Structural effect on the stability of magnetic order in La1.875Ba0.125-xSrxCuO4

H. Goka; K. Kubo; T. Uefuji; M. Fujita; K. Yamada; M. Matsuda; I. Watanabe; K. Nagamine

doi:10.1016/S0921-4534(02)01452-1

Structural effect on the stability of magnetic order in La_1.875Ba_0.125-xSr_xCuO₄

H. Goka, K. Kubo, T. Uefuji, M. Fujita, K. Yamada, M. Matsuda, I. Watanabe, K. Nagamine

Research output: Contribution to journal › Article › peer-review

Abstract

We performed neutron scattering and μSR measurements on La_1.875Ba_0.125-xSr_xCuO₄ in order to investigate the structural effect on the stability of magnetic order. Onset temperature of magnetic order seen by μSR measurement is lower than that by neutron scattering and shows an anomalous reduction at the structural phase boundary from low-temperature less-orthorhombic structure with Pccn symmetry to low-temperature orthorhombic phase upon increasing x. On the other hand, ordering temperature as a function of x obtained by neutron scattering changes continuously irrespective of the crystal structure. These results suggest difference of dynamical nature of Cu spins between these crystal structures.

Original language	English
Pages (from-to)	390-394
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	378-381
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(02)01452-1
State	Published - Oct 1 2002
Externally published	Yes

Funding

We would like to thank H. Kimura, G. Shirane and J.M. Tranquada for stimulated discussions. This work was supported in part by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research on Priority Areas (Novel Quantum Phenomena in Transition Metal Oxides), 12046239, 2000 and by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research (A), 10304026, 2000.

Funders	Funder number
Ministry of Education, Culture, Sports, Science and Technology	10304026, 12046239

Keywords

1/8 problem
Neutron scattering
Stripe model
μSR measurement

Access to Document

10.1016/S0921-4534(02)01452-1

Cite this

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title = "Structural effect on the stability of magnetic order in La1.875Ba0.125-xSrxCuO4",

abstract = "We performed neutron scattering and μSR measurements on La1.875Ba0.125-xSrxCuO4 in order to investigate the structural effect on the stability of magnetic order. Onset temperature of magnetic order seen by μSR measurement is lower than that by neutron scattering and shows an anomalous reduction at the structural phase boundary from low-temperature less-orthorhombic structure with Pccn symmetry to low-temperature orthorhombic phase upon increasing x. On the other hand, ordering temperature as a function of x obtained by neutron scattering changes continuously irrespective of the crystal structure. These results suggest difference of dynamical nature of Cu spins between these crystal structures.",

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T1 - Structural effect on the stability of magnetic order in La1.875Ba0.125-xSrxCuO4

AU - Goka, H.

AU - Kubo, K.

AU - Uefuji, T.

AU - Fujita, M.

AU - Yamada, K.

AU - Matsuda, M.

AU - Watanabe, I.

AU - Nagamine, K.

PY - 2002/10/1

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N2 - We performed neutron scattering and μSR measurements on La1.875Ba0.125-xSrxCuO4 in order to investigate the structural effect on the stability of magnetic order. Onset temperature of magnetic order seen by μSR measurement is lower than that by neutron scattering and shows an anomalous reduction at the structural phase boundary from low-temperature less-orthorhombic structure with Pccn symmetry to low-temperature orthorhombic phase upon increasing x. On the other hand, ordering temperature as a function of x obtained by neutron scattering changes continuously irrespective of the crystal structure. These results suggest difference of dynamical nature of Cu spins between these crystal structures.

AB - We performed neutron scattering and μSR measurements on La1.875Ba0.125-xSrxCuO4 in order to investigate the structural effect on the stability of magnetic order. Onset temperature of magnetic order seen by μSR measurement is lower than that by neutron scattering and shows an anomalous reduction at the structural phase boundary from low-temperature less-orthorhombic structure with Pccn symmetry to low-temperature orthorhombic phase upon increasing x. On the other hand, ordering temperature as a function of x obtained by neutron scattering changes continuously irrespective of the crystal structure. These results suggest difference of dynamical nature of Cu spins between these crystal structures.

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