Manipulating coincident charge and spin order with pressure and field in adoped manganite - art. no. 094416

The onset of charge order occurs simultaneously with the transition from fe rromagnetic metal to antiferromagnetic insulator in Nd0.05Sr0.5MnO3. The ap plication of hydrostatic pressures P greater than or equal to 15 kbar remov es the degeneracy, as recorded in both the electrical resistivity and the m agnetic susceptibility. The charge-ordered state moves swiftly to higher te mperature with increasing pressure at the expense of the ferromagnetic char ge liquid, dominating the energetics. An applied magnetic field H suppresse s both the pressure-split charge order and the antiferromagnetism, but char ge order preferentially, so by H = 2 T the two transitions are reunited. Fi nally, depinning domains of charge order with electric field deep in the an tiferromagnetic insulator permits us to monitor pressure-induced changes in the charge (poly)crystal.