English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Suppression of Jahn-Teller distortion and insulator-to-metal transition in LaMnO3 at high pressures

MPS-Authors
/persons/resource/persons126736

Loa,  I.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126506

Adler,  P.
Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126871

Syassen,  K.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126841

Schwarz,  U.
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126644

Hanfland,  M.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Loa, I., Adler, P., Grzechnik, A., Syassen, K., Schwarz, U., Hanfland, M., et al. (2002). Suppression of Jahn-Teller distortion and insulator-to-metal transition in LaMnO3 at high pressures. High Pressure Research, 22(2 Sp. Iss. SI), 325-329. doi:10.1080/08957950212777.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-3159-F
Abstract
Structural, vibrational and electronic properties of LaMnO3 under pressures up to 38 GPa have been studied by synchrotron X-ray powder diffraction, Raman spectroscopy, optical reflectivity, and transport measurements. The cooperative Jahn- Teller distortion of the MnO6 octahedra of the perovskite-type structure is continuously suppressed with increasing pressure, a process which appears completed at similar to20 GPa. The system remains insulating to 32 GPa, where an insulator-metal transition is observed. This transition is attributed to strengthened Mn-O-Mn interactions due to the increasing overlap of atomic orbitals.