TY - THES AU - Balogh, László TI - First principles simulations of magnetic nanostructures PB - Budapesti Műszaki és Gazdaságtudományi Egyetem PY - 2017 SP - 102 UR - https://m2.mtmt.hu/api/publication/3412154 ID - 3412154 LA - English DB - MTMT ER - TY - JOUR AU - Balogh, László AU - Udvardi, László AU - Szunyogh, László TI - Magnetic anisotropy and chirality of frustrated Cr nanostructures on Au(1 1 1) JF - JOURNAL OF PHYSICS-CONDENSED MATTER J2 - J PHYS CONDENS MAT VL - 26 PY - 2014 IS - 43 PG - 8 SN - 0953-8984 DO - 10.1088/0953-8984/26/43/436001 UR - https://m2.mtmt.hu/api/publication/2772425 ID - 2772425 AB - By using a fully relativistic embedded cluster Green's function technique we investigated the magnetic anisotropy properties of four different compact Cr trimers (equilateral triangles) and Cr mono-layers deposited on the Au(111) surface in both fcc and hcp stackings. For all trimers the magnetic ground state was found to be a frustrated 120° Néel configuration. Applying global spin rotations to the magnetic ground state, predictions of an appropriate second order spin Hamiltonian were reproduced with high accuracy by first principles calculations. For the Cr trimers with adjacent Au atoms in similar geometry, we obtained similar values for the in-plane and out-of-plane anisotropy parameters, however, the Dzyaloshinskii–Moriya (DM) interactions appeared to differ remarkably. For two kinds of trimers we found an unconventional magnetic ground state showing 90° in-the-plane rotation with respect to the high symmetry directions. Due to higher symmetry, the in-plane anisotropy term was missing for the mono-layers and distinctly different DM interactions were obtained for the different stackings. The chiral degeneracy of the Néel configurations was lifted by an energy less than 2 meV for the trimers, while this value increased up to about 15 meV per 3 Cr atoms for the hcp packed mono-layer. LA - English DB - MTMT ER - TY - JOUR AU - Deák, András AU - Simon, Eszter AU - Balogh, László AU - Szunyogh, László AU - dos, Santos Dias M AU - Staunton, J B TI - Metallic magnetism at finite temperatures studied by relativistic disordered moment description: Theory and applications JF - PHYSICAL REVIEW B J2 - PHYS REV B VL - 89 PY - 2014 IS - 22 PG - 11 SN - 2469-9950 DO - 10.1103/PhysRevB.89.224401 UR - https://m2.mtmt.hu/api/publication/2699220 ID - 2699220 LA - English DB - MTMT ER - TY - GEN AU - Balogh, László AU - Udvardi, László AU - Szunyogh, László TI - Magnetic anisotropy in frustrated clusters and monolayers. Cr on triangular Au(111) surface TS - Cr on triangular Au(111) surface PY - 2013 UR - https://m2.mtmt.hu/api/publication/2693460 ID - 2693460 LA - Hungarian DB - MTMT ER - TY - GEN AU - Balogh, László AU - Palotás, Krisztián AU - Udvardi, László AU - Szunyogh, László TI - Magnetic anisotropy in frustrated clusters and monolayers: Cr on triangular Au(111) surface. MAGFUM Swedish--Hungarian--Finnish STINT workshop, Magneto-mechanical properties of complex functional materials, Balatonfüred, Hungary, 8-9 April 2013 TS - MAGFUM Swedish--Hungarian--Finnish STINT workshop, Magneto-mechanical properties of complex functional materials, Balatonfüred, Hungary, 8-9 April 2013 PY - 2013 UR - https://m2.mtmt.hu/api/publication/2692874 ID - 2692874 LA - English DB - MTMT ER - TY - GEN AU - Balogh, László AU - Palotás, Krisztián AU - Udvardi, László AU - Szunyogh, László TI - Theoretical study of magnetic domain walls through a cobalt nanocontact PY - 2012 UR - https://m2.mtmt.hu/api/publication/2693458 ID - 2693458 N1 - Korábbi besorolás (2014-05-16-ig): Egyéb/Előadás LA - English DB - MTMT ER - TY - GEN AU - Balogh, László AU - Palotás, Krisztián AU - Udvardi, László AU - Szunyogh, László AU - Nowak, Ulrich TI - First principles study of domain walls through a Co nanocontact PY - 2012 UR - https://m2.mtmt.hu/api/publication/2691499 ID - 2691499 N1 - Korábbi besorolás (2014-05-16-ig): Egyéb/Poszter LA - English DB - MTMT ER - TY - GEN AU - Balogh, László TI - Mágneses nanorészecskék elméleti vizsgálata. Fizikus Doktoranduszok Konferenciája, Balatonfenyves, 2012. június 15-17. TS - Fizikus Doktoranduszok Konferenciája, Balatonfenyves, 2012. június 15-17. PY - 2012 UR - https://m2.mtmt.hu/api/publication/2686698 ID - 2686698 N1 - Korábbi besorolás (2014-05-16-ig): Egyéb/Előadás LA - Hungarian DB - MTMT ER - TY - GEN AU - Balogh, László AU - Palotás, Krisztián AU - Szunyogh, László AU - Udvardi, László TI - Magnetic anisotropy in deposited Cr clusters. Magneto-mechanical properties of complex functional materials, MAGFUM Swedish-Hungarian-Finnish STINT workshop, Turku, Finland, 15-17 February 2012 TS - Magneto-mechanical properties of complex functional materials, MAGFUM Swedish-Hungarian-Finnish STINT workshop, Turku, Finland, 15-17 February 2012 PY - 2012 UR - https://m2.mtmt.hu/api/publication/2686697 ID - 2686697 N1 - Korábbi besorolás (2014-05-16-ig): Egyéb/Előadás LA - English DB - MTMT ER - TY - CHAP AU - Balogh, László ED - anon, null TI - Theoretical study of magnetic domain walls through a cobalt nanocontact T2 - PhD Conference of the Doctoral School for Physics: organised by the Doctoral School of Physics of the Faculty of Natural Sciences Budapest University of Technology and Economics, in the framework of TÁMOP-4.2.2/B-10/1-2010-0009 PB - Budapest University of Technology and Economics CY - Budapest SN - 9789633130650 PY - 2012 SP - 14 EP - 17 PG - 4 UR - https://m2.mtmt.hu/api/publication/2686696 ID - 2686696 LA - English DB - MTMT ER -