physics

Hideo Ohno

Hideo Ohno is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hideo Ohno rather than just read about it. In short: Hideo Ohno (Japanese: 大野英男; Hideo Ōno; born 18 December 1954, Tokyo) is a Japanese physicist. He is the 22nd president of Tohoku University, succeeding Susumu Satomi in April 2018.

Key takeaways

Hideo Ohno belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Hideo Ohno to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Hideo Ohno from memory before moving on to harder problems.

Reference excerpt

Hideo Ohno (Japanese: 大野英男; Hideo Ōno; born 18 December 1954, Tokyo) is a Japanese physicist. He is the 22nd president of Tohoku University, succeeding Susumu Satomi in April 2018.

Biography Ohno received B.S., M.S. and Ph.D. degrees from the University of Tokyo in 1977, 1979 and 1982. He spent one year as a visiting graduate student at Cornell University in 1979. He was a lecturer at the School of Engineering at Hokkaido University from 1982 to 1983, and an associate professor from 1983 to 1994. He was a visiting scientist at IBM T. J. Watson Research Center from 1988 to 1990. In 1994 Ohno was appointed a professor at Tohoku University and a professor at the Research Institute of Electrical Communication (RIEC) from 1995. In 2004 he became the head of the laboratory of Nanoelectronics and Spintronics at Tohoku University. From 2010 until March 2018, Ohno served as the director of the Center for Spintronics Integrated Systems. He was tipped as a possible candidate to receive a Nobel Prize in 2011, for his work in spintronics. Ohno later in 2021 became an international fellow at the Royal Swedish Academy of Engineering Sciences (IVA).

Awards 1998 - IBM Japan Science Award 2005 - Japan Academy Prize, jointly with Hiroyuki Sakaki for "Studies on Quantum Control of Electrons by Semiconductor Nanostructures and Ferromagnetism" 2005 - EPS Europhysics Prize, jointly with David Awschalom and Tomasz Dietl, for their work on ferromagnetic semiconductors and spintronics 2011 - Thomson Reuters Citation Laureate 2012 - JSAP Outstanding Achievement Award 2012 - IEEE David Sarnoff Award, in recognition of his leadership and contribution in the electronics division of the Institute of Electrical and Electronics Engineers (IEEE) 2016 - Asian Scientist 100, Asian Scientist 2018 - Clarivate Citation Laureate 2023 - Doctor Honoris Causa from the University of Warsaw

Selected publications Ikeda, S.; Miura, K.; Yamamoto, H.; Mizunuma, K.; Gan, H. D.; Endo, M.; Kanai, S.; Hayakawa, J.; Matsukura, F.; Ohno, H. (August 2010). "A perpendicular-anisotropy CoFeB–MgO magnetic tunnel junction". Nature Materials. 9 (9): 721–724. Bibcode:2010NatMa...9..721I. doi:10.1038/nmat2804. PMID 20622862. Ohno, H.; Chiba, D.; Matsukura, F.; Omiya, T.; Abe, E.; Dietl, T.; Ohno, Y.; Ohtani, K. (2000). "Electric-field control of ferromagnetism". Nature. 408 (6815): 944–946. Bibcode:2000Natur.408..944O. doi:10.1038/35050040. PMID 11140674. S2CID 4397543. Dietl, T.; Ohno, H.; Matsukura, F; et al. (2000). "Zener model description of ferromagnetism in zinc-blende magnetic semiconductors". Science. 287 (5455): 1019–1022. Bibcode:2000Sci...287.1019D. doi:10.1126/science.287.5455.1019. PMID 10669409. S2CID 19672003. Ohno, H. (1998). "Making nonmagnetic semiconductors ferromagnetic". Science. 281 (5379): 951–956. Bibcode:1998Sci...281..951O. doi:10.1126/science.281.5379.951. PMID 9703503.

References

Illustrations

Worked examples

Example 1 — a first encounter with Hideo Ohno

Start with the simplest possible case. Write down what Hideo Ohno claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hideo Ohno before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hideo Ohno ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hideo Ohno

In research: Hideo Ohno appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Hideo Ohno in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Hideo Ohno is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, Academic staff of Tohoku University, Fellows of the American Physical Society, so understanding it makes those chapters shorter.
In everyday life: Look for Hideo Ohno outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Hideo Ohno in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hideo Ohno means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Hideo Ohno out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hideo Ohno in simple terms?

Hideo Ohno (Japanese: 大野英男; Hideo Ōno; born 18 December 1954, Tokyo) is a Japanese physicist. He is the 22nd president of Tohoku University, succeeding Susumu Satomi in April 2018.

Why does Hideo Ohno matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hideo Ohno?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hideo Ohno.