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Murakami Lab
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The lab theoretically explores material properties that arise from spin currents and geometric phases.
AboutAbout the lab
Explaining the flow of spin through theory.
Murakami Lab studies, from a theoretical standpoint, phenomena in which quantum mechanical effects appear as properties of a material as a whole.
The central topic is the physics of the flow of electron spin (spin current), which is also attracting attention for its applications in spintronics.
The spin Hall effect, in which a spin current arises perpendicular to an applied electric field, was confirmed in experiments after the lab's theoretical prediction.
By exploring principles shared by seemingly quite different things, such as electrons and light, the lab aims to predict new phenomena.
Key terms
- Spin current
- A flow in which the direction of spin, the small magnet-like property of an electron, is carried through a material
- Spintronics
- Electronics that uses not only the electric charge of electrons but also their spin
- Berry phase
- In quantum mechanics, a phase added to a wave when a state changes and returns to its original form, depending on the path it took. Also called the geometric phase
NewsLab news
Prof. Murakami received the 2024 Nishina Memorial Prize
A researcher from the lab received the Inoue Research Award for Young Scientists
A researcher received the Teshima Seiichi Memorial Research Award (Doctoral Dissertation Award)
A researcher from the lab received the Young Scientist Award of the Physical Society of Japan
A doctoral student received a Student Presentation Award at the 78th Annual Meeting of the Physical Society of Japan
ResearchResearch themes
The lab is interested in the full range of condensed matter phenomena in which quantum mechanical effects appear at the macroscopic scale, and studies them from a theoretical standpoint. In particular, it covers spin transport and the physics of spin currents broadly, and advances its research while also discussing it with experimental researchers.
*Illustrative imagePhysics of Spin Currents
The lab studies the physics of the flow of spin (spin current) broadly from the standpoint of fundamental theory. Research is active from the perspective of spintronics applications, but many problems remain to be solved.
*Illustrative imageSpin Hall Effect
This is a phenomenon in which applying an electric field from outside produces a spin current perpendicular to it. It was confirmed in experiments after the lab's theoretical prediction, and the lab studies its various properties.
*Illustrative imagePhenomena Caused by Geometric Phases
The spin Hall effect is a phenomenon caused by the geometric phase (Berry phase) of electrons. The lab also studies the distinctive properties of similar phenomena, the quantum Hall effect and the anomalous Hall effect.
*Illustrative imageSimilar Phenomena in Light
Phenomena caused by the Berry phase have also been predicted in other systems that have a phase, such as light, and the lab is pursuing this research as well. Based on principles shared by electrons and light, it aims to predict new phenomena.
MembersFaculty
Murakami Lab's members consist of faculty, postdocs, technical support staff, and doctoral, master's, and undergraduate students.As of 2024
- Program-Specific ProfessorShuichi Murakami
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: “Horseshoe Magnetic Filings (Flipped 180)” Noguarde / CC BY-SA 4.0 (cropped)
- Physics of Spin Currents: “Synchronized Nano-oscillators ( )” National Institute of Standards and Technology / Public domain (cropped)
- Spin Hall Effect: “SpinHallEffect” Eleanor Holmes / CC BY-SA 4.0 (cropped)
- Phenomena Caused by Geometric Phases: “QHE Filling Factors” Alexander Mayorov / CC BY-SA 3.0 (cropped)
- Similar Phenomena in Light: “Laser Interference” Wisky / CC BY-SA 3.0 (cropped)
- Related lab (于研究室): “Neel skyrmion coneplot” Forschungszentrum Jülich / CC BY 4.0 (cropped)
- Related lab (打田研究室): “Molecular Beam Epitaxy System” SJMW1987 / CC BY 4.0 (cropped)
- Related lab (平原研究室): “Graphite-layers-side-3D-balls” Benjah-bmm27 / Public domain (cropped)
- Related lab (佐藤研究室): “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
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