File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Jahn-Teller effect and stability of the charge-ordered state in La1-xCaxMnO3 (0.5 <= x <= 0.9) manganites

TitleJahn-Teller effect and stability of the charge-ordered state in La1-xCaxMnO3 (0.5 <= x <= 0.9) manganites
Authors
KeywordsPhysics
Issue Date2002
PublisherE D P Sciences.
Citation
Europhysics Letters, 2002, v. 60 n. 5, p. 670-676 How to Cite?
AbstractThe longitudinal ultrasonic sound velocity and attenuation, the resistivity, and lattice parameters were studied as a function of temperature from 30K to 300K in La1−x CaxMnO3 (0.5 ≤ x ≤ 0.9). For all the samples, a dramatic stiffening of the sound velocity belowthe charge ordering transition temperature TCO was directly driven by distinct changes of the lattice parameters due to the formation of long-range ordering of Jahn-Teller– distorted MnO6 octahedra. The relative change of the sound velocity (ΔV/V) below TCO depends on the Ca concentration x and reaches the maximum at x = 0.75, implying that the effective strength of the electron-lattice interaction with the Jahn-Teller distortion is the strongest at x = 0.75 and hence the charge-ordered state is mostly stabilized near x = 0.75 and insensitive to the application of a magnetic field, which is supported by the charge transport properties under high magnetic fields up to 14T
Persistent Identifierhttp://hdl.handle.net/10722/42479
ISSN
2015 Impact Factor: 1.963
2015 SCImago Journal Rankings: 0.565
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, XGen_HK
dc.contributor.authorZheng, RKen_HK
dc.contributor.authorLi, Gen_HK
dc.contributor.authorZhou, HDen_HK
dc.contributor.authorHuang, RXen_HK
dc.contributor.authorXie, JQen_HK
dc.contributor.authorWang, Zen_HK
dc.date.accessioned2007-01-29T08:50:51Z-
dc.date.available2007-01-29T08:50:51Z-
dc.date.issued2002en_HK
dc.identifier.citationEurophysics Letters, 2002, v. 60 n. 5, p. 670-676en_HK
dc.identifier.issn0295-5075en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42479-
dc.description.abstractThe longitudinal ultrasonic sound velocity and attenuation, the resistivity, and lattice parameters were studied as a function of temperature from 30K to 300K in La1−x CaxMnO3 (0.5 ≤ x ≤ 0.9). For all the samples, a dramatic stiffening of the sound velocity belowthe charge ordering transition temperature TCO was directly driven by distinct changes of the lattice parameters due to the formation of long-range ordering of Jahn-Teller– distorted MnO6 octahedra. The relative change of the sound velocity (ΔV/V) below TCO depends on the Ca concentration x and reaches the maximum at x = 0.75, implying that the effective strength of the electron-lattice interaction with the Jahn-Teller distortion is the strongest at x = 0.75 and hence the charge-ordered state is mostly stabilized near x = 0.75 and insensitive to the application of a magnetic field, which is supported by the charge transport properties under high magnetic fields up to 14Ten_HK
dc.format.extent298414 bytes-
dc.format.extent28672 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherE D P Sciences.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsEurophysics Letters. Copyright © E D P Sciences.en_HK
dc.rightsThe original publication is available at www.edpsciences.org/agroen_HK
dc.subjectPhysicsen_HK
dc.titleJahn-Teller effect and stability of the charge-ordered state in La1-xCaxMnO3 (0.5 <= x <= 0.9) manganitesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0295-5075&volume=60&issue=5&spage=670&epage=676&date=2002&atitle=Jahn-Teller+effect+and+stability+of+the+charge-ordered+state+in+La1-xCaxMnO3+(0.5+<=+x+<=+0.9)+manganitesen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1209/epl/i2002-00361-2en_HK
dc.identifier.scopuseid_2-s2.0-0036899670-
dc.identifier.hkuros76753-
dc.identifier.isiWOS:000179386300004-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats