Document Detail


Pressure effect on the structural transition and suppression of the high-spin state in the triple-layer t^{'}-la_{4}ni_{3}o_{8}.
MedLine Citation:
PMID:  23003979     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We report a comprehensive high-pressure study on the triple-layer T^{'}-La_{4}Ni_{3}O_{8} with a suite of experimental probes, including structure determination, magnetic, and transport properties up to 50 GPa. Consistent with a recent ab inito calculation, application of hydrostatic pressure suppresses an insulator-metal spin-state transition at P_{c}≈6  GPa. However, a low-spin metallic phase does not emerge after the high-spin state is suppressed to the lowest temperature. For P>20  GPa, the ambient T^{'} structure transforms gradually to a T^{†}-type structure, which involves a structural reconstruction from fluorite La-O_{2}-La blocks under low pressures to rock-salt LaO-LaO blocks under high pressures. Absence of the metallic phase under pressure has been discussed in terms of local displacements of O^{2-} ions in the fluorite block under pressure before a global T^{†} phase is established.
Authors:
J-G Cheng; J-S Zhou; J B Goodenough; H D Zhou; K Matsubayashi; Y Uwatoko; P P Kong; C Q Jin; W G Yang; G Y Shen
Related Documents :
3933979 - Brain metabolism in deep controlled hypotension in neurosurgical patients.
10963629 - Theoretical simulation of oxygen transport to brain by networks of microvessels: effect...
6241889 - Aortic pressure, substrate utilization and protein synthesis.
23814039 - Modularization and epistatic hierarchy determine homeostatic actions of multiple blood ...
21876279 - Changes in gluteal pressure and pelvic inclination angles after continuous cross-legged...
21974179 - Statistical analysis of a characteristic shock formation distance for high-amplitude no...
6754259 - Pulmonary vascular resistance correlates in intact normal and abnormal canine lungs.
21930599 - Arterial pressure oscillations are not associated with muscle sympathetic nerve activit...
2632749 - Role of corticosteroids in the diurnal rhythm of blood pressure.
Publication Detail:
Type:  Journal Article     Date:  2012-06-08
Journal Detail:
Title:  Physical review letters     Volume:  108     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-09-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  236403     Citation Subset:  IM    
Affiliation:
Materials Science and Engineering Program/Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Accurate and efficient method for many-body van der waals interactions.
Next Document:  Spin transistor action from hidden onsager reciprocity.