期刊
PHYSICAL REVIEW B
卷 82, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.020514
关键词
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资金
- EPSRC (U.K.)
- French ANR DELICE
- EuroMagNET (EU) [RII3-CT-2004-506239]
- Canadian Institute for Advanced Research
- Canadian Research Chair
- EPSRC [EP/F038836/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F038836/1] Funding Source: researchfish
Pulsed field measurements of the Hall resistivity and magnetoresistance of underdoped YBa2Cu4O8 are analyzed self-consistently using a simple model based on coexisting electron and hole carriers. The resultant mobilities and Hall numbers are found to vary markedly with temperature. The conductivity of the hole carriers drops by one order of magnitude below 30 K, explaining the absence of quantum oscillations from these particular pockets. Meanwhile the Hall coefficient of the electron carriers becomes strongly negative below 50 K. The overall quality of the fits not only provides strong evidence for Fermi-surface reconstruction in Y-based cuprates, it also strongly constrains the type of reconstruction that might be occurring.
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