E. Ansaldo

activity

20032006

collaborators

Showing 2003Show all

5 papers · 1 filter

cond-mat.str-el2003

A common behavior of thermoelectric layered cobaltites: incommensurate spin density wave states in [Ca $_{2}$ Co $_{4/3}$ Cu $_{2/3}$ O $_{4}$ ] $_{0.62}$ [CoO $_{2}$ ] and [Ca $_{2}$ CoO $_{3}$ ] $_{0.62}$ [CoO $_{2}$ ]

J. Sugiyama, J. H. Brewer, E. J. Ansaldo +6

Magnetism of a misfit layered cobaltite [Ca $_{2}$ Co $_{4/3}$ Cu $_{2/3}$ O $_{4}$ ] $_{x}^{RS}$ [CoO $_{2}$ ] ( $x \sim$ 0.62, RS denotes a rocksalt-type block) was investigated by a positive muo…

cond-mat.str-el2003

Electron correlation in the two-dimensional triangle lattice of Na $_{x}$ CoO $_{2}$

J. Sugiyama, J. H. Brewer, E. J. Ansaldo +4

Magnetism of layered cobaltites Na $_{x}$ CoO $_{2}$ with $x$ = 0.6 and 0.9 has been investigated by a positive muon spin rotation and relaxation ( $μ^{+}$ SR) spectroscopy together with magn…

cond-mat.str-el2003

Dome-shaped magnetic phase diagram of thermoelectric layered cobaltites

J. Sugiyama, J. H. Brewer, E. J. Ansaldo +7

Using muon spin spectroscopy we have found that, for both Na $_{x}$ CoO $_{2}$ (0.6 $\leq x \leq$ 0.9) and 3- and 4-layer cobaltites, a common low temperature magnetic state (which in som…

cond-mat.str-el2003

Hidden magnetic transitions in thermoelectric layered cobaltite, [Ca $_{2}$ CoO $_{3}$ ] $_{0.62}$ [CoO $_{2}$ ]

J. Sugiyama, J. H. Brewer, E. J. Ansaldo +5

A positive muon spin rotation and relaxation ( $μ^{+}$ SR) experiment on [Ca $_{2}$ CoO $_{3}$ ] $_{0.62}$ [CoO $_{2}$ ], ({\sl i.e.}, Ca $_{3}$ Co $_{4}$ O $_{9}$ , a layered thermoelectric cobaltite) indicate…

cond-mat.str-el2003

Static magnetic order in Na $_{0.75}$ CoO $_{2}$ detected by muon spin rotation and relaxation

Jun Sugiyama, Hiroshi Itahara, Jess H. Brewer +4

The nature of the magnetic transition of the Na-rich thermoelectric Na $_{0.75}$ CoO $_{2}$ at 22K was studied by positive muon-spin-rotation and relaxation ( $μ^{+}$ SR) spectroscopy, usin…

A common behavior of thermoelectric layered cobaltites: incommensurate spin density wave states in [Ca2​Co4/3​Cu2/3​O4​]0.62​[CoO2​] and [Ca2​CoO3​]0.62​[CoO2​]

Electron correlation in the two-dimensional triangle lattice of Nax​CoO2​

Dome-shaped magnetic phase diagram of thermoelectric layered cobaltites

Hidden magnetic transitions in thermoelectric layered cobaltite, [Ca2​CoO3​]0.62​[CoO2​]

Static magnetic order in Na0.75​CoO2​ detected by muon spin rotation and relaxation

A common behavior of thermoelectric layered cobaltites: incommensurate spin density wave states in [Ca $_{2}$ Co $_{4/3}$ Cu $_{2/3}$ O $_{4}$ ] $_{0.62}$ [CoO $_{2}$ ] and [Ca $_{2}$ CoO $_{3}$ ] $_{0.62}$ [CoO $_{2}$ ]

Electron correlation in the two-dimensional triangle lattice of Na $_{x}$ CoO $_{2}$

Hidden magnetic transitions in thermoelectric layered cobaltite, [Ca $_{2}$ CoO $_{3}$ ] $_{0.62}$ [CoO $_{2}$ ]

Static magnetic order in Na $_{0.75}$ CoO $_{2}$ detected by muon spin rotation and relaxation