Spin thermal conductivity of the Haldane chain compound Y2 BaNiO5

K. Kordonis; A. V. Sologubenko; T. Lorenz; S. W. Cheong; A. Freimuth

doi:10.1016/j.jmmm.2006.10.382

Spin thermal conductivity of the Haldane chain compound Y₂ BaNiO₅

K. Kordonis, A. V. Sologubenko, T. Lorenz, S. W. Cheong, A. Freimuth

School of Arts and Sciences, Physics & Astronomy

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

Abstract

We report experimental results on the thermal conductivity of the spin S = 1 chain compound Y₂ BaNiO₅ in the temperature range between 5.5 and 300 K. The results show a clear anisotropic behavior of the thermal conductivity along different lattice directions. The contributions to the total thermal conductivity provided by phonons and magnons are estimated. The spin-related energy diffusion constant D_E (T), calculated from the experimental data of the magnon thermal conductivity, is approaching the theoretically predicted high-temperature limiting value close to room temperature. With decreasing temperature, D_E (T) increases reaching a broad peak at about 120 K. At low temperatures, the scattering of spin excitations by magnetic impurities seems to be the major factor limiting the magnon thermal transport.

Original language	English (US)
Pages (from-to)	1245-1247
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 2
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.382
State	Published - Mar 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Keywords

Energy diffusion
Spin chains
Thermal conductivity

Access to Document

10.1016/j.jmmm.2006.10.382

Cite this

@article{335efa87022148c8b91290f525e2f785,

title = "Spin thermal conductivity of the Haldane chain compound Y2 BaNiO5",

abstract = "We report experimental results on the thermal conductivity of the spin S = 1 chain compound Y2 BaNiO5 in the temperature range between 5.5 and 300 K. The results show a clear anisotropic behavior of the thermal conductivity along different lattice directions. The contributions to the total thermal conductivity provided by phonons and magnons are estimated. The spin-related energy diffusion constant DE (T), calculated from the experimental data of the magnon thermal conductivity, is approaching the theoretically predicted high-temperature limiting value close to room temperature. With decreasing temperature, DE (T) increases reaching a broad peak at about 120 K. At low temperatures, the scattering of spin excitations by magnetic impurities seems to be the major factor limiting the magnon thermal transport.",

keywords = "Energy diffusion, Spin chains, Thermal conductivity",

author = "K. Kordonis and Sologubenko, {A. V.} and T. Lorenz and Cheong, {S. W.} and A. Freimuth",

note = "Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft through SFB 608.",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.382",

language = "English (US)",

volume = "310",

pages = "1245--1247",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "2 SUPPL. PART 2",

}

TY - JOUR

T1 - Spin thermal conductivity of the Haldane chain compound Y2 BaNiO5

AU - Kordonis, K.

AU - Sologubenko, A. V.

AU - Lorenz, T.

AU - Cheong, S. W.

AU - Freimuth, A.

N1 - Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft through SFB 608.

PY - 2007/3

Y1 - 2007/3

N2 - We report experimental results on the thermal conductivity of the spin S = 1 chain compound Y2 BaNiO5 in the temperature range between 5.5 and 300 K. The results show a clear anisotropic behavior of the thermal conductivity along different lattice directions. The contributions to the total thermal conductivity provided by phonons and magnons are estimated. The spin-related energy diffusion constant DE (T), calculated from the experimental data of the magnon thermal conductivity, is approaching the theoretically predicted high-temperature limiting value close to room temperature. With decreasing temperature, DE (T) increases reaching a broad peak at about 120 K. At low temperatures, the scattering of spin excitations by magnetic impurities seems to be the major factor limiting the magnon thermal transport.

AB - We report experimental results on the thermal conductivity of the spin S = 1 chain compound Y2 BaNiO5 in the temperature range between 5.5 and 300 K. The results show a clear anisotropic behavior of the thermal conductivity along different lattice directions. The contributions to the total thermal conductivity provided by phonons and magnons are estimated. The spin-related energy diffusion constant DE (T), calculated from the experimental data of the magnon thermal conductivity, is approaching the theoretically predicted high-temperature limiting value close to room temperature. With decreasing temperature, DE (T) increases reaching a broad peak at about 120 K. At low temperatures, the scattering of spin excitations by magnetic impurities seems to be the major factor limiting the magnon thermal transport.

KW - Energy diffusion

KW - Spin chains

KW - Thermal conductivity

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U2 - 10.1016/j.jmmm.2006.10.382

DO - 10.1016/j.jmmm.2006.10.382

M3 - Article

AN - SCOPUS:33847262133

SN - 0304-8853

VL - 310

SP - 1245

EP - 1247

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 2

ER -