Elastic and magnetic properties on field-induced Metal-Insulator transition of bilayer manganese oxide $(La_{1-z} Pr_z)_{1.2} Sr_{1.8} Mn_2 O_7$ ($z$=0.6)

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dc.creatorNakanishi, Y.
dc.creatorShimomura, K.
dc.creatorKumagai, T.
dc.creatorMatsukawa, M.
dc.creatorYoshizawa, M.
dc.creatorApostu, M.
dc.creatorSuryanarayanan, R.
dc.creatorRevcolevschi, A.
dc.creatorNakamura, S.
dc.date2006-09-20
dc.date.accessioned2026-07-07T07:23:37Z
dc.date.available2026-07-07T07:23:37Z
dc.descriptionThe elastic and magnetic properties of a single crystal of 327 bilayer manganese oxide $(La_{1-z} Pr_z)_{1.2} Sr_{1.8} Mn_2 O_7$ with $z$=0.6 have been investigated by ultrasonic and high-field magnetization measurements. A distinct elastic anomaly was observed at low temperatures and in high magnetic fields when crossing the phase boundary. A pronounced elastic softening as a function of magnetic field ($H$) appears across the boundary of the low-temperature magnetic phase below around 40 K, accompanied by a distinct hysteresis. In the high field region, however, these elastic constants exhibit an increase with increasing a magnetic field in the high-field region. The high-field magnetization measurement characterizing the magnetic state clarified a strong connection between elastic strains and magnetic moments. The new metamagnetic transition was found in the high-field region above 40 K, accompanied with no hysteresis. The present results of elastic constants are discussed in terms of a coupling effect between elastic strains associated with sound waves and relevant magnetic moments, and relevant conduction bands. They are explained reasonably in terms of a strong coupling between elastic strains and magnetic susceptibility $chi$$_{m}$=$partial$$M$/$partial$$H$.
dc.description9 pages, 14 figures, regular paper
dc.identifierhttps://arxiv.org/abs/cond-mat/0609498
dc.identifierhttp://arxiv.org/abs/cond-mat/0609498
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/116048
dc.subjectStrongly Correlated Electrons
dc.titleElastic and magnetic properties on field-induced Metal-Insulator transition of bilayer manganese oxide $(La_{1-z} Pr_z)_{1.2} Sr_{1.8} Mn_2 O_7$ ($z$=0.6)
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