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Magnetic order, metamagnetic transitions, and low-temperature spin freezing in Ca2Co2O6: an NMR study
Magnetic order metamagnetic transitions low-temperature spin
2010/11/18
We report on a 59Co NMR investigation of the trigonal cobaltate Ca3Co2O6 carried out on a single crystal, providing precise determinations of the electric field gradient and chemical shift tensors, an...
Zero-Temperature Freezing in Three-Dimensional Kinetic Ising Model
Zero-Temperature Freezing Three-Dimensional Kinetic Ising Model
2010/11/22
We investigate the long-time properties of the Ising-Glauber model on a periodic cubic lattice
after a quench to zero temperature. In contrast to the conventional picture from phase-ordering
kinetic...
Freezing Light via hot gases
Freezing Light hot gases
2010/10/15
We prove that it is possible to freeze a light pulse (i.e., to bring it to a full stop) or even to make its group velocity negative in a coherently driven Doppler broadened atomic medium via electroma...