ZnO quantum Hall states revealed by mesoscopic conduction

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H05425
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: The University of Tokyo
• Principal Investigator: Uchida Masaki 東京大学, 大学院工学系研究科(工学部), 助教 (50721726)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 表面・界面 / 量子伝導 / 量子ホール効果 / 二次元電子ガス / 高移動度 / 酸化亜鉛 / 酸化物薄膜

Outline of Final Research Achievements

We have improved molecular beam epitaxy growth of zinc-oxide two-dimensional electron gas for further enhancement of its mobility, and performed ultralow-temperature quantum transport measurements adopting mesoscopic conduction methods. Results of oscillation period change observed in various anti-dot structures suggest formation of the spin-polarized composite particles in the even-denominator fractional quantum Hall state.

Free Research Field

物性物理学