AI 中文总结
受扭曲MoTe2实验启发，研究掺杂σxy = 2e²/3h态获得的金属相，提出Z3正交金属概念，构建两种U(3)对称的Z3正交金属，表明其有大电阻率，电荷-1/3费米子配对产生超导体，还讨论了相关实验特征。
AI 中文摘要
当分数量子反常霍尔（FQAH）态被掺杂时，可自然产生移动任意子流体。受近期对扭曲MoTe2实验的启发，我们研究了通过掺杂σxy = 2e²/3h态获得的金属相。我们提出，在该FQAH态附近观察到的高电阻金属是一种Z3正交金属：一种非费米液体，具有与离散Z3规范场耦合的尖锐电荷1/3费米子准粒子，但没有尖锐的电子准粒子。对于具有π/3统计的三种电荷-1/3任意子的稀气体，我们构建了两种U(3)对称的Z3正交金属，其区别在于无隙费米子是作为SU(3)三重态还是单重态变换。我们表明，即使分数化准粒子处于良好的金属状态，这些态也自然会产生大的电阻率。电荷-1/3费米子的配对产生普通的电荷-2e超导体，平滑连接到BCS态，但通过本征分数化的正常态获得。我们讨论了轻掺杂2/3态中正常金属态可能具有分数化电荷载流子这一观点的实验特征。
英文摘要
A fluid of mobile anyons may arise naturally when a Fractional Quantum Anomalous Hall (FQAH) state is doped. Motivated by recent experiments on twisted $MoTe_2$, we study metallic phases obtained by doping the $σ_{xy} = 2e^2/3h$ state. We propose that the high-resistivity metal observed adjacent to this FQAH state is a $Z_3$ Orthogonal Metal: a non-Fermi liquid with sharp charge $1/3$ fermionic quasiparticles coupled to a discrete $Z_3$ gauge field but with no sharp electronic quasiparticle. For a dilute gas of three species of charge-$1/3$ anyons with $π/3$ statistics, we construct two $U(3)$ symmetric $Z_3$ Orthogonal Metals, distinguished by whether the gapless fermions transform as $SU(3)$ triplets or singlets. We show that these states naturally yield large electrical resistivities even when the fractionalized quasiparticles are in a good metallic regime. Pairing of the charge-$1/3$ fermions produces an ordinary charge-$2e$ superconductor, smoothly connected to a BCS state but obtained through an intrinsically fractionalized normal state. We discuss experimental signatures of the idea that the normal metallic state in the lightly doped $2/3$ state may have fractionalized charge carriers.
Comments17 pages (single column) + Appendices
