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Moritomo, Yutaka; Tomioka, Y.; Asamitsu, A.; Tokura, Y.; Matsui, Y.

doi:10.1103/physrevb.51.3297

Cited by 367 publications

(227 citation statements)

References 15 publications

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“…The average manganese valence is Mn 3:5þ , however, below T c $ 217 K, the system forms an alternative Mn 3þ =Mn 4þ chargeordered state [47,48] and e g -electron orbital ordering on Mn 3þ site [49]. Below T N $ 110 K, this paramagnetic system becomes antiferromagnetically ordered [50]. The system becomes insulating in both the charge-and orbital-ordered phases from semiconducting at RT [50].…”

Section: Electronic Inhomogeneities In Transition Metal Oxidesmentioning

confidence: 99%

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The next 25 years of surface physics

Plummer¹

2001

Progress in Surface Science

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The 20th International Seminar on Surface Physics commemorates the last quarter of a century in surface physics and serves as the commencement of the next millennium. This article attempts to identify the guiding directions for the next 25 years of surface physics relevant to the field of condensed matter physics. The message is that Surface Science and specifically surface physics must undergo a Cultural Revolution from a technique-driven to science-driven discipline. There are tremendously exciting opportunities for surface physics but to take advantage of them will require a change in our culture and most importantly in the education of the next generation of surface scientist. Some of the opportunities that exist in complex highly correlated systems in reduced dimensionality will be presented to illustrate the pivotal role that surface physicists can play in contemporary Condensed Matter Physics. Ó

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Section: Electronic Inhomogeneities In Transition Metal Oxidesmentioning

confidence: 99%

“…Below T N $ 110 K, this paramagnetic system becomes antiferromagnetically ordered [50]. The system becomes insulating in both the charge-and orbital-ordered phases from semiconducting at RT [50]. Fig.…”

Section: Electronic Inhomogeneities In Transition Metal Oxidesmentioning

confidence: 99%

The next 25 years of surface physics

Plummer¹

2001

Progress in Surface Science

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“…The single crystal used in the present neutron scattering measurement was grown at the Joint Research Center for Atom Technology using the floating zone (FZ) method, as described in detail previously [10]. well as from orthorhombic to rhombohedral crystal structure occurs [6,11].…”

Section: Methodsmentioning

confidence: 99%

“…Extensive experimental studies have since been undertaken exploring a wide range of Sr doping in this manganese oxide system [10,11]. One expects that not only the electronic parameters such as the band filling, the strength of the electron correlations and so forth, but also other dynamical properties in both spin and lattice motions (or their interplay), play a crucial role in the manifestation of the interesting bulk properties.…”

Section: Introductionmentioning

confidence: 99%

Magnetism and structural distortion in theLa0.7Sr0.3Mn
Martin
¹
,
Shirane
²
,
Endoh
³

et al. 1996
Phys. Rev. B
Self Cite
302
15
150
1
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Neutron scattering studies on a single crystal of the highly-correlated electron system, La 1-x Sr x MnO 3 with x ≈ 0.3, have been carried out elucidating both the spin and lattice dynamics of this metallic ferromagnet. We report a large measured value of the spin wave stiffness constant, which directly shows that the electron transfer energy of the d band is large. The spin dynamics, including magnetic critical scattering, demonstrate that this material behaves similar to other typical metallic ferromagnets such as Fe or Ni. The crystal structure is rhombohedral, as previously reported, for all temperatures studied (below ~425K). We have observed new superlattice peaks which show that the primary rhombohedral lattice distortion arises from oxygen octahedra rotations resulting in an R 3c structure. The superlattice reflection intensities -which are very sensitive to structural changes -are independent of temperature demonstrating that there is no primary lattice distortion anomaly at the magnetic transition temperature, T c = 378.1 K, however there is a lattice contraction.

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“…Nevertheless, in the singlelayered perovskite La 0.5 Sr 1.5 MnO 4 , which we will focus on this paper, the spin and charge-orbital phase transitions are separated. With decreasing temperature, before the antiferromagnetic spin ordering that emerges at T = T N ≈ 110 K 8 , a charge-orbital ordering phase transition emerges at T = T co ≈ 220 K [8][9][10] . The charge density has a checkerboard distribution, and the orbital has an ordered wave vector (π/2, π/2).…”

Section: Introductionmentioning

confidence: 99%

Theory for charge and orbital density-wave states in manganite La0.5Sr1.5MnO4
Yao
¹
,
Chen
²
,
Gao
³

et al. 2013
Phys. Rev. B
4
0
1
0
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We investigate the high temperature phase of layered manganites, and demonstrate that the charge-orbital phase transition without magnetic order in La0.5Sr1.5MnO4 can be understood in terms of the density wave instability. The orbital ordering is found to be induced by the nesting between segments of Fermi surface with different orbital characters. The simultaneous charge and orbital orderings are elaborated with a mean field theory. The ordered orbitals are shown to be d x 2 −y 2 ± d 3z 2 −r 2 .

show abstract

Magnetic and electronic properties in hole-doped manganese oxides with layered structures:La1−x

Cited by 367 publications

References 15 publications

The next 25 years of surface physics

The next 25 years of surface physics

Magnetism and structural distortion in theLa0.7Sr0.3Mn
Martin
¹
,
Shirane
²
,
Endoh
³

et al. 1996
Phys. Rev. B
Self Cite
302
15
150
1
View full text Add to dashboard Cite

Theory for charge and orbital density-wave states in manganite La0.5Sr1.5MnO4
Yao
¹
,
Chen
²
,
Gao
³

et al. 2013
Phys. Rev. B
4
0
1
0
View full text Add to dashboard Cite

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Magnetic and electronic properties in hole-doped manganese oxides with layered structures:La1−x

Cited by 367 publications

References 15 publications

The next 25 years of surface physics

The next 25 years of surface physics

Magnetism and structural distortion in theLa0.7Sr0.3MnMartin1, Shirane2, Endoh3 et al. 1996Phys. Rev. BSelf Cite302151501View full textAdd to dashboardCite

Theory for charge and orbital density-wave states in manganite La0.5Sr1.5MnO4Yao1, Chen2, Gao3 et al. 2013Phys. Rev. B4010View full textAdd to dashboardCite

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Magnetism and structural distortion in theLa0.7Sr0.3Mn
Martin
¹
,
Shirane
²
,
Endoh
³

et al. 1996
Phys. Rev. B
Self Cite
302
15
150
1
View full text Add to dashboard Cite

Theory for charge and orbital density-wave states in manganite La0.5Sr1.5MnO4
Yao
¹
,
Chen
²
,
Gao
³

et al. 2013
Phys. Rev. B
4
0
1
0
View full text Add to dashboard Cite