Keyu Pi

Title: Keyu Pi: Innovator in Spintronics

Introduction

Keyu Pi is a prominent inventor based in San Jose, CA, known for his contributions to the field of spintronics. He holds a total of 6 patents, showcasing his innovative approaches to technology and engineering.

Latest Patents

One of his latest patents is titled "Method for forming a perpendicular spin torque oscillator (PSTO) including forming a magneto resistive sensor (MR) over a spin torque oscillator (STO)." This patent describes a method of forming a magnetic tunnel junction (MTJ) with a tunnel barrier that has a high tunneling magnetoresistance ratio and a low resistance x area value. The method preserves perpendicular magnetic anisotropy in the magnetic layers adjacent to the tunnel barrier. A key feature of this invention is a passive oxidation step of a first magnesium layer, which protects the bottom magnetic layer from substantial oxidation during subsequent processes.

Another significant patent is "Physical cleaning with in-situ dielectric encapsulation layer for spintronic device application." This patent outlines a method for etching an MTJ structure, where a stack of MTJ layers is provided on a bottom electrode. The process includes oxidizing the sidewalls of the MTJ structure and physically cleaning it to remove damaged portions before depositing an encapsulation layer.

Career Highlights

Keyu Pi has worked with notable companies such as Headway Technologies, Incorporated and Taiwan Semiconductor Manufacturing Company. His experience in these organizations has contributed to his expertise in the field of spintronics and semiconductor technology.

Collaborations

Throughout his career, Keyu has collaborated with talented individuals, including Ru-Ying Tong and Yu-Jen Wang, who have contributed to his research and development efforts.

Conclusion

Keyu Pi's innovative work in spintronics and his impressive portfolio of patents highlight his significant contributions to technology. His advancements in the field continue to influence the development of new technologies and applications.