Alexey Kovalev
Associate Professor
Research Interests
- Spintronics and Spincaloritronics
- Spin-Hall Effect
- Magnetoelectronics
- Spin-Transfer Torque
- Anomalous Hall Effect
- Magnetization Dynamics
- Nanoelectromechanical Systems
- Theory of Spin-Polaron in 2D Antiferromagnets
- Quantum Information Theory
Recent Talks
- "Magnetomechanical Effects in Magnetic Clusters and Molecules," 55th Conference on Magnetism and Magnetic Materials, Atlanta/Georgia, USA (invited 11/2010)
- "Berry phase of spin: from spin transfer mechanical and magnetization torques to the anomalous Hall effect," The City University of New York (1/2011)
- "Macrospin Tunneling and Magnetopolaritons with Nanomechanical Interference," Seventh International Workshop on Magnetism and Superconductivity at the Nanoscale, Coma-Ruga, Spain (invited 7/2011) (see PDF)
- "Spintronics phenomena in the classical and quantum worlds," Stony Brook University (2/2012) (see PDF)
- "Improved quantum hypergraph product LDPC codes," APS March Meeting 2012 (3/2012) (see PDF)
- "Thermomagnonic spin transfer and Peltier effects in insulating magnets," APS March Meeting 2012 (invited 3/2012) (see PDF)
- "Quantum LDPC codes: hypergraph-product and related constructions," IEEE International Symposium on Information Theory (ISIT 2012) (see PDF)
- "Fault tolerance of "bad" quantum low-density parity check codes," Perimeter Institute For Theoretical Physics (10/2012) (see video)
- "Spin supercurrents and torquing with Majorana fermions," KITP UCSB (10/2013) (see link)
Selected Publications
- A. A. Kovalev, A. Brataas, and G. E. W. Bauer, "Spin transfer in diffusive ferromagnet-normal metal systems with spin-flip scattering", Phys. Rev. B 66, 224424 (2002)
- A. A. Kovalev, G. E. W. Bauer and A. Brataas, "Current-driven ferromagnetic resonance, mechanical torques and rotary motion in magnetic nanostructures", Phys. Rev. B 75, 014430 (2007)
- A. A. Kovalev, G. E. W. Bauer and A. Brataas, "Nano-mechanical magnetization reversal", Phys. Rev. Lett. 94, 167201 (2005)
- A. A. Kovalev, K. Výborný, J. Sinova, "Hybrid skew scattering regime of the anomalous Hall effect in Rashba systems: unifying Keldysh, Boltzmann, and Kubo formalisms", Phys. Rev. B 78, 041305(R) (2008)
- A. F. Barabanov, A. A. Kovalev, O. V. Urazaev, A. M. Belemouk, "Spin-polaron excitations in the two-dimensional Kondo lattice with spin frustration", Physics Letters A 265, 221 – 224, (2000)
- A. A. Kovalev, "NANOMECHATRONICS: A new twist on a classic experiment", Nature Nanotechnology 3, 710 (2008)
- A. A. Kovalev, Y. Tserkovnyak, K. Výborný, J. Sinova, "Transport theory for disordered multiple-band systems: Anomalous Hall effect and anisotropic magnetoresistance", Phys. Rev. B 79, 195129 (2009)
- A. A. Kovalev and Y. Tserkovnyak, "Thermoelectric spin transfer in textured magnets", Phys. Rev. B 80, 100408(R) (2009)
- A. A. Kovalev and Y. Tserkovnyak, "Magnetocaloritronic nanomachines", Solid State Commun. (Special issue: Caloritronics) 150, 500 (2010)
- A. A. Kovalev, J. Sinova and Y. Tserkovnyak, "Anomalous Hall Effect in Disordered Multiband Metals", Phys. Rev. Lett. 105, 036601 (2010)
- A. A. Kovalev, L. X. Hayden, G. E. W. Bauer, Y. Tserkovnyak, "Macrospin Tunneling and Magnetopolaritons with Nanomechanical Interference", Phys. Rev. Lett. 106, 147203 (2011) (see pdf)
Group Members
I am always looking for creative students and postdocs who are interested in theoretical condensed matter physics.
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Bo LiGraduate StudentJH 244A Jorgensen Hall |
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Shane SandhoefnerGraduate StudentJH 244A Jorgensen Hall |
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Former Group Members: | ||
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Vladimir Zyuzin, Posdoctoral Researcher at Texas A&M | |
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Utkan Güngördü, Postdoctoral Researcher at University of Maryland, Baltimore County | |
Sanjay Prabhakar, Postdoctoral Researcher, Georgia State University-Atlanta | ||
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Rabindra Nepal, Senior Scientist at Zoetis Inc. | |
Aldo Raeliarijaona, Postdoctoral Fellow - Carnegie Institution for Science |
News:
Congratulations to Bo Li for recieving his PhD!!!
Our paper in Physical Review Letters:
Magnon Landau Levels and Spin Responses in Antiferromagnets
Bo Li and Alexey A. Kovalev
Phys. Rev. Lett. 125, 257201 (2020) – Published 14 December 2020
Our paper in PRB Editors' Suggestion:
Magnetoelectric control of topological phases in graphene
Hiroyuki Takenaka, Shane Sandhoefner, Alexey A. Kovalev, and Evgeny Y. Tsymbal
Phys. Rev. B 100, 125156 (2019) – Published 25 September 2019
Our paper in March Kaleidoscope:
Valley-dependent Lorentz force and Aharonov-Bohm phase in strained graphene p-n junction
Sanjay Prabhakar, Rabindra Nepal, Roderick Melnik, and Alexey A. Kovalev
Phys. Rev. B 99, 094111 (2019) - Published 27 March 2019
Other publication updates:
First-principles calculation of spin-orbit torque in a Co/Pt bilayer
K. D. Belashchenko, Alexey A. Kovalev, and M. van Schilfgaarde
Phys. Rev. Materials 3, 011401(R) (2019) - Published 29 January 2019
Boundary twists, instabilities, and creation of skyrmions and antiskyrmions
Aldo Raeliarijaona, Rabindra Nepal, and Alexey A. Kovalev
Phys. Rev. Materials 2, 124401 (2018) - Published 17 December 2018