Electronic structure of the double-exchange ferromagnet<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.825</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.175</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">MnO</mml:mi></mml:mrow><mml:mro

Takenaka, K.; Sawaki, Yasuhiko; Shiozaki, R.; Sugai, S.

doi:10.1103/physrevb.62.13864

Cited by 42 publications

(37 citation statements)

References 30 publications

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“…The magneto-optical properties of our high-quality LSMO films have been studied as a function of the thickness. Combining these results with previous spectroscopic measurements [3,4], the nature of the optical transitions can be predicted.Films of thickness ranging from 10 to 60 nm were deposited on SrTiO 3 (1 0 0) substrate by pulsed laser deposition at a reduced substrate temperature of 630 C under a low oxygen/ozone pressure of 5 Â 10 À3 mbar. For the optimized O 3 concentration, no damping was observed in the intensity of the RHEED specular beam, and moreover, the 2D step edge growth mode was confirmed by the streaky RHEED patterns.…”

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confidence: 76%

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confidence: 76%

“…However, it is of importance to understand more deeply the complex interplay between a strained structure and its associated magnetism. The wavelength dependence of magneto-optical effects provides valuable information about the electronic structure, namely charge-transfer transitions [3]. The magneto-optical properties of our high-quality LSMO films have been studied as a function of the thickness.…”

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confidence: 99%

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Magneto-optical spectroscopy of strained La2/3Sr1/3MnO3 thin films grown by “laser MBE”

Koubàa

Haghiri‐Gosnet

Renard

et al. 2004

Journal of Magnetism and Magnetic Materials

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confidence: 76%

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confidence: 76%

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confidence: 99%

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Magneto-optical spectroscopy of strained La2/3Sr1/3MnO3 thin films grown by “laser MBE”

Koubàa

Haghiri‐Gosnet

Renard

et al. 2004

Journal of Magnetism and Magnetic Materials

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“…The features in the high-energy region (above 1.8 eV) in Figure 1b arise from transitions between O2p and Mn 3d as well as between lower and upper Hund's rule split bands. 29,32 Owing to the Kramers-Kronig transformation, the pre-eminence of the spectroscopic ellipsometry approach allows one to measure the charge transfer accurately using the optical f-sum rule. 22,23 As the temperature decreases, an increase of SW 1 by as much as~33% below T max is accompanied by a decrease of SW 2 spanning an energy range up to 6 eV ( Figure 1f).…”

Section: Electronic Propertiesmentioning

confidence: 99%

Unraveling how electronic and spin structures control macroscopic properties of manganite ultra-thin films

et al. 2015

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Perovskite manganites exhibit fascinating transport and magnetic properties, essential for fundamental research and applications. With the development of thin film technologies, more exotic properties have been observed in doped-manganites over a wide range of temperature. Unraveling the interplay of spin, charge and orbital degrees of freedom that drives exotic, macroscopic properties is therefore crucial for the understanding of strongly correlated electron systems. Here, using a combination of transport, spectroscopic ellipsometry, X-ray absorption spectroscopy and X-ray magnetic circular dichroism, we observe two concomitant electronic and magnetic phases (insulating paramagnetic phase for T4195 K and insulating cantedferromagnetic for To140 K) with an intermediate metal-like state in ultra-thin La 0.7 Sr 0.3 MnO 3 (LSMO) film on DyScO 3 substrate. Surprisingly, the O2p-Mn3d hybridization strength reduces with decreasing temperature, driving the system more insulating and ferromagnetic. The Jahn-Teller effect weakens markedly within the intermediate temperature range, making the system more metal-like. We also apply this comprehensive method to a LSMO film on SrTiO 3 substrate for comparison. Our study reveals that the interplay of the O2p-Mn3d hybridization and the dynamic Jahn-Teller splitting controls the macroscopic transport and magnetic properties in ultra-thin manganites. NPG Asia Materials (2015) 7, e196; doi:10.1038/am.2015.65; published online 3 July 2015 INTRODUCTIONPerovskite manganites exhibit fascinating transport and magnetic properties, essential for fundamental research and applications. [1][2][3][4][5][6][7] In particular, with the development of thin film nanoscale technologies, more exotic properties have been observed in doped-manganite thin films over a wide range of temperature. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] However, the origin of many fundamental phenomena remains unclear. For instance, it has been recently shown that doped-manganite ultra-thin films have anomalous transport anisotropic properties, and such complex phenomena could not be explained with a strain effect alone. 20 This raises an important, fundamental question of the role of spin, charge and orbital to macroscopic properties in doped-manganite ultra-thin films and strongly correlated electron systems.Here, we design a new, unique approach to unravel the detailed evolution of electronic and spin structures and their relationship to macroscopic transport and magnetic properties versus temperature. A doped-manganite, La 0.7 Sr 0.3 MnO 3 (LSMO) ultra-thin film on a DyScO 3 (DSO) substrate (LSMO/DSO) is chosen as a model system. Using a combination of temperature-dependent spectroscopic ellipsometry, X-ray absorption spectroscopy (XAS), and X-ray magnetic

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“…Based on the reflection spectra provided by refs. [16,17], dielectric functions of LSMO at the temperatures from 100 to 295 K are obtained by using K-K approach, as illustrated in Figure 1.…”

Section: Dielectric Function Of Lsmomentioning

confidence: 99%

Investigation on emissive properties of peroskite-type oxide LSMO with grating surface

Huang

Xuan

2010

Sci. China Technol. Sci.

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This paper aims to investigate thermal radiative characteristics of thermochromic material La 0.825 Sr 0.175 MnO 3 (LSMO) with one-dimensional grating structured surfaces. The dielectric function of LSMO was calculated by K-K approach. Numerical calculation was conducted to obtain spectral emittance distribution of such surfaces with different structural parameters using the finite difference time domain (FDTD) method. It was found that the spectral emittance of LSMO structured surface exhibited the feature of selective enhancement due to the excitation of microcavity effect. The effects of structural parameters on spectral emittance indicated that the desired radiative enhancement could be achieved by the rational design of the structural parameters of grating. The temperature dependence of averaged emittance of LSMO was also calculated. The results showed that LSMO with grating structured surface had a better thermochromic performance compared with LSMO with smooth surface. grating, thermochromic materials, emission Citation:Huang J G, Xuan Y M, Li Q. Investigation on emissive properties of peroskite-type oxide LSMO with grating surface.

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Electronic structure of the double-exchange ferromagnetLa0.825Sr0.175MnO

Cited by 42 publications

References 30 publications

Magneto-optical spectroscopy of strained La2/3Sr1/3MnO3 thin films grown by “laser MBE”

Magneto-optical spectroscopy of strained La2/3Sr1/3MnO3 thin films grown by “laser MBE”

Unraveling how electronic and spin structures control macroscopic properties of manganite ultra-thin films

Investigation on emissive properties of peroskite-type oxide LSMO with grating surface

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