Yakov Il'ich Frenkel, Russian: Яков Ильич Френкель (February 10, 1894, Rostov-on-Don – January 23, 1952, Leningrad, now known as St. Petersburg) was a Russian physicist renowned for his works in the field of solid-state physics. He is also known as Jacov Frenkel.He was born in a Jewish family in Rostov on Don on February 10, 1894. He entered St.

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  • Yakov Il'ich Frenkel, Russian: Яков Ильич Френкель (February 10, 1894, Rostov-on-Don – January 23, 1952, Leningrad, now known as St. Petersburg) was a Russian physicist renowned for his works in the field of solid-state physics. He is also known as Jacov Frenkel.He was born in a Jewish family in Rostov on Don on February 10, 1894. He entered St. Petersburg University in 1910. Frenkel graduated from the university in 3 years and remained there to prepare for a professorship. In 1912 he finished his first work in physics on the Earth Magnetism and atmospheric electricity. This work attracted Abram Ioffe's attention and later turned into collaboration. From 1921 till the end of his life, Frenkel worked at the Physico-Technical Institute. Beginning in 1922, Frenkel published a book virtually every year. He was the author of the first theoretical course in the USSR. Many students learned physics from these books, in the USSR and abroad. For his distinguished scientific service, he was elected a corresponding member of the USSR Academy of Sciences in 1929. He married Sara Isakovna Gordin in 1920. They had two sons, Sergei and Viktor . He served as a visiting professor in the University of Minnesota for a short period of time in around 1930. When conducting research on the molecular theory of condensed state, he introduced the notion of the hole. The Frenkel defect became firmly fixed in the physics of solids and liquids. In the 1930s, his research was supplemented with works on the theory of plastic deformation. His theory, now known as the Frenkel-Kontorova-Tomlinson model, is important in the study of dislocations. The results of his more than twenty years of study of the theory of liquid state were generalized in the classic monograph "Kinetic theory of liquids". In 1930-1931, Frenkel showed that neutral excitation of a crystal by light is possible, with an electron remaining bound to a hole created at a lattice site identified as a quasiparticle, the exciton. Mention should be made of Frenkel's works on the theory of metals, nuclear physics, and semiconductors.He contributed to semiconductor and insulator physics by proposing a theory, which is now commonly known as the Poole-Frenkel effect, in 1938. "Poole" refers to H. H. Poole (Horace Hewitt Poole, 1886-1962), Ireland. Poole reported experimental results on the conduction in insulators and found an empirical relationship between conductivity and electrical field. Frenkel later developed a microscopic model, similar to the Schottky effect, to explain Pooles results more accurately. His son, Victor Ya. Frenkel, wrote a biography for his father, "Yakov Ilich Frenkel: His work, life and letters". This book, originally written in Russian, has also been translated and published in English. (en)
  • Jakow Ilicz Frenkel, ros. Яков Ильич Френкель (ur. 10 lutego 1894 w Rostowie nad Donem, zm. 23 stycznia 1952 w Sankt Petersburgu) - rosyjski fizyk, znany ze swoich prac z dziedziny fizyki ciała stałego. (pl)
  • Я́ков Ильи́ч Фре́нкель (1894, Ростов-на-Дону — 23 января 1952, Ленинград) — советский учёный, атомный физик. Категория:Физики России Категория:Физики СССР Категория:Персоналии по алфавиту Категория:Родившиеся в 1894 году Категория:Родившиеся в Ростове-на-Дону Категория:Умершие 23 января Категория:Умершие в 1952 году (ru)
  • Jakow Iljitsch Frenkel (russisch Яков Ильич Френкель; * 28. January/ 9. February 1894 in Rostow am Don; † 23. Januar 1952, St. Petersburg) war ein bekannter russischer Physiker. Frenkel wurde in Rostow am Don als erstes Kind von Rosaliya Abramovna Batkina und Ilya Abramovich Frenkel geboren. Nach Abschluss der Schulausbildung mit Auszeichnung begann er 1913 ein Studium der Physik und Mathematik in St. Petersburg, dass er 1916 abschloss. Im Dezember 1920 heiratete er Sarra Isaakovna Gordina auf der Krim, wo er als Dozent tätig war. 1925 bereiste er Europa. Frenkel verfasste zahlreiche Bücher in mehreren Bereichen der Physik und war seit 1929 Mitglied der sowjetischen Akademie der Wissenschaften. Am bekanntesten sind seine Beiträge zur Festkörperphysik. Nach ihm sind der Frenkel-Defekt und das Frenkel-Exziton benannt. (de)
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  • Yakov Il'ich Frenkel, Russian: Яков Ильич Френкель (February 10, 1894, Rostov-on-Don – January 23, 1952, Leningrad, now known as St. Petersburg) was a Russian physicist renowned for his works in the field of solid-state physics. He is also known as Jacov Frenkel.He was born in a Jewish family in Rostov on Don on February 10, 1894. He entered St. (en)
  • Jakow Ilicz Frenkel, ros. Яков Ильич Френкель (ur. 10 lutego 1894 w Rostowie nad Donem, zm. (pl)
  • Я́ков Ильи́ч Фре́нкель (1894, � остов-на-Дону — 23 января 1952, Ленинград) — советский учёный, атомный физик. (ru)
  • Jakow Iljitsch Frenkel (russisch Яков Ильич Френкель; * 28. January/ 9. February 1894 in Rostow am Don; † 23. Januar 1952, St. Petersburg) war ein bekannter russischer Physiker. (de)
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  • Yakov Frenkel (en)
  • Jakow Frenkel (pl)
  • Френкель, Яков Ильич (ru)
  • Jakow Iljitsch Frenkel (de)
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