Multi-resistance state tuned by interfacial active Pt layer in a perpendicular Hall balance

Jingyan Zhang, Pengwei Dou, Wenlin Peng, Yuan Zhuang, Jialong Liu, Amit Kohn, Eran Amsellem, Caiyin You, Jiaqiang Liu, Xinqi Zheng, Guanghua Yu, Yong Jiang, Shouguo Wang

Research output: Contribution to journalArticlepeer-review


The effect of interfacial Pt layer on multi-resistance states in perpendicular Hall balance with core structure of [Co/Pt]n/NiO/[Co/Pt]n multilayers was systematically investigated. By inserting an ultrathin Pt layer between [Co/Pt]n and NiO spacer, resistance states and the Hall resistance ratio (HRR) were successfully tuned. Our results indicate that the inserted ultrathin Pt layer plays a crucial role on spin dependent transport properties, achieving a HRR of up to 30,900%. Furthermore, the resistance in Hall balance can be smoothly altered among 2-, 3-, and 4-states by optimizing the ultrathin active Pt layer. Pt catalyst with high electronic activity, as measured by X-ray photoelectron spectroscopy (XPS), provides a novel approach for modifying the interfacial orbital hybridization, thus leading to a tunable resistance states and HRR value.

Original languageAmerican English
Article number146475
JournalApplied Surface Science
StatePublished - 15 Aug 2020


  • Hall balance
  • Hall resistance ratio
  • Interfacial hybridization
  • Perpendicular magnetic anisotropy

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • General Physics and Astronomy
  • Surfaces and Interfaces


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