AI 中文总结
研究磁阻正交缩放争议，通过研究NiTe2纳米片等，表明其非奇异金属性唯一标志，仅在交叉场足够小时成立，线性磁阻主导时缩放出现，结果提醒用此缩放探索奇异金属态需谨慎。
AI 中文摘要
磁阻的正交缩放已被广泛用作奇异金属态的标志。然而，这种缩放是信号量子临界性还是反映传统输运行为仍存在争议。在此，通过系统研究NiTe2纳米片的磁输运特性，我们证明正交缩放不是奇异金属性的唯一标志。我们发现，只有当标志从二次磁阻到线性磁阻转变的交叉场相对于外加场范围足够小时，缩放才成立。通过可控模拟，我们表明，无论其起源如何，只要线性磁阻占主导，缩放就会出现，而当线性区域无法达到时，缩放就会失效。在基于SrTiO3的异质结构中的观察结果支持了这一结论，其中尽管没有奇异金属行为，但仍出现了正交缩放。我们的结果表明，正交缩放仅反映了线性磁阻的存在，这促使在使用这种缩放作为探索奇异金属态的诊断工具时要谨慎。
英文摘要
The quadrature scaling of magnetoresistance has been widely adopted as a hallmark of the strange metal state. However, whether this scaling signals quantum criticality or reflects conventional transport behavior remains controversial. Here, by systematically investigating the magnetotransport properties of NiTe2 nanosheets, we demonstrate that the quadrature scaling is not a unique signature of strange metallicity. We find that the scaling holds only when the crossover field , marking the transition from quadratic to linear magnetoresistance, is sufficiently small relative to the applied field range. Through controlled simulations, we show that the scaling emerges whenever linear magnetoresistance dominates, irrespective of its origin, and fails when the linear regime is inaccessible. This conclusion is supported by observations in SrTiO3 based heterostructures, where quadrature scaling appears despite the absence of strange metal behavior. Our results establish that the quadrature scaling merely reflects the presence of linear magneto resistance, urging caution in using this scaling as a diagnostic tool for exploring the strange metal state.
Comments21 pages,5 figures
