Magnetic field-dependent thermal transport in a spin-1/2 chain compound

A. V. Sologubenko; K. Berggold; T. Lorenz; A. Rosch; E. Shimshoni; M. D. Phillips; M. M. Turnbull

doi:10.1016/j.physb.2007.10.167

Magnetic field-dependent thermal transport in a spin-1/2 chain compound

A. V. Sologubenko
, K. Berggold
, T. Lorenz
, A. Rosch
, E. Shimshoni
, M. D. Phillips
, M. M. Turnbull

University of Cologne
University of Haifa
Clark University

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

2 Scopus citations

Abstract

We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C₄ H₄ N₂) (NO₃)₂ at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κ_s (B, T) parallel to the chains has been identified. At low temperatures, κ_s (B) is characterized by two main features, namely a minimum at μ_B B ∼ k_B T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.

Original language	English
Pages (from-to)	1445-1446
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	403
Issue number	5-9
DOIs	https://doi.org/10.1016/j.physb.2007.10.167
State	Published - 1 Apr 2008
Externally published	Yes

Keywords

Quantum critical point
Spin chains
Thermal conductivity

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10.1016/j.physb.2007.10.167

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title = "Magnetic field-dependent thermal transport in a spin-1/2 chain compound",

abstract = "We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C4 H4 N2) (NO3)2 at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κs (B, T) parallel to the chains has been identified. At low temperatures, κs (B) is characterized by two main features, namely a minimum at μB B ∼ kB T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.",

keywords = "Quantum critical point, Spin chains, Thermal conductivity",

author = "Sologubenko, \{A. V.\} and K. Berggold and T. Lorenz and A. Rosch and E. Shimshoni and Phillips, \{M. D.\} and Turnbull, \{M. M.\}",

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doi = "10.1016/j.physb.2007.10.167",

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TY - JOUR

T1 - Magnetic field-dependent thermal transport in a spin-1/2 chain compound

AU - Sologubenko, A. V.

AU - Berggold, K.

AU - Lorenz, T.

AU - Rosch, A.

AU - Shimshoni, E.

AU - Phillips, M. D.

AU - Turnbull, M. M.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C4 H4 N2) (NO3)2 at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κs (B, T) parallel to the chains has been identified. At low temperatures, κs (B) is characterized by two main features, namely a minimum at μB B ∼ kB T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.

AB - We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C4 H4 N2) (NO3)2 at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κs (B, T) parallel to the chains has been identified. At low temperatures, κs (B) is characterized by two main features, namely a minimum at μB B ∼ kB T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.

KW - Quantum critical point

KW - Spin chains

KW - Thermal conductivity

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U2 - 10.1016/j.physb.2007.10.167

DO - 10.1016/j.physb.2007.10.167

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AN - SCOPUS:39749100590

SN - 0921-4526

VL - 403

SP - 1445

EP - 1446

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 5-9

ER -

Magnetic field-dependent thermal transport in a spin-1/2 chain compound

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