Giant Peak of the 1/f Noise at the Metal-Insulator Transitions in Low-Tc CMR Manganites: Evidence of the Percolation Threshold at Tc
| dc.creator | Podzorov, V. | |
| dc.creator | Uehara, M. | |
| dc.creator | Gershenson, M. E. | |
| dc.creator | Cheong, S-W. | |
| dc.date | 1999-12-04 | |
| dc.date.accessioned | 2026-07-07T03:15:24Z | |
| dc.date.available | 2026-07-07T03:15:24Z | |
| dc.description | We observed a dramatic peak in the 1/f noise at the metal-insulator transition (MIT) in low-Tc manganites. This many-orders-of-magnitude noise enhancement is observed for both polycrystalline and single-crystal samples of La{5/8-y}Pr{y}Ca{3/8}MnO{3} (y=0.35-0.4) in zero magnetic field and Pr{1-x}Ca{x}MnO{3} (x=0.35-0.5) in magnetic field. This observation strongly suggests that the microscopic phase separation in the low-Tc manganites causes formation of a percolation network, and that the observed MIT is a percolation threshold. | |
| dc.description | 10 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9912064 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9912064 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/30012 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Giant Peak of the 1/f Noise at the Metal-Insulator Transitions in Low-Tc CMR Manganites: Evidence of the Percolation Threshold at Tc | |
| dc.type | text |