Pressure induced quantum critical point and non-fermi-liquid behavior in BaVS3
- The phase diagram of BaVS3 is studied under pressure using resistivity measurements. The temperature of the metal to nonmagnetic Mott insulator transition decreases under pressure, and vanishes at the quantum critical point pcr=20kbar. We find two kinds of anomalous conducting states. The high-pressure metallic phase is a non-Fermi liquid described by Δρ∝Tn where n=1.2–1.3 at 1<T<40K. At p<pcr, the transition is preceded by a wide precursor region with critically increasing resistivity which we ascribe to the opening of a soft Coulomb gap.
| Author: | L. Forró, R. Gaál, H. Berger, P. Fazekas, K. Penc, István KézsmárkiORCiDGND, G. Mihály |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-442278 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/44227 |
| ISSN: | 0031-9007OPAC |
| ISSN: | 1079-7114OPAC |
| Parent Title (English): | Physical Review Letters |
| Publisher: | American Physical Society (APS) |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2000 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2018/11/29 |
| Volume: | 85 |
| Issue: | 9 |
| First Page: | 1938 |
| Last Page: | 1941 |
| DOI: | https://doi.org/10.1103/physrevlett.85.1938 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik V | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  Deutsches Urheberrecht |
