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Zhores Alferov

Zhores Alferov 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 Zhores Alferov rather than just read about it. In short: Zhores Ivanovich Alferov (15 March 1930 – 1 March 2019) was a Russian applied physicist who contributed significantly to the creation of modern heterostructure physics and electronics. In 2000, Alferov shared the Nobel Prize in Physics for the development of the semiconductor heterojunction for optoelectronics.

Zhores Alferov — main illustration
Zhores Alferov — illustration

Key takeaways

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  • Reproduce the core statement of Zhores Alferov from memory before moving on to harder problems.

Reference excerpt

Zhores Ivanovich Alferov (15 March 1930 – 1 March 2019) was a Russian applied physicist who contributed significantly to the creation of modern heterostructure physics and electronics. In 2000, Alferov shared the Nobel Prize in Physics for the development of the semiconductor heterojunction for optoelectronics. He also became a politician in his later life, serving in the State Duma as a member of the Communist Party from 1999.

Biography Zhores Ivanovich Alferov was born on 15 March 1930 in Vitebsk, Byelorussian SSR (now Belarus), the son of Ivan Karpovich Alferov and Anna Vladimirovna. In 1952, Alferov graduated from the Department of Electronics at V. I. Ulyanov Electrotechnical Institute (now Saint Petersburg Electrotechnical University). The following year, he joined the staff of the Ioffe Institute, becoming its director in 1987. He obtained his Candidate of Sciences in Technology in 1961, and his Doctor of Sciences in Physics and Mathematics in 1970, both from the Ioffe Institute. Alferov was elected a Corresponding Member of the Academy of Sciences of the Soviet Union in 1972, and a full member in 1979. In 1973, he was appointed to the Chair of Optoelectronics at the Electrotechnical Institute, and became Dean of the Faculty of Physics and Technology at the Kalinin Politechnical Institute (now Peter the Great St. Petersburg Polytechnic University) in 1988. From 1989, he was Vice-President of the Academy of Sciences and President of its Saint Petersburg Scientific Center.

Research Alferov worked with a group led by Vladimir Tuchkevich, who became director of the Ioffe Institute in 1967, on planar semiconductor amplifiers for use in radio receivers. These planar semiconductor amplifiers would be referred to as transistors in the present day. His contribution included work on germanium diodes for use as a rectifier. In the early 1960s, Alferov organized an effort at Ioffe Institute to develop semiconductor heterostructures. Heterojunction transistors enabled higher frequency use than their homojunction predecessors, and this capability plays a key role in modern mobile phone and satellite communications. Alferov and colleagues worked on GaAs and AlAs III-V heterojunctions. A particular focus was the use of heterojunctions to create semiconductor lasers capable of lasing at room temperature. In 1963, Alferov filed a patent application proposing double-heterostructure lasers; Herbert Kroemer independently filed a US patent several months later. In 1966, Alferov's lab created the first lasers based on heterostructures, although they did not lase continuously. Then in 1968, Alferov and coworkers produced the first continuous-wave semiconductor heterojunction laser operating at room temperature. This achievement came a month ahead of Izuo Hayashi and Morton B. Panish of Bell Labs also producing a continuous-wave room-temperature heterojunction laser. It was for this work that Alferov received the 2000 Nobel Prize in Physics together with Herbert Kroemer "for developing semiconductor heterostructures used in high-speed- and opto-electronics." In the 1960s and 1970s Alferov continued his work on the physics and technology of semiconductor heterostructures in his lab at the Ioffe Institute. His investigations of injection properties of semiconductors and his contributions to the development of lasers, solar cells, LEDs, and epitaxy processes led to the creation of modern heterojunction physics and electronics. The development of semiconductor heterojunctions revolutionized semiconductor design, and had a range of immediate commercial applications—including LEDs, barcode readers, and CDs. Hermann Grimmeiss of the Royal Swedish Academy of Sciences, which awards Nobel Prizes, said: "Without Alferov, it would not be possible to transfer all the information from satellites down to the Earth or to have so many telephone lines between cities." Alferov had an almost messianic conception of heterostructures, writing: "Many scientists have contributed to this remarkable progress, which not only determines in large measure the future prospects of solid state physics but in a certain sense affects the future of human society as well."

Scientific administration In 1987, Alferov became the fifth director of the Ioffe Institute. In 1989, Alferov gained the administrative position of chairman of the Leningrad Scientific Center, now referred to as the St. Petersburg Scientific Center. In the Leningrad region, this scientific center is an overarching organization comprising 70 institutions, organizations, enterprises, and scientific societies. Alferov worked to foster relationships between early educational institutions and scientific research institutions to train the next generation of scientists, citing Peter the Great's vision for the Russian Academy of Sciences to be organized with a scientific research core in close contact with a gymnasium (secondary school). In 1987, Alferov and colleagues at the Ioffe Institute established a secondary school in Saint Petersburg, the School of Physics and Technology, under the umbrella of the Ioffe charter. In 1997 Alferov founded the Research and Education Center at the Ioffe Institute and in 2002, this center officially became the Saint Petersburg Academic University after gaining a charter to award masters and PhD degrees. In the 2000s, through his role in academic administration and in parliament, Alferov advocated for and worked to advance Russia's nanotechnology sector. The primary research charter of the Saint Petersburg Academic University, which Alferov founded, was the development of nanotechnology. Alferov provided a consistent voice in parliament in favor of increased scientific funding. In 2006, Prime Minister Mikhail Fradkov announced the creation of a federal agency, Rosnanotekh, to pursue nanotechnology applications.

Political career

Alferov was elected to the Russian Parliament, the State Duma, in 1995 as a deputy for the political party Our Home – Russia, generally considered to be supportive of the policies of President Boris Yeltsin. In 1999, he was elected again, this time on the list of the Communist Party of the Russian Federation. He was re-elected in 2003 and again in 2007, when he was placed second on the party's federal electoral list behind Gennady Zyuganov and ahead of Nikolai Kharitonov, even though he was not a member of the party.

Non-profit service Alferov served on the advisory council of CRDF Global.

… excerpt ends here. Continue reading the full article.

Illustrations

Zhores Alferov illustration
Zhores Alferov: Alferov meeting President Vladimir Putin at the Kremlin, 2000.
Alferov meeting President Vladimir Putin at the Kremlin, 2000.
Zhores Alferov: With Dmitry Medvedev, 15 March 2010
With Dmitry Medvedev, 15 March 2010

Worked examples

Example 1 — a first encounter with Zhores Alferov

Start with the simplest possible case. Write down what Zhores Alferov 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 Zhores Alferov 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 Zhores Alferov 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 Zhores Alferov

In research
Zhores Alferov 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 Zhores Alferov 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
Zhores Alferov is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1930 births, 2019 deaths, 21st-century Belarusian Jews, so understanding it makes those chapters shorter.
In everyday life
Look for Zhores Alferov 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 Zhores Alferov in 20 minutes

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

Frequently asked questions

What is Zhores Alferov in simple terms?

Zhores Ivanovich Alferov (15 March 1930 – 1 March 2019) was a Russian applied physicist who contributed significantly to the creation of modern heterostructure physics and electronics. In 2000, Alferov shared the Nobel Prize in Physics for the development of the semiconductor heterojunction for opt…

Why does Zhores Alferov 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 Zhores Alferov?

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 Zhores Alferov.

Tags

  • 1930 births
  • 2019 deaths
  • 21st-century Belarusian Jews
  • Belarusian Nobel laureates
  • Belarusian atheists
  • Belarusian inventors
  • Belarusian physicists
  • Belarusian secular Jews
  • Communist Party of the Russian Federation members
  • Communist Party of the Soviet Union members
  • Demidov Prize laureates
  • Fifth convocation members of the State Duma (Russian Federation)

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