Structural phase transition and antiferromagnetic transition of Tb 3 RuO 7

Antiferromagnetic ordering and structural phase transition in Ba2Fe2As2 with Sn incorporated from the growth flux

Y. Su,1,* P. Link,2 A. Schneidewind,3 Th. Wolf,4 P. Adelmann,4 Y. Xiao,5 M. Meven,2 R. Mittal,1,6 M. Rotter,7 D. Johrendt,7 Th. Brueckel,1,5 and M. Loewenhaupt3 1Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, Outstation at FRM II, Lichtenbergstrasse 1, D-85747 Garching, Germany 2FRM II, Technische Universitaet Muenchen, Lichtenbergstrasse 1, D-85747 Garching, Germany 3Insti...

Antiferromagnetic phase transition in a nonequilibrium lattice of Rydberg atoms

We study a driven-dissipative system of atoms in the presence of laser excitation to a Rydberg state and spontaneous emission. The atoms interact via the blockade effect, whereby an atom in the Rydberg state shifts the Rydberg level of neighboring atoms. We use mean-field theory to study how the Rydberg population varies in space. As the laser frequency changes, there is a continuous transition...

Quantum phase transition in an antiferromagnetic spinor Bose-Einstein condensate.

We have experimentally observed the dynamics of an antiferromagnetic sodium Bose-Einstein condensate quenched through a quantum phase transition. Using an off-resonant microwave field coupling the F = 1 and F = 2 atomic hyperfine levels, we rapidly switched the quadratic energy shift q from positive to negative values. At q = 0, the system undergoes a transition from a polar to antiferromagneti...

Structural Phase Transition Accompanied by Metal - Insulator Transition in PrRu4P12

A structural phase transition has been found using electron diffraction technique in PrRu4P12 accompanied by a metal insulator (M I) transition (TMI = 60K). Weak superlattice spots appeared at (H, K, L) (H + K + L = 2n + 1; n is an integer) position at a temperature of T = 12 K and 40 K. Above T = 70 K, the spots completely vanished. The space group of the low temperature phase is probably Pm 3...

Phase Transition for 3 - SAT