Abstract
Optical lithography is used to fabricate LPCMO wires starting from a single (La5/8-0.3Pr0.3)Ca3/8MnO3 (LPCMO) film epitaxially grown on a LaAlO3(100) substrate. As the width of the wires is decreased, the resistivity of the LPCMO wires exhibits giant and ultrasharp steps upon varying temperature and magnetic field in the vicinity of the metal-insulator transition. The origin of the ultrasharp transitions is attributed to the effect of spatial confinement on the percolative transport in manganites.
| Original language | English |
|---|---|
| Article number | 167201 |
| Journal | Physical Review Letters |
| Volume | 97 |
| Issue number | 16 |
| DOIs | |
| State | Published - 2006 |