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Viana, J. Roberto
1518  Ergebnisse:
Personensuche X
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1

First-order transition and tricritical behavior of the tran..:

Costabile, Emanuel ; Viana, J. Roberto ; de Sousa, J. Ricardo.
Solid State Communications.  212 (2015)  - p. 30-34 , 2015
Link: https://doi.org/10.1016/..
 
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2

The general-spin Blume–Capel model: A study of the multicri..:

Costabile, Emanuel ; Roberto Viana, J. ; Ricardo de Sousa, J..
Physica A: Statistical Mechanics and its Applications.  393 (2014)  - p. 297-303 , 2014
Link: https://doi.org/10.1016/..
 
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3

First-order transition on the frustrated spin-1/2 Heisenber..:

Lapa, Rodrigo S. ; Mendonça, Griffith ; Roberto Viana, J..
Journal of Magnetism and Magnetic Materials.  369 (2014)  - p. 44-48 , 2014
Link: https://doi.org/10.1016/..
 
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4

An effective correlated mean-field theory applied in the sp..:

Roberto Viana, J. ; Salmon, Octávio R. ; Ricardo de Sousa, J...
Journal of Magnetism and Magnetic Materials.  369 (2014)  - p. 101-106 , 2014
Link: https://doi.org/10.1016/..
 
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5

Monte Carlo study of the three-dimensional spatially anisot..:

Salmon, Octavio D.R. ; Neto, Minos A. ; Viana, J. Roberto..
Physics Letters A.  377 (2013)  34-36 - p. 1991-1995 , 2013
Link: https://doi.org/10.1016/..
 
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6

The anisotropic Ising superantiferromagnet on a simple cubi..:

Ricardo de Sousa, J. ; Neto, Minos A. ; Padilha, Igor T...
Physica B: Condensed Matter.  431 (2013)  - p. 80-83 , 2013
Link: https://doi.org/10.1016/..
 
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7

Study of the first-order transition in the spin-1 Blume–Cap..:

Costabile, Emanuel ; Amazonas, Marcio A. ; Viana, J. Roberto.
Physics Letters A.  376 (2012)  45 - p. 2922-2925 , 2012
Link: https://doi.org/10.1016/..
 
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8

The anisotropic quantum spin-1/2 Heisenberg antiferromagnet..:

Neto, Minos A. ; Roberto Viana, J. ; Ricardo de Sousa, J.
Journal of Magnetism and Magnetic Materials.  324 (2012)  16 - p. 2405-2409 , 2012
Link: https://doi.org/10.1016/..
 
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9

The quantum spin-1/2 frustrated Heisenberg model on a stack..:

Nunes, Wagner ; Viana, J Roberto ; Ricardo de Sousa, J
Journal of Statistical Mechanics: Theory and Experiment.  2011 (2011)  5 - p. P05016 , 2011
Link: https://doi.org/10.1088/..
 
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10

The quantum spin-1/2J1–J2antiferromagnet on a stacked squar..:

Nunes, Wagner A ; Ricardo de Sousa, J ; Roberto Viana, J.
Journal of Physics: Condensed Matter.  22 (2010)  14 - p. 146004 , 2010
Link: https://doi.org/10.1088/..
 
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11

Monte Carlo study of the Ising antiferromagnetic with a lon..:

Viana, J. Roberto ; Neto, Minos A. ; de Sousa, J. Ricardo
Physics Letters A.  373 (2009)  29 - p. 2413-2415 , 2009
Link: https://doi.org/10.1016/..
 
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12

Phase diagram of the Ising antiferromagnet with nearest-nei..:

dos Anjos, Rosana A. ; Roberto Viana, J. ; Ricardo de Sousa, J.
Physics Letters A.  372 (2008)  8 - p. 1180-1184 , 2008
Link: https://doi.org/10.1016/..
 
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13

Quantum phase transition in the three-dimensional anisotrop..:

Viana, J. Roberto ; de Sousa, J. Ricardo ; Continentino, M. A.
Physical Review B.  77 (2008)  17 - p. , 2008
Link: https://doi.org/10.1103/..
 
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14

First-order quantum phase transition in an anisotropic Isin..:

Viana, J. Roberto ; Ghosh, Angsula ; de Sousa, J. Ricardo
Physical Review B.  77 (2008)  2 - p. , 2008
Link: https://doi.org/10.1103/..
 
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15

Three-dimensional Ising model with nearest- and next-neares..:

dos Anjos, Rosana A. ; Viana, J. Roberto ; de Sousa, J. Ricardo.
Physical Review E.  76 (2007)  2 - p. , 2007
Link: https://doi.org/10.1103/..
 
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