Carrier Density Collapse and Colossal Magnetoresistance in Doped Manganites

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

5 pages, REVTeX 3.0, 3 EPS-figures embedded via epsf. Added - inset in Fig. 2; Ref.[32]; footnotes [29], [30], [33]

Scientific paper

10.1103/PhysRevLett.82.141

A novel ferromagnetic transition, accompanied by carrier density collapse, is found in doped charge-transfer insulators with strong electron-phonon coupling. The transition is driven by an exchange interaction of polaronic carriers with localized spins; the strength of the interaction determines whether the transition is first or second order. A giant drop in the number of current carriers during the transition, which is a consequence of bound pairs formation in the paramagnetic phase close to the transition, is extremely sensitive to an external magnetic field. This carrier density collapse describes the resistivity peak and the colossal magnetoresistance of doped manganites.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Carrier Density Collapse and Colossal Magnetoresistance in Doped Manganites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Carrier Density Collapse and Colossal Magnetoresistance in Doped Manganites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carrier Density Collapse and Colossal Magnetoresistance in Doped Manganites will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-139898

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.