Low-temperature glassy response of ultrathin La0.8Ca0.2MnO3 films to electric and magnetic fields

A. Bhattacharya; M. Eblen-Zayas; N. E. Staley; A. L. Kobrinskii; A. M. Goldman

doi:10.1103/PhysRevB.72.132406

Low-temperature glassy response of ultrathin La0.8Ca0.2MnO3 films to electric and magnetic fields

A. Bhattacharya, M. Eblen-Zayas, N. E. Staley, A. L. Kobrinskii, A. M. Goldman

Physics and Astronomy (Twin Cities)

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

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Abstract

The glassy response of ultrathin films of La0.8Ca0.2MnO3 in the mixed phase to external magnetic and gated electro-static fields have been studied at low temperatures. The response of the resistance to external fields provides direct evidence for a hierarchical energy landscape, with strong cross-couplings between spin and charge. Magnetic coercivity measurements indicate that strong magnetic disorder accompanies the mixed phase in these films. This magnetic disorder, and the resultant coercivity, can be decreased by cooling in a large magnetic field or by electrostatic gating.

Original language	English (US)
Article number	132406
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.72.132406
State	Published - Oct 1 2005

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10.1103/PhysRevB.72.132406

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abstract = "The glassy response of ultrathin films of La0.8Ca0.2MnO3 in the mixed phase to external magnetic and gated electro-static fields have been studied at low temperatures. The response of the resistance to external fields provides direct evidence for a hierarchical energy landscape, with strong cross-couplings between spin and charge. Magnetic coercivity measurements indicate that strong magnetic disorder accompanies the mixed phase in these films. This magnetic disorder, and the resultant coercivity, can be decreased by cooling in a large magnetic field or by electrostatic gating.",

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AU - Bhattacharya, A.

AU - Eblen-Zayas, M.

AU - Staley, N. E.

AU - Kobrinskii, A. L.

AU - Goldman, A. M.

PY - 2005/10/1

Y1 - 2005/10/1

N2 - The glassy response of ultrathin films of La0.8Ca0.2MnO3 in the mixed phase to external magnetic and gated electro-static fields have been studied at low temperatures. The response of the resistance to external fields provides direct evidence for a hierarchical energy landscape, with strong cross-couplings between spin and charge. Magnetic coercivity measurements indicate that strong magnetic disorder accompanies the mixed phase in these films. This magnetic disorder, and the resultant coercivity, can be decreased by cooling in a large magnetic field or by electrostatic gating.

AB - The glassy response of ultrathin films of La0.8Ca0.2MnO3 in the mixed phase to external magnetic and gated electro-static fields have been studied at low temperatures. The response of the resistance to external fields provides direct evidence for a hierarchical energy landscape, with strong cross-couplings between spin and charge. Magnetic coercivity measurements indicate that strong magnetic disorder accompanies the mixed phase in these films. This magnetic disorder, and the resultant coercivity, can be decreased by cooling in a large magnetic field or by electrostatic gating.

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Low-temperature glassy response of ultrathin La0.8Ca0.2MnO3 films to electric and magnetic fields

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