铋的电子不稳定性远远超过量子极限
An electronic instability in bismuth far beyond the quantum limit
摘要：
我们提出了一个半金属铋的传输研究中存在的磁场沿三角轴延伸到55 T的电导率和热电响应到45 T。结果揭示了一个新的领域规模在约40 T除了以前检测到的。所有输运性质的大异常都指向超量子机制深处的一种有趣的电子不稳定性。出乎意料的是，这两个绝对值的电导率和其金属的温度依赖性增强这种不稳定性。
英文摘要：
We present a transport study of semi-metallic bismuth in presence of a magnetic field applied along the trigonal axis extended to 55 T for electric conductivity and to 45 T for thermoelectric response. The results uncover a new field scale at about 40 T in addition to the previously detected ones. Large anomalies in all transport properties point to an intriguing electronic instability deep in the ultraquantum regime. Unexpectedly, both the sheer magnitude of conductivity and its metallic temperature dependence are enhanced by this instability.
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