Bibliographic Details
| Title: |
Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices |
| Authors: |
Boris, A. V., Matiks, Y., Benckiser, E., Frano, A., Popovich, P., Hinkov, V., Wochner, P., Castro-Colin, M., Detemple, E., Malik, V. K., Bernhard, C., Prokscha, T., Suter, A., Salman, Z., Morenzoni, E., Cristiani, G., Habermeier, H. -U., Keimer, B. |
| Source: |
Science 20 May 2011: Vol. 332 no. 6032 pp. 937-940 |
| Publication Year: |
2011 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| More Details: |
The competition between collective quantum phases in materials with strongly correlated electrons depends sensitively on the dimensionality of the electron system, which is difficult to control by standard solid-state chemistry. We have fabricated superlattices of the paramagnetic metal LaNiO3 and the wide-gap insulator LaAlO3 with atomically precise layer sequences. Using optical ellipsometry and low-energy muon spin rotation, superlattices with LaNiO3 as thin as two unit cells are shown to undergo a sequence of collective metalinsulator and antiferromagnetic transitions as a function of decreasing temperature, whereas samples with thicker LaNiO3 layers remain metallic and paramagnetic at all temperatures. Metal-oxide superlattices thus allow control of the dimensionality and collective phase behavior of correlated-electron systems. |
| Document Type: |
Working Paper |
| DOI: |
10.1126/science.1202647 |
| Access URL: |
http://arxiv.org/abs/1111.3819 |
| Accession Number: |
edsarx.1111.3819 |
| Database: |
arXiv |
