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73 papers · 1 filter
The role of striction at magnetic and structural transitions in iron-pnictides
Victor Barzykin, Lev P. Gor'kov
We discuss the role of striction in the intertwined magnetic and structural phase transitions in the underdoped iron-pnictides. The magneto-elastic coupling to acoustic modes is th…
3:1 magnetization plateau and suppression of ferroelectric polarization in an Ising chain multiferroic
Y. J. Jo, Seongsu Lee, E. S. Choi +6
Ferroelectric Ising chain magnet CaCoMnO (0.96) was studied in magnetic fields up to 33 T. Magnetization and neutron scattering measurements reveal suc…
Flux quanta driven by high-density currents in low-impurity V3Si and LuNi2B2C: free flux flow and flux-core size effect
A. A. Gapud, S. Moraes, R. P. Khadka +6
High density direct currents (DC) are used to drive flux quanta via the Lorentz force towards a highly ordered "free flux flow" (FFF) dynamic state, made possible by the weak-pinni…
Multiphoton coherent manipulation in large-spin qubits
S. Bertaina, L. Chen, N. Groll +3
Large spin Mn2+ ions (S=5/2) diluted in a non-magnetic MgO matrix of high crystalline symmetry are used to realize a six level system that can be operated by means of multi-photon…
Comment on "Influence of Dzyaloshinskii-Moriya Exchange Interaction on Quantum Phase Interference of Spins"
E. del Barco, S. Hill, D. N. Hendrickson
In a recent Letter [1], Wernsdorfer et al. report an experimental study of a Mn12 molecular wheel which shows essentially identical behavior to the Mn12 wheel studied by Ramsey et…
Cascade of magnetic-field-induced quantum phase transitions in a spin triangular-lattice antiferromagnet
N. A. Fortune, S. T. Hannahs, Y. Yoshida +4
We report magnetocaloric and magnetic-torque evidence that in CsCuBr -- a geometrically frustrated Heisenberg triangular-lattice antiferromagnet -- quantum fluc…