Beitrag in einem Tagungsband
Surface Topology and Electronic Structure of Layered Strontium Ruthenates
Details zur Publikation
Autor(inn)en: | Bienert, R.; Klinke, M.; Waelsch, M.; Mietke, S.; Peng, J.; Mao, Z.; Matzdorf, R. |
Herausgeber: | Deutsche Physikalische Gesellschaft |
Verlag: | DPG |
Verlagsort / Veröffentlichungsort: | Bad Honnef |
Publikationsjahr: | 2012 |
Seitenbereich: | TT 45.61 |
Buchtitel: | Verhandlungen der Deutschen Physikalischen Gesellschaft |
Jahrgang/Band : | Berlin 2012 |
Zusammenfassung, Abstract
In complex materials the interplay of properties like crystal structure, electronic structure and magnetism results in very interesting physical phenomena. The Ruddlesden-Popper series of layered Strontium Ruthenates Srn+1RunO3n+1 describes one class of these materials.The double and triple layer systems behave like a Fermi liquid upto the transition temperature of 15 K and 24 K, respectively. In both compounds the local density of states (LDOS) shows a peak within the dip-like feature around the Fermi energy EF. Using low-temperature (LT) STM and STS we studied the temperature dependence of the LDOS in the range from 4.7 to 35 K. By increasing the temperature the peak within the dip in the LDOS at EF is only affected by thermal broadening.The surface unit cell of the Strontium Ruthenates exhibits a c(2×2) super structure, which is stable from 4.7 K up to room temperature as shown by our atomically resolved LT STM images and room temperature LEED experiments.
In complex materials the interplay of properties like crystal structure, electronic structure and magnetism results in very interesting physical phenomena. The Ruddlesden-Popper series of layered Strontium Ruthenates Srn+1RunO3n+1 describes one class of these materials.The double and triple layer systems behave like a Fermi liquid upto the transition temperature of 15 K and 24 K, respectively. In both compounds the local density of states (LDOS) shows a peak within the dip-like feature around the Fermi energy EF. Using low-temperature (LT) STM and STS we studied the temperature dependence of the LDOS in the range from 4.7 to 35 K. By increasing the temperature the peak within the dip in the LDOS at EF is only affected by thermal broadening.The surface unit cell of the Strontium Ruthenates exhibits a c(2×2) super structure, which is stable from 4.7 K up to room temperature as shown by our atomically resolved LT STM images and room temperature LEED experiments.
