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Quantum Monte Carlo study of dynamic magnetic properties of nano-graphene
Univ Moulay Ismail, Unit Associated CNRST URAC 08, Fac Sci, LP2MS,Phys Dept, BP 11201, Meknes, Morocco.
Univ Moulay Ismail, Unit Associated CNRST URAC 08, Fac Sci, LP2MS,Phys Dept, BP 11201, Meknes, Morocco.
Univ Moulay Ismail, Unit Associated CNRST URAC 08, Fac Sci, LP2MS,Phys Dept, BP 11201, Meknes, Morocco;Uppsala Univ, Condensed Matter Theory Grp, Dept Phys & Astron, S-75120 Uppsala, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Univ Moulay Ismail, Unit Associated CNRST URAC 08, Fac Sci, LP2MS,Phys Dept, BP 11201, Meknes, Morocco;Max Planck Inst Phys Complexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany.
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2018 (English)In: Journal of Magnetism and Magnetic Materials, ISSN 0304-8853, E-ISSN 1873-4766, Vol. 460, p. 223-228Article in journal (Refereed) Published
Abstract [en]

Using the Quantum Monte Carlo simulation (QMCS), the dynamic blocking temperature of a nanographene bilayer has been investigated within the framework of the Transverse Ising Model (TIM) with mixed spins, under the existence of the time-dependent oscillating longitudinal magnetic field (h(t) = h(b) + h(0)cos(omega t)) and the transverse field (Omega). The influence of the time-dependent oscillating longitudinal magnetic field, the period of magnetic field (tau) and the transverse field (Omega) on the thermal behavior of the total longitudinal and transverse dynamic order parameters, the total dynamic magnetic susceptibility and the dynamic hysteresis of the nano-graphene bilayer are also studied. As results, we remark the appearance of multiple hysteresis loops and the system exhibits the superparamagnetic behavior at the dynamic blocking temperature.

Place, publisher, year, edition, pages
2018. Vol. 460, p. 223-228
Keywords [en]
Nano-graphene, Dynamic phase transition, Hysteresis loop, Transverse Ising model, Quantum Monte Carlo method
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-357676DOI: 10.1016/j.jmmm.2018.04.007ISI: 000434253700031OAI: oai:DiVA.org:uu-357676DiVA, id: diva2:1241611
Funder
Swedish Research Council, 348-2011-7264Available from: 2018-08-24 Created: 2018-08-24 Last updated: 2018-08-24Bibliographically approved

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Ainane, AbdelmajidAhuja, Rajeev

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