S. de Jong, R. Kukreja, C. Trabant, N. Pontius, C. F. Chang, T. Kachel, Martin Beye, Nomi Sorgenfrei, C. H. Back, B. Braeuer, W. F. Schlotter, J. J. Turner, O. Krupin, M. Doehler, D. Zhu, M. A. Hossain, A. O. Scherz, D. Fausti, F. Novelli, M. Esposito, W. S. Lee, Y. D. Chuang, D. H. Lu, R. G. Moore, M. Yi, M. Trigo, P. Kirchmann, L. Pathey, M. S. Golden, Marcel Buchholz, P. Metcalf, F. Parmigiani, W. Wurth, Alexander Föhlisch, Christian Schuessler-Langeheine, H. A. Duerr
- As the oldest known magnetic material, magnetite (Fe3O4) has fascinated mankind for millennia. As the first oxide in which a relationship between electrical conductivity and fluctuating/localized electronic order was shown(1), magnetite represents a model system for understanding correlated oxides in general. Nevertheless, the exact mechanism of the insulator-metal, or Verwey, transition has long remained inaccessible(2-8). Recently, three- Fe- site lattice distortions called trimeronswere identified as the characteristic building blocks of the low-temperature insulating electronically ordered phase(9). Here we investigate the Verwey transition with pump- probe X- ray diffraction and optical reflectivity techniques, and show how trimerons become mobile across the insulator-metal transition. We find this to be a two- step process. After an initial 300 fs destruction of individual trimerons, phase separation occurs on a 1.5 +/- 0.2 ps timescale to yield residual insulating and metallic regions. This work establishes the speed limit forAs the oldest known magnetic material, magnetite (Fe3O4) has fascinated mankind for millennia. As the first oxide in which a relationship between electrical conductivity and fluctuating/localized electronic order was shown(1), magnetite represents a model system for understanding correlated oxides in general. Nevertheless, the exact mechanism of the insulator-metal, or Verwey, transition has long remained inaccessible(2-8). Recently, three- Fe- site lattice distortions called trimeronswere identified as the characteristic building blocks of the low-temperature insulating electronically ordered phase(9). Here we investigate the Verwey transition with pump- probe X- ray diffraction and optical reflectivity techniques, and show how trimerons become mobile across the insulator-metal transition. We find this to be a two- step process. After an initial 300 fs destruction of individual trimerons, phase separation occurs on a 1.5 +/- 0.2 ps timescale to yield residual insulating and metallic regions. This work establishes the speed limit for switching in future oxide electronics(10).…
MetadatenVerfasserangaben: | S. de Jong, R. Kukreja, C. Trabant, N. Pontius, C. F. Chang, T. Kachel, Martin BeyeORCiDGND, Nomi SorgenfreiORCiDGND, C. H. Back, B. Braeuer, W. F. Schlotter, J. J. Turner, O. Krupin, M. Doehler, D. Zhu, M. A. Hossain, A. O. Scherz, D. Fausti, F. Novelli, M. Esposito, W. S. Lee, Y. D. Chuang, D. H. Lu, R. G. Moore, M. Yi, M. Trigo, P. Kirchmann, L. Pathey, M. S. Golden, Marcel Buchholz, P. Metcalf, F. Parmigiani, W. Wurth, Alexander FöhlischORCiDGND, Christian Schuessler-LangeheineORCiD, H. A. Duerr |
---|
DOI: | https://doi.org/10.1038/NMAT3718 |
---|
ISSN: | 1476-1122 |
---|
ISSN: | 1476-4660 |
---|
Titel des übergeordneten Werks (Englisch): | Nature materials |
---|
Verlag: | Nature Publ. Group |
---|
Verlagsort: | London |
---|
Publikationstyp: | Wissenschaftlicher Artikel |
---|
Sprache: | Englisch |
---|
Jahr der Erstveröffentlichung: | 2013 |
---|
Erscheinungsjahr: | 2013 |
---|
Datum der Freischaltung: | 26.03.2017 |
---|
Band: | 12 |
---|
Ausgabe: | 10 |
---|
Seitenanzahl: | 5 |
---|
Erste Seite: | 882 |
---|
Letzte Seite: | 886 |
---|
Fördernde Institution: | Stanford Institute for Materials and Energy Sciences (SIMES)
[DE-AC02-76SF00515]; LCLS by the US Department of Energy, Office of
Basic Energy Sciences; Stanford University through the Stanford
Institute for Materials Energy Sciences (SIMES); Lawrence Berkeley
National Laboratory (LBNL) [DE-AC02-05CH11231]; University of Hamburg
through the BMBF priority programme FSP [301]; Center for Free Electron
Laser Science (CFEL); FOM/NWO; Helmholtz Virtual Institute Dynamic
Pathways in Multidimensional Landscapes; DFG [SFB 608]; BMBF [05K10PK2];
SFB [925]; European Union Seventh Framework Programme [280555]; Italian
Ministry of University and Research [FIRB-RBAP045JF2, FIRB-RBAP06AWK3] |
---|
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
---|
Peer Review: | Referiert |
---|