Journal
PHYSICAL REVIEW B
Volume 83, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.073302
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Funding
- EPSRC (UK)
- UK-India Education and Research Initiative (UKIERI)
- Gates Cambridge Trust
- Engineering and Physical Sciences Research Council [EP/D008506/1] Funding Source: researchfish
- EPSRC [EP/D008506/1] Funding Source: UKRI
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We investigate the Nernst effect in a mesoscopic two-dimensional electron system (2DES) at low magnetic fields, before the onset of Landau level quantization. The overall magnitude of the Nernst signal agrees well with semiclassical predictions. We observe reproducible mesoscopic fluctuations in the signal that diminish significantly with an increase in temperature. We also show that the Nernst effect exhibits an anomalous component that is correlated with an oscillatory Hall effect. This behavior may be able to distinguish between different spin-correlated states in the 2DES.
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