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Mostrando ítems 161-170 de 851
Manipulação coerente de spins em pontos quânticos semicondutores
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em FísicaCiências Exatas e da TerraUFU, 2016)
PARTICLE-SPIN COUPLING IN A CHAOTIC SYSTEM - LOCALIZATION-DELOCALIZATION IN THE HUSIMI DISTRIBUTIONS
(Editions PhysiqueLes Ulis CedexFrança, 1991)
Chiral symmetry and scale invariance breaking in spin chains
(The American Institute of Physics, 2020)
The effects of the Dzyaloshinsky-Moriya interaction on finite size one-dimensional (1D) magnetic chains are investigated as a function of their length. The magnetic configuration the system adopts for varying boundary ...
NMR dipolar constants of motion in liquid crystals: Jeener-Broekaert, double quantum coherence experiments and numerical calculation on a 10-spin cluster
(Elsevier, 2009-12)
Two proton quasi-equilibrium states were previously observed in nematic liquid crystals, namely the S and W quasi-invariants. Even though the experimental evidence suggested that they originate in a partition of the spin ...
Frustrated bilayer spin one XY model on the honeycomb lattice
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE FÍSICAUFMG, 2019)
Comportamento multicrítico no modelo de Heisenberg frustrado: transições de fases clássica e quântica
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Física - PPGF, 2011-09-01)
In this work we study the critical behavior of systems described by the Anysotropic- Heisenberg model of spin 1/2 with competitive interactions (J1-J2 Model) on planes, and interplane nearest-neighbor interactions. We ...
Numerical simulation of a controlled-controlled-not (CCN) quantum gate in a chain of three interacting nuclear spins system
(2006)
We present a study of a quantum controlled-controlled-not gate, implemented in a chain of three nuclear spins weakly Ising interacting between all of them, that is, taking into account first and second neighbour spin ...
Zeeman splitting and spin dynamics tuning by exciton charging in two-dimensional systems
(Amer Physical SocCollege PkEUA, 2011)
Magnetization plateaus and Luttinger liquid behavior in XXZ chains with superlattice structure
(American Physical SocCollege PkEUA, 2002)
Loschmidt echo in many-spin systems: A quest for intrinsic decoherence and emergent irreversibility
(IOP Publishing, 2017-02-13)
If a magnetic polarization excess is locally injected in a crystal of interacting spins in thermal equilibrium, this 'excitation' would spread as consequence of spin-spin interactions. Such an apparently irreversible process ...