physics

Oktyabrʹ Emelʹyanenko

Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko rather than just read about it. In short: Octyabrʹ V. Emelʹyanenko (7 November 1926, Leningrad - 27 May 2012, Saint Petersburg) was a Soviet physicist, Ph.D. in Physics and Mathematical Sciences.

Key takeaways

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Reference excerpt

Octyabrʹ V. Emelʹyanenko (7 November 1926, Leningrad - 27 May 2012, Saint Petersburg) was a Soviet physicist, Ph.D. in Physics and Mathematical Sciences. He did fundamental work in physics of III-V compound semiconductors, and made significant contributions to pave the way for the creation of the first semiconductor laser, optoelectronics, LEDs, solar cells, infrared detectors and other semiconductor devices.

Biography In 1945 he was called up for military service at the age of seventeen. Location Service - Eastern Front. After the Second World War was to re-enlist. While serving in the army in absentia received secondary and higher education. He graduated from the Physics Faculty of Saint Petersburg State University, enrolled in graduate school. From 1955 to 1989 he worked in the Laboratory of Semiconductor Nasledov D.(Ioffe Physical-Technical Institute of the Russian Academy of Sciences)

Scientific work Studies of III–V compounds in the Soviet Union were started in the early 1950s at the Physical-Technical Institute, USSR Academy of Sciences. In 1950, N. Goryunovа and A. Regel opened their semiconducting properties of III-V compounds on the example of indium antimonide In the 1950s only the laboratory of Professor Heinrich Welker in Germany, and laboratory Dmitriy N. Nasledov in the Ioffe Physical-Technical Institute, USSR Academy of Sciences were engaged in studies of III–V compounds. All scientists in the field of semiconductors concentrated almost exclusively on germanium and silicon. It seemed that these elemental semiconductors, which brought electronics to a new level, could not be surpassed by any compound semiconductor. The first significant report on studies of III–V semi-conductors (InSb, InAs) at the Physical-Technical Institute was made by Nasledov at the First All-Union Conference on Semiconductors (Leningrad, 1956). He mentioned (among other phenomena) that neither electrical conductivity nor the Hall effect depend on temperature in new III–V compounds. Many scientists considered this observation strange and even accidental. However, it was found shortly afterwards that the above temperature independence is the consequence of profound degeneracy in the electron gas, which is typical of heavily doped (then, simply “impure”) III–V crystals. Fundamentally new phenomena in these crystals gave rise to a new field in the physics of semiconductors, specifically, the physics of heavily doped semiconductors. This researches was conducted group headed by O. Emelianenko in the laboratory D. Nasledov A team led by O. Emelianenko continued fundamental research of phenomena transport in a wide class of III-V compounds (solid solutions and structures). The most interesting were: the study of the impurity band; Later, discovery of giant magnetoresistance when driving vehicles on impurities; the investigation of the metal–semiconductor transition in various materials compounds III–V, as well as the determination of the origin of negative (quantum) magnetoresistance (discovered by a team Emelianenko even earlier, in 1958). The results obtained by O. Emelianenko and his team are included in the modern understanding of semiconducting properties of compounds III-V.

References

Links https://books.google.com/books?id=r-WzXVaKctIC&dq=GaAs++Nasledov+Emel%E2%80%99yanenko&pg=PA468 http://dn.nasledov.com/nasledov.pdf http://library.eltech.ru/cgi-bin/irbis64r_11/cgiirbis_64.exe?LNG=&P21DBN=GK&I21DBN=GK_PRINT&S21FMT=fullw_print&C21COM=F&Z21MFN=27457 http://www.dissercat.com/content/osobennosti-rezistivnykh-i-galvanomagnitnykh-yavlenii-v-anizotropnykh-poluprovodnikakh http://www.issp.ac.ru/ebooks/disser/Sergeev_G_S.pdf http://www.dissercat.com/content/vliyanie-neravnovesnykh-sostoyanii-medi-na-fotoprovodimost-fosfida-galliya http://www.dissercat.com/content/vliyanie-elektricheskogo-polya-na-magnitosoprotivlenie-germaniya-i-armenida-galliya

Worked examples

Example 1 — a first encounter with Oktyabrʹ Emelʹyanenko

Start with the simplest possible case. Write down what Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko

In research: Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko 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: Oktyabrʹ Emelʹyanenko is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1926 births, 2012 deaths, 20th-century Russian scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Oktyabrʹ Emelʹyanenko in simple terms?

Octyabrʹ V. Emelʹyanenko (7 November 1926, Leningrad - 27 May 2012, Saint Petersburg) was a Soviet physicist, Ph.D. in Physics and Mathematical Sciences.

Why does Oktyabrʹ Emelʹyanenko 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 Oktyabrʹ Emelʹyanenko?

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 Oktyabrʹ Emelʹyanenko.