@article {Silvani2015,
	title = {Magnonic Band Structure and Filtering Properties of Square Antidot Lattices in Different Configurations: A Micromagnetic Study},
	journal = {Magnetics Letters, IEEE},
	volume = {6},
	year = {2015},
	pages = {1-4},
	keywords = {2D magnonic crystals, Antidot lattices, artificial Brillouin zones, backward volume wave, Brillouin zones, Dispersion, FILMS, Filtering, Lattices, magnetostatic surface wave, Magnetostatics, magnonic band structure, Magnonics, magnons, micromagnetic simulations, micromagnetics, Microwave Components, MuMax3 code, Ni80Fe20, open source GPU accelerated code, Periodic structures, Permalloy, QUANTUM DOTS, spin waves, spin waves excitation, spin waves propagation, square antidot lattices},
	issn = {1949-307X},
	doi = {10.1109/LMAG.2015.2492467},
	author = {Silvani, R. and Madami, M. and Gubbiotti, G. and Tacchi, S. and Carlotti, G.}
}
@article {S.2014,
	title = {Collective spin waves on a nanowire array with step-modulated thickness},
	journal = {Journal of physics. D, Applied physics (Print)},
	volume = {47},
	year = {2014},
	pages = {105003},
	publisher = {IOP Publishing,},
	address = {Bristol},
	abstract = {It is shown experimentally that collective Bloch spin waves are able to propagate in a dense periodic array of nanowires with step-modulated thickness along the periodicity direction. The spin wave dispersion (frequency versus wave vector k) was measured using the Brillouin light scattering technique by sweeping the wave vector perpendicularly to the wire length. Remarkably, the mode measured at the lowest frequency exhibits an oscillating dispersion and its frequency is up-shifted with respect to the homogeneous-thickness wires of the same width. The modes located at higher frequencies have negligible dependencies on the wave number, i.e. are practically dispersionless. Complementary ferromagnetic resonance measurements enabled us to independently measure the whole set of modes at k = 0, showing a good agreement with the Brillouin light scattering data. These results have been successfully reproduced in a numerical simulation employing a two-dimensional Greenś function description of the dynamic dipole field of the precessing magnetization. The theory also allowed visualizing the non-trivial distribution of dynamic magnetization across the wire cross-section and estimating the Brillouin light scattering cross-section. The analysis of these intensities suggests complicated magneto-optical coupling between the light and the dynamic magnetization in the arrays of nanowires with step-modulated thickness. This work can stimulate the design, tailoring, and characterization of three-dimensional magnonic crystals. Â© 2014 IOP Publishing Ltd.},
	keywords = {Brillouin light scattering, dispersion relations, ferromagnetic resonance, magnonic crystals, nanowires, spin waves},
	issn = {0022-3727},
	doi = {10.1088/0022-3727/47/10/105003},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84894463631&partnerID=q2rCbXpz},
	author = {G Gubbiotti and M Kostylev and S Tacchi and M Madami and G Carlotti and J Ding and A O Adeyeye and F Zighem and A A Stashkevich and E Ivanov and S Samarin}
}
@article {Tacchi2014b,
	title = {[Co/Pd]-CoFeB exchange spring magnets with tunable gap of spin wave excitations},
	journal = {Journal of physics. D, Applied physics (Online)},
	volume = {47},
	year = {2014},
	note = {This work was supported by MIUR-PRIN 2010-11 Project 2010ECA8P3 \'DyNanoMag\'.},
	pages = {495004-1–495004-6},
	publisher = {IOP Publishing.},
	address = {[Bristol]},
	abstract = {Exchange spring magnets, consisting of a [Co(0.5 nm)/Pd(1 nm)]5 multilayer with perpendicular magnetic anisotropy and a Co20Fe60B20 film with easy plane anisotropy, of variable thickness tCFB, are investigated using Brillouin light scattering. On reducing tCFB in the range 0.8-2.3 nm, the spin-wave frequency gap displays a remarkable increase from nearly 4-48 GHz, reflecting the corresponding rapid growth of the tilting angle of the magnetization with respect to the film normal. These findings are interpreted using a one-dimensional model in which each atomic layer is assumed to be uniformly magnetized, subjected to an effective out-of-plane or easy-plane anisotropy depending on the layer position in the stack, and exchange coupled to its two nearest neighbour atomic layers. With respect to previously investigated [Co/Pd]-NiFe hybrid magnets, a largest frequency tunability, restricted to a narrower range of the soft layer thickness, is observed.},
	keywords = {Brillouin light scattering, exchange spring magnets, spin waves},
	issn = {1361-6463},
	doi = {10.1088/0022-3727/47/49/495004},
	url = {http://iopscience.iop.org/0022-3727/47/49/495004/pdf/0022-3727_47_49_495004.pdf},
	author = {S Tacchi and T N Anh Nguyen and G Gubbiotti and M Madami and G Carlotti and M G Pini and A Rettori and V Fallahi and R K Dumas and Johan Åkerman}
}
@article {Gubbiotti2014a,
	title = {Field dependence of the magnetic eigenmode frequencies in layered nanowires with ferromagnetic and antiferromagnetic ground states: experimental and theoretical study},
	journal = {Journal of physics. D, Applied physics (Print)},
	volume = {47},
	year = {2014},
	publisher = {IOP Publishing,},
	address = {Bristol},
	abstract = {The magnetic field dependence of the magnetic eigenmode frequencies in 150 nm wide layered permalloy nanowires (NWs) has been studied by the Brillouin light scattering technique. The NWs have the following layering structure Py(30 nm)/Cu(10 nm)/Py(d)/Cu(10 nm)/Py(30 nm) with fixed thickness of the top and bottom stripe and differ by the thickness d of the middle Py stripe (with d = 15, 30, 60 nm). The magnetic field, applied along the length of the wires, has been swept from positive to negative saturation thus exploring both the ferromagnetic and the antiferromagnetic relative orientation of the magnetization in the middle stripe with respect to the outermost ones. In conjunction with the transition between the two different ground states, the mode frequencies undergo an abrupt variation. Moreover the mode frequencies in the antiferromagnetic state are relatively insensitive to the applied field strength. The experimental results (frequencies versus magnetic field strength) have been successfully interpreted by means of a microscopic (Hamiltonian-based) theory which incorporates both the exchange and dipole-dipole interactions as well as effects of single-ion anisotropy and an external magnetic field applied parallel to the NW axis. This model was extended to account for parallel and antiparallel magnetization orientations in the layered NWs, enabling us to also calculate the probability amplitude of each spin-wave eigenmode at any position in the trilayered NWs.},
	keywords = {Brillouin light scattering, nanowires, spin waves},
	issn = {0022-3727},
	doi = {10.1088/0022-3727/47/36/365001},
	author = {Gubbiotti, G. and Nguyen, H. T. and Hiramatsu, R. and Tacchi, S. and Madami, M. and Cottam, M. G. and Ono, T.}
}
