Large magnetic field instabilities induced by magnetic dipole transitions

Magnetic Field Induced Phase Transitions in YBa2Cu4O8

The c-axis resistivity measurements in YBa2Cu4O8 from Hussey et al. for magnetic field orientations along the c-axis as well as within the ab-plane are analyzed and interpreted using the scaling theory for static and dynamic classical critical phenomena. We identify a superconductor to normal conductor transition for both field orientations as well as a normal conductor to insulator transition ...

Ferrocholesteric–ferronematic transitions induced by shear flow and magnetic field

We study the unwinding of the ferrocholesteric helical structure induced by a combined action of a magnetic field and a shear flow. Both influences are able to induce the ferrocholesteric-ferronematic transition independently; however, the differences between the magnetic field orientation and the flow alignment direction lead to a competition between magnetic and hydrodynamic mechanisms of inf...

Insulator–metal transitions in Pr0.7Ca0.3MnO3 induced by a magnetic field

Two phase transitions induced by a magnetic field in graphite.

Different instabilities have been speculated for a three-dimensional electron gas confined to its lowest Landau level. The phase transition induced in graphite by a strong magnetic field, and believed to be a charge density wave, is the only experimentally established case of such instabilities. Studying the magnetoresistance in graphite for the first time up to 80 T, we find that the magnetic ...

Magnetic dipole transitions in the hydrogen molecule

In homonuclear molecules, such as H2, the electric dipole transitions are strongly forbidden, and the transitions between rovibrational states are of the electric quadrupole type. We show however, that magnetic dipole transitions also take place, although are significantly weaker. We evaluate the probabilities of such transitions between several lowest rotational states and compare them with th...