Integrated Rashba-type platform for data storage and bit manipulation
Project Director: Dr. Dana POPESCU
Project: PN-III-P1-1.1-TE-2021-0136/TE-2021-1053/ RaBit
PI: Dr. Dana Georgeta Popescu
Project type: National
Program: TE
Financed by: Unitatea Executivă pentru Finanțarea Învățământului Superior, a Cercetării, Dezvoltării și Inovării
Contractor: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA
Starting at: 15 May 2022
Finishing at: 14 May 2024
The project aims at offering an alternative to already available random access memories in the form of integrated Rashba-type platform for data storage and additional bit manipulation accompanied by the consequent validation of the mixed functionality as: i) spin-orbit based multiferroic random access memory (MfRAM) and ii) logical gate able to perform binary operations. By the end of the implementation time, the validation for the mixed, logical gate and spin-orbit torque MfRAMs based on the coupling between the spin and charge degrees of freedom in Rashba coupled semiconductor and multiferroic systems will be delivered. The Rashba-coupled metal/semiconductor systems will be the interfaces of ferromagnetic materials (Mn, Fe, Ni) with Ge(111), which were shown to exhbit large Rashba effects and large spin to charge conversion through inverse Edelstein effect while the Rashba-type multiferroics will be the interface of dissimilar materials: ferromagnets (Mn, Fe, Ni) and Rashba-type ferroelectrics (GeTe), with the relevant cross-coupling close to the contact region.
Dr. CS II Dana Georgeta Popescu
Dr. CS I Marius-Adrian Husanu
Dr. CS II Rasoga Oana
Dr. CS III Bogdan Ostahie
Dr. CS III Arpad Mihai Rostas
Drd. Marian Cosmin Istrate
Outcome/results:
Published articles:
1. M.A. Husanu, D.G. Popescu, F. Bisti, L.M. Hrib, L.D. Filip, I. Pasuk, R. Negrea, M.C. Istrate, L. Lev, T. Schmitt, L. Pintilie, A. Mishchenko, C.M. Teodorescu, V.N. Strocov Ferroelectricity modulates polaronic coupling at multiferroic interfaces, Communications Physics 5, 209 (2022).
Accepted articles:
D.G. Popescu, M.A. Husanu, Procopiou Constantinou, Lucian Dragos Filip, Lucian Trupina, Cristina Ioana Bucur, Iuliana Pasuk, Cristina Chirila, Luminita Mirela Hrib, Viorica Stancu,
Lucian Pintilie, Thorsten Schmitt, Cristian Mihail Teodorescu, Vladimir Strocov, Experimental band structure of PbZrTiO 3 : Mechanism of ferroelectric stabilization, Advanced Science 2022
Book chapters:
1. Compensation and screening of ferroelectricity in perovskite oxides, D.G. Popescu, M. Husanu, Perovskites: Ceramics, Editors: J.L. Clabel H. and V.A.G. Rivera, Elsevier,2022, ISBN: 9780323905862
2. Polaronic effects in perovskite oxides, M. Husanu, D.G. Popescu, Perovskites: Ceramics, Editors: J.L. Clabel H. and V.A.G. Rivera, Elsevier,2022, ISBN: 9780323905862
Patent Requests:
1. D.G. Popescu, M.A. Husanu, 2D Photonic Crystal in Ge Matrix, A/00668 - 2022
International conferences:
1. D.G. Popescu, M.A. Husanu, Rashba coupling in metallic states at the metal/semiconductor interface, 20th International Balkan Workshop on Applied Physics and Materials Science, Constanta, Romania, July 12-15 (2022)
2. M.A. Husanu, D.G. Popescu, Modified occupancy of the orbitals at the conducting interface LaAlO3/SrTiO3, 20th International Balkan Workshop on Applied Physics and Materials Science, Constanta, Romania, July 12-15 (2022)
3. D.G. Popescu, M.A. Husanu, C. Chirila, L. Pintilie, C.M. Teodorescu, Impact on Ferroelectricity and Band Alignment of Gradually Grown metal on BaTiO3, International Conference on Strongly Correlated Electron Systems, Amsterdam, The Netherlands, July 24-29 (2022)
4. D.G. Popescu, L.D. Filip, C.I. Bucur, C. Chirila, L. Pintilie, T. Schmitt, C.M. Teodorescu, M.A. Husanu, V.N. Strocov , Stabilization mechanisms of opposed ferroelectric states, International Conference on Strongly Correlated Electron Systems, Amsterdam, The Netherlands, July 24-29 (2022)
5. D.G. Popescu, L. Borcan, A. Iancu, A. Rostas, C. Ruxandra, V. Strocov, M.A. Husanu, Rashba coupling in metallic states at the Ni-doped Ge interface, The 7th International Colloquium „Physics of Materials”, Bucharest, Romania, November 10 - 11 (2022)
6. 2. M.A. Husanu, A. Iancu, D. G. Popescu, C. Chirila, C. M. Teodorescu, Orbital character of two dimensional electron gas at an oxide interface, The 7th International Colloquium „Physics of Materials”, Bucharest, Romania, November 10 - 11 (2022) - oral presentation
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