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Tailoring spin and magnetism: electronic structure calculations

Grant number: 11/19333-4
Support type:Scholarships abroad - Research
Effective date (Start): February 20, 2012
Effective date (End): February 19, 2013
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Guilherme Matos Sipahi
Grantee:Guilherme Matos Sipahi
Host: Igor Zutic
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Local de pesquisa : University at Buffalo (UB), United States  


In modern information technology, charge-based logic is realized in semiconductor micro-processors, while ferromagnetic metals enable the use of carrier spin and associated magnetic moments for information storage. However, this is only the tip of the iceberg. The control of spin and magnetism in a wide class of materials and their nanostructures, generally referred to as spintronics has the potential for a much broader impact. In this proposed work I will explore a new generation of multifunctional devices that seamlessly integrate memory and logic for low-power/high-speed operation and open new avenues for transferring information. However, before this integration can be realized, a deeper understanding is required of how spin and magnetism can be tailored in semiconductors and their nanostructures. In this proposal, I am applying for a scholarship award to initiate several new research directions in Brazil which will be made possible by my sabbatical visit to the group of Prof. Igor Zutic at the University at Buffalo, the State University of New York, USA. Prof. Zutic is a renowned expert in the fields of spintronics, spin transport and magnetism with important works in his own area and also several important reviews and a recently co-edited book in the field. The goal of this stay is to establish a strong collaborative research focusing mostly on spin and magnetism in semiconductors, by combining my expertise in electronic structure calculations with the one available in the group of Prof. Zutic at Buffalo. The subjects to be studied are: silicon spintronics, spin lasers and magnetic quantum dos; always combining electronic structure and transport and magnetic properties, aiming the understanding of basic spin and magnetic properties and the analysis and proposals of new spintronic devices. This effort will also be strongly enhanced by my close collaboration with several experimental groups at Buffalo who are working on various spin-dependent properties of semiconductors and their nanostructures. (AU)

Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FARIA JUNIOR, PAULO E.; XU, GAOFENG; CHEN, YANG-FANG; SIPAHI, GUILHERME M.; ZUTIC, IGOR. Wurtzite spin lasers. Physical Review B, v. 95, n. 11 MAR 1 2017. Web of Science Citations: 8.
BASTOS, CARLOS M. O.; SABINO, FERNANDO P.; FARIA JUNIOR, PAULO E.; CAMPOS, TIAGO; DA SILVA, JUAREZ L. F.; SIPAHI, GUILHERME M. Stability and accuracy control of k center dot p parameters. Semiconductor Science and Technology, v. 31, n. 10 OCT 2016. Web of Science Citations: 4.
FARIA JUNIOR, PAULO E.; XU, GAOFENG; LEE, JEONGSU; GERHARDT, NILS C.; SIPAHI, GUILHERME M.; ZUTIC, IGOR. Toward high-frequency operation of spin lasers. Physical Review B, v. 92, n. 7 AUG 25 2015. Web of Science Citations: 26.
FARIA JUNIOR, P. E.; CAMPOS, T.; SIPAHI, G. M. Interband polarized absorption in InP polytypic superlattices. Journal of Applied Physics, v. 116, n. 19 NOV 21 2014. Web of Science Citations: 7.
LAZIC, P.; SIPAHI, G. M.; KAWAKAMI, R. K.; ZUTIC, IGOR. Graphene spintronics: Spin injection and proximity effects from first principles. Physical Review B, v. 90, n. 8 AUG 22 2014. Web of Science Citations: 29.
SIPAHI, G. M.; ZUTIC, IGOR; ATODIRESEI, N.; KAWAKAMI, R. K.; LAZIC, P. Spin polarization of Co(0001)/graphene junctions from first principles. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 26, n. 10 MAR 12 2014. Web of Science Citations: 12.
TESAROVA, N.; OSTATNICKY, T.; NOVAK, V.; OLEJNIK, K.; SUBRT, J.; REICHLOVA, H.; ELLIS, C. T.; MUKHERJEE, A.; LEE, J.; SIPAHI, G. M.; SINOVA, J.; HAMRLE, J.; JUNGWIRTH, T.; NEMEC, P.; CERNE, J.; VYBORNY, K. Systematic study of magnetic linear dichroism and birefringence in (Ga,Mn)As. Physical Review B, v. 89, n. 8 FEB 14 2014. Web of Science Citations: 17.

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