论文标题
在最大无序的浓缩固体中涂抹的极端费米表面
Extreme Fermi surface smearing in a maximally disordered concentrated solid solution
论文作者
论文摘要
我们表明，费米表面可以在均值合金Ni $ _ {0.25} $ fe $ _ {0.25} $ co $ _ {0.25} $ cr $ _ {0.25} $中生存。我们的高分辨率康普顿散射实验揭示了一个费米表面，该表面在布里渊区的很大一部分（$ \ frac {2π} {a} $中的40 \％）上。已经确定了这种涂抹的范围及其在费米表面的不同表之间和之间的变化，并且通过将这种涂片与准粒子状态的相干长度连接起来，对电子均值路径和残留电阻率进行了估计。
We show that the Fermi surface can survive the presence of extreme compositional disorder in the equiatomic alloy Ni$_{0.25}$Fe$_{0.25}$Co$_{0.25}$Cr$_{0.25}$. Our high-resolution Compton scattering experiments reveal a Fermi surface which is smeared across a significant fraction of the Brillouin zone (up to 40\% of $\frac{2π}{a}$). The extent of this smearing and its variation on and between different sheets of the Fermi surface has been determined, and estimates of the electron mean-free-path and residual resistivity have been made by connecting this smearing with the coherence length of the quasiparticle states.
