Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151392
Title: Bipolar conduction and giant positive magnetoresistance in doped metallic titanium oxide heterostructures
Authors: Huang, Ke
Wang, Tao
Jin, Mengjia
Wu, Liang
Wang, Floria Junyao
Li, Shengyao
Qi, Dong-Chen
Cheng, Shuying
Li, Yangyang
Chen, Jingsheng
He, Xiaozhong
Li, Changjian
Pennycook, Stephen J.
Wang, Renshaw Xiao
Keywords: Engineering::Materials
Issue Date: 2021
Source: Huang, K., Wang, T., Jin, M., Wu, L., Wang, F. J., Li, S., Qi, D., Cheng, S., Li, Y., Chen, J., He, X., Li, C., Pennycook, S. J. & Wang, R. X. (2021). Bipolar conduction and giant positive magnetoresistance in doped metallic titanium oxide heterostructures. Advanced Materials Interfaces, 8(9), 2002147-. https://dx.doi.org/10.1002/admi.202002147
Journal: Advanced Materials Interfaces
Abstract: Empowering conventional materials with unexpected magnetoelectric properties is appealing to the multi-functionalization of existing devices and the exploration of future electronics. Recently, owing to its unique effect in modulating a matter's properties, ultra-small dopants, for example, H, D, and Li, attract enormous attention in creating emergent functionalities, such as superconductivity, and metal–insulator transition. Here, an observation of bipolar conduction accompanied by a giant positive magnetoresistance in D-doped metallic Ti oxide (TiOxDy) films is reported. To overcome the challenges in intercalating the D into a crystalline oxide, a series of TiOxDy is formed by sequentially doping Ti with D and surface/interface oxidation. Intriguingly, while the electron mobility of the TiOxDy increases by an order of magnitude larger after doping, the emergent holes also exhibit high mobility. Moreover, the bipolar conduction induces a giant magnetoresistance up to 900% at 6 T, which is ≈6 times higher than its conventional phase. This study paves a way to empower conventional materials in existing electronics and induce novel electronic phases.
URI: https://hdl.handle.net/10356/151392
ISSN: 2196-7350
DOI: 10.1002/admi.202002147
Rights: This is the peer reviewed version of the following article: Huang, K., Wang, T., Jin, M., Wu, L., Wang, F. J., Li, S., Qi, D., Cheng, S., Li, Y., Chen, J., He, X., Li, C., Pennycook, S. J. & Wang, R. X. (2021). Bipolar conduction and giant positive magnetoresistance in doped metallic titanium oxide heterostructures. Advanced Materials Interfaces, 8(9), 2002147-. https://dx.doi.org/10.1002/admi.202002147, which has been published in final form at https://doi.org/10.1002/admi.202002147. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20220507
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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