GPA的压力下（Desgreniers等人，1990年J.Phys。Chem。941117; Akahama et al 1995Phys。Rev.lett。744690）。金属$ζ$ -O2相是一种超导体，在p = 115-120 GPA时TC = 0.6 k的过渡温度（Shimizu等人1998 Nature 393 767）。在本文中，我们对温度依赖的上临界场BC2（T），$ζ$ -O2相（P = 115 GPA）进行了分析，并表明这种气态分子元件的高压缩相位是非常规的超导体，TC与Fermi温度的比率是Fermi温度，TF，TF，TF，TF，范围为0.009 <tc/TC/TC/TF。
Oxygen exhibits structural phase transformation from non-metallic $ε$-O2 phase into metallic $ζ$-O2 phase at pressure of P = 96 GPa (Desgreniers et al 1990 J. Phys. Chem. 94 1117; Akahama et al 1995 Phys. Rev. Lett. 74 4690). Metallic $ζ$-O2 phase is a superconductor with transition temperature of Tc = 0.6 K at P = 115-120 GPa (Shimizu et al 1998 Nature 393 767). In this paper we have performed analysis of temperature dependent upper critical field, Bc2(T), for $ζ$-O2 phase (P = 115 GPa) and show that this highly-compressed phase of gaseous molecular element is unconventional superconductor with the ratio of Tc to the Fermi temperature, Tf, in the range of 0.009 < Tc/Tf < 0.108.
