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Pham Lab
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The lab merges semiconductors and magnetic materials to create low-power spin devices.
AboutAbout the lab
Spin-based semiconductor materials and devices for artificial intelligence.
The Pham Lab studies materials and devices for spin-based semiconductors, which combine the features of semiconductors and magnetic materials.
Semiconductors operate quickly, while magnetic materials can store data without consuming power, so combining the two is expected to yield devices with extremely high energy efficiency.
The lab works on "spin device engineering," which spans materials engineering, solid-state physics, and device engineering.
The lab is conducting research on SOT-MRAM, a low-power next-generation memory that uses topological insulators, jointly with companies.
Key terms
- Spintronics
- Electronics that uses not only the electrical property of electrons but also their "spin," the origin of magnetism
- Ferromagnetic semiconductor
- A semiconductor in which some atoms are replaced with magnetic atoms, giving it magnet-like properties
- SOT-MRAM
- Next-generation memory that can be written at high speed using spin current and retains data even when the power is turned off
NewsLab news
Paper on the effect of interlayer DMI on domain wall velocity published in Nano Letters
Paper on the giant spin Hall effect in BiSb topological insulators published in APL
Paper on the optical constants of BiSb in the infrared region published in Optics Letters
A master's student received the Outstanding Master's Thesis Award for fiscal 2025
Paper on (In,Fe)Sb ferromagnetic semiconductors selected as a Featured Article in APL
ResearchResearch themes
The Pham Lab researches and develops new materials and device structures that solve the various challenges facing semiconductor spintronics. By combining semiconductor and magnetic-material technologies, the lab aims to contribute to a low-power society.
*Illustrative imageIron-Based Ferromagnetic Semiconductors
The lab studies next-generation ferromagnetic semiconductors based on iron (Fe) that overcome the problems of conventional manganese-based ones. n-type ferromagnetic semiconductors can also be made, and materials that operate at room temperature are expected.
*Illustrative imageSpin Diodes and Spin Transistors
The lab studies spin p-n diodes and spin transistors that use ferromagnetic semiconductor junctions. Their output can be changed by the direction of magnetization, so they can be applied to non-volatile magnetic memory and reconfigurable logic circuits.
*Illustrative imageMagnetic Nanoparticles and Single-Electron Transistors
The lab creates MnAs ferromagnetic nanoparticles inside the semiconductor GaAs and investigates how electric current flows through them via spin. It is also fabricating "single-electron spin transistors," which pass electrons one at a time.
MembersFaculty
The members of the Pham Lab consist of faculty members, commissioned researchers, doctoral, master's, and undergraduate students, and master's internship students.As of 2026
- ProfessorPham Nam HaiPublications ↗
- Assistant ProfessorHuy Ho HoangPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Hard disk head on platter” Mfield, Matthew Field / CC BY-SA 3.0 (cropped)
- Iron-Based Ferromagnetic Semiconductors: “Gallium Arsenide (GaAs) 2" wafer” La2O3 / CC BY-SA 3.0 (cropped)
- Spin Diodes and Spin Transistors: “NIKO-SEM P07D03LVG Dual N-Channel Enhancement Mode Field Effect Transistor ( )” Cole L / CC BY-SA 2.0 (cropped)
- Magnetic Nanoparticles and Single-Electron Transistors: “TEM-image-of-Fe3O4-nanoparticles” Zhang Shu, Shulin Wang / CC BY 4.0 (cropped)
- Related lab (飯野研究室): “Nematic liquid crystal” Ingo Dierking / CC BY-SA 4.0 (cropped)
- Related lab (藤田・佐野研究室): “J-POWER SAKUMA frequency converter station” Jihara19 / CC BY-SA 4.0 (cropped)
- Related lab (宮本智之研究室): “Fluorescence in calcite” Jan Pavelka / CC BY-SA 4.0 (cropped)
- Related lab (西山研究室): “Laser diode chip” NASA
（PD NASA。 作者欄なし） / Public domain (cropped)
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