Boris Kochelaev Explained

Boris Kochelaev
Birth Name:	Boris Ivanovich Kochelaev
Birth Date:	19 April 1934
Birth Place:	Dirizhablestroy, Moscow Oblast, Soviet Union
Nationality:	Russian
Fields:	Physics
Workplaces:	Kazan Federal University
Alma Mater:	Kazan Federal University
Doctoral Advisor:	Semen Altshuler
Awards:	Order of the Red Banner of Labour (1976) Order of Honour (2005)

Boris Ivanovich Kochelaev (Russian: Бори́с Ива́нович Кочела́ев; born April 19, 1934) is a Soviet and Russian physicist and professor.

Biography

Kochelaev was born in Dirizhablestroy (now Dolgoprudny), USSR. He graduated from the Physics and Mathematics Faculty of the Kazan University in 1957. From 1957 to 1960, Kochelaev was a post-graduate student of the Experimental and Theoretical Physics Department of Kazan University under the supervision of Semen Altshuler. He defended his candidate's (Ph.D.) dissertation in 1960 at Kharkov State University and his doctor's dissertation in 1968. From 1968 until now, Boris Kochelaev has been a professor, and from 1973 to 2000, he was chair of Kazan University's Theoretical Physics Department.

He is the author of more than 150 scientific works. 33 PhD-level scientists were supervised by Kochelaev, 10 of them have obtained doctoral degrees and become full professors.

Research

The research interests are focused on electron spin resonance and spin dynamics in condensed matter, superconductivity, propagation of sound in resonant media, and light scattering in solids.

Major research achievements:

• The development of spin-phonon interactions in paramagnetic crystals:^{[1] [2]}
• The non-linear theory of kinetic processes in paramagnetic crystals explained the experimentally observed phonon avalanche and super-scattering of light under saturation on the wing of the EPR line^{[3] [4]}
• The prediction of the discovered later effect of non-resonant sound absorption and its giant amplification by radio-frequency fields
• The theory of EPR and spin relaxation in conventional superconductors with paramagnetic impurities ^{[5] [6] [7]}
• The theory of spin kinetics and magnetic resonance in usual and high-T_c superconductors^{[8] [9]} and Kondo systems with heavy fermions.^[10]

These last theoretical investigations are best described by Nobel Prize winner Prof. K. Alex Müller in the paper titled "The Impact of ESR (EPR) on the Understanding of Cuprates and Their Superconductivity":

Honors and awards

• Medal "For the Development of Virgin Lands" (1958)
• Order of the Red Banner of Labour (1976)
• Medal "Veteran of Labour" (1983)
• Honored Worker of Science of TASSR (1984)
• Honored Worker of Science of Russian Federation (2000)
• Honored Professor of Kazan University (2004)
• Order of Honour (Russia) (2005)
• State Prize of the Republic of Tatarstan in the field of science and technology (2007)
• Order Order «For Merit to the Republic of Tatarstan» (2015)

References

• Personal page of B.I.Kochelaev on the website of Kazan Federal University

Notes and References

1. http://www.jetp.ac.ru/cgi-bin/r/index/r/37/1/p242?a=list Contribution to the Theory of Spin-Lattice Relaxation of Nuclear Spins in Ionic Crystals B.I. Kochelaev ZhETF, 37, 242 (1959)
2. http://www.jetp.ac.ru/cgi-bin/r/index/r/42/5/p1303?a=list Spin-Spin Interaction via a Phonon Field in Paramagnetic Crystals L.K. Aminov, B.I. Kochelaev ZhETF, 42, 1303 (1962)
3. Web site: B.I. Kochelaev, Yu.G. Nazarov and A.Kh. Khasanov. A light superscattering by the paramagnetic ions spin system Pis’ma ZhETF, 33, 475 (1983) . 2019-02-02 . 2020-02-19 . https://web.archive.org/web/20200219205151/http://www.jetpletters.ac.ru/ps/374/article_5912.shtml . dead .
4. http://www.jetp.ac.ru/cgi-bin/r/index/r/42/5/p1303?a=list Spin-Spin Interaction via a Phonon Field in Paramagnetic Crystals L.K. Aminov, B.I. Kochelaev ZhETF, 42, 1303 (1962)
5. Web site: N.E. Alekseevskii, I.A. Garifullin, B.I. Kochelaev and E.G. Kharakhashyan. Electron paramagnetic resonance on localized magnetic states in a superconducting system La-Er. ZhETF, 72, 1523 (1977) . 2019-02-02 . 2021-04-10 . https://web.archive.org/web/20210410220105/http://jetp.ac.ru/cgi-bin/r/index/e/45/4/p799?a=list . dead .
6. Web site: A.A. Kosov and B.I. Kochelaev. Electron paramagnetic resonance of localized magnetic moments in non-gap superconductors. ZhETF, 74, 14 (1978) . 2019-02-02 . 2021-05-17 . https://web.archive.org/web/20210517120458/http://www.jetp.ac.ru/cgi-bin/r/index/e/47/1/p75?a=list . dead .
7. http://www.jetp.ac.ru/cgi-bin/r/index/e/49/2/p291?a=list B.I. Kochelaev, L.R. Tagirov, M.G. Khusainov. Space dispersion of a spin susceptibility of conduction electrons in a superconductor. ZhETF, 76, 578 (1979)
8. https://journals.aps.org/prb/abstract/10.1103/PhysRevB.61.5888 A. Shengelaya, Guo-meng Zhao, H. Keller, K.-A. Müller, B.I. Kochelaev. EPR in La_1-xCa_xMnO₃: Relaxation and bottleneck. Phys. Rev. B 61, 5888 (2000)
9. https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.93.017001 A. Shengelaya, M. Bruun, B.I. Kochelaev, A. Safina, K. Conder, K.-A. Müller. Metallic phase in lightly doped La_2-xSr_xCuO₄ observed by electron paramagnetic resonance. Phys. Rev. Lett. 93, 01 7001 (2004)
10. https://epjb.epj.org/articles/epjb/abs/2009/24/b090725/b090725.html Why could electron spin resonance be observed in a heavy fermion Kondo lattice? Eur. Phys. J. B. 72, 485 (2009)