Pseudopin transition of two-dimensional hole systems in hydraulic pressure
ORAL
Abstract
We preform transport measurement of high quality two-dimensional hole systems in a pressure cell at low temperatures. We find that the hydraulic pressure can induce phase transition to fractional quantum Hall effect near $\nu=3/2$. The discovered phenomenon is consistent with spin polarization transitions when the energy separation between the lowest two Landau levels is quenched by the large hydraulic pressure. Our finding reveal subtle dependence of spin degree of freedom on hydraulic pressure in hole systems.
*We acknowledge support from the National Key Research and Development Program of China (No. 2017YFA0303301), the National Natural Science Foundation of China (Grant No. 11674009 and No. 11921005), the National Basic Research Program of China (Grants No. 2015CB921101), the Beijing Natural Science Foundation (JQ18002), and the Key Research Program of the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB28000000) for measurements, the NSF (Grants No.DMR-1305691 , and No. MRSEC DMR-1420541), the Gordon and Betty Moore Foundation (Grant No. GBMF4420), and the Keck Foundation for the material growth and characterization.
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Presenters
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Yang Liu
- Peking Univ
- Peking University
- International Center for Quantum Materials, Peking University