Department of Physics, Institute of Natural Science, Federal University of Lavras
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Generalized transformation for decorated spin models
O Rojas, JS Valverde, SM De Souza
Physica A: Statistical Mechanics and its Applications 388 (8), 1419-1430, 2009
Thermal entanglement of a spin-1/2 Ising–Heisenberg model on a symmetrical diamond chain
NS Ananikian, LN Ananikyan, LA Chakhmakhchyan, O Rojas
Journal of Physics: Condensed Matter 24 (25), 256001, 2012
Thermal entanglement in an exactly solvable Ising-XXZ diamond chain structure
O Rojas, M Rojas, NS Ananikian, SM de Souza
Physical Review A 86 (4), 042330, 2012
Exactly solvable mixed-spin Ising-Heisenberg diamond chain with biquadratic interactions and single-ion anisotropy
O Rojas, SM De Souza, V Ohanyan, M Khurshudyan
Physical Review B 83 (9), 094430, 2011
Phase diagram of the asymmetric tetrahedral Ising–Heisenberg chain
JS Valverde, O Rojas, SM de Souza
Journal of Physics: Condensed Matter 20 (34), 345208, 2008
Pairwise thermal entanglement in the Ising-XYZ diamond chain structure in an external magnetic field
J Torrico, M Rojas, SM De Souza, O Rojas, NS Ananikian
Europhysics Letters 108 (5), 50007, 2014
Spin frustration of a spin-1/2 Ising–Heisenberg three-leg tube as an indispensable ground for thermal entanglement
J Strečka, RC Alécio, ML Lyra, O Rojas
Journal of Magnetism and Magnetic Materials 409, 124-133, 2016
Frustrated Ising model on the Cairo pentagonal lattice
M Rojas, O Rojas, SM de Souza
Physical Review E 86 (5), 051116, 2012
Magnetization process, bipartite entanglement, and enhanced magnetocaloric effect of the exactly solved spin-1/2 Ising-Heisenberg tetrahedral chain
J Strečka, O Rojas, T Verkholyak, ML Lyra
Physical Review E 89 (2), 022143, 2014
Direct algebraic mapping transformation for decorated spin models
O Rojas, SM De Souza
Journal of Physics A: Mathematical and Theoretical 44 (24), 245001, 2011
High temperature expansion for a chain model
O Rojas, SM de Souza, MT Thomaz
Journal of Mathematical Physics 43 (3), 1390-1407, 2002
Thermal entanglement in an orthogonal dimer-plaquette chain with alternating Ising–Heisenberg coupling
HG Paulinelli, SM De Souza, O Rojas
Journal of Physics: Condensed Matter 25 (30), 306003, 2013
Geometrical frustration of an extended hubbard diamond chain in the quasiatomic limit
O Rojas, SM De Souza, NS Ananikian
Physical Review E 85 (6), 061123, 2012
Spinless fermion model on diamond chain
O Rojas, SM De Souza
Physics Letters A 375 (10), 1295-1299, 2011
Thermal entanglement and sharp specific-heat peak in an exactly solved spin-1/2 Ising-Heisenberg ladder with alternating Ising and Heisenberg inter–leg couplings
O Rojas, J Strečka, SM de Souza
Solid State Communications 246, 68-75, 2016
Quasi-phases and pseudo-transitions in one-dimensional models with nearest neighbor interactions
SM De Souza, O Rojas
Solid State Communications 269, 131-134, 2018
Magnetization non-rational quasi-plateau and spatially modulated spin order in the model of the single-chain magnet,[{(CuL) 2Dy}{Mo (CN) 8}]· 2CH3CN· H2O
S Bellucci, V Ohanyan, O Rojas
Europhysics Letters 105 (4), 47012, 2014
Phase diagram of a coupled tetrahedral Heisenberg model
O Rojas, FC Alcaraz
Physical Review B 67 (17), 174401, 2003
Spin frustration and fermionic entanglement in an exactly solved hybrid diamond chain with localized Ising spins and mobile electrons
J Torrico, M Rojas, MSS Pereira, J Strečka, ML Lyra
Physical Review B 93 (1), 014428, 2016
Spin-wave analysis of the spin-1 Heisenberg antiferromagnet with uniaxial single-ion anisotropy in a field
CJ Hamer, O Rojas, J Oitmaa
Physical Review B 81 (21), 214424, 2010
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