Ultrafast manipulation of the physical properties of materials

• Grant number: 19/02407-7
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2020
• End date: February 28, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Andre Bohomoletz Henriques
• Grantee: Andre Bohomoletz Henriques
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Ultra-short pulses of light, so-called pump pulses, will be used to alter the optical, magnetic, vibrational, and superconductivity properties of matter. The effect of the incident pulses on the state of matter will also be monitored using light pulses, the so-called probe pulses. Monitoring will be performed with femtosecond resolution. This technique for controlling the state of matter is entirely optical, which gives it the advantage of maximum speed and efficiency compared to other techniques. This research includes the switching via light between a non-magnetized state and the magnetized state, the switching between the superconducting state and the normal state. Magnetic semiconductors and magnetic semiconductor nanostructures combined with superconducting materials will be investigated. The samples for the project will be produced by the best specialists worldwide. This research will unveil new mechanisms through which light can be used to control the state of matter, opening the perspective of new ultra fast technological applications, and will contribute to the advancement of knowledge in the area of light-matter interaction. (AU)

Scientific publications

(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)

GRATENS, X.; OU, YUNBO; MOODERA, J. S.; RAPPL, P. H. O.; HENRIQUES, A. B.. Hypergiant spin polarons photogenerated in ferromagnetic europium chalcogenides. Applied Physics Letters, v. 116, n. 15, APR 13 2020. (19/02407-7)

VAN KOOTEN, S. C. P.; GRATENS, X.; HENRIQUES, A. B.. Modeling huge photoinduced spin polarons in intrinsic magnetic semiconductors. PHYSICAL REVIEW B, v. 103, n. 3, p. 6-pg., 2021-01-15. (19/02407-7)

VAN KOOTEN, S. C. P.; GRATENS, X.; HENRIQUES, A. B.. Modeling huge photoinduced spin polarons in intrinsic magnetic semiconductors. Physical Review B, v. 103, n. 3, JAN 15 2021. (19/02407-7)