Spin dynamics of the 2D spin 1/2 quantum antiferromagnet copper deuteroformate tetradeuterate (CFTD)
The magnetic excitation spectrum in the two-dimensional (2D) S = 1/2 Heisenberg antiferromagnet copper deuteroformate tetradeuterate has been measured for temperatures up to T approximately J/2, where J = 6.31+/-0.02 meV is the 2D exchange coupling. For T
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Veröffentlicht in: | Physical review letters 2001-07, Vol.87 (3), p.037202-037202, Article 037202 |
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container_title | Physical review letters |
container_volume | 87 |
creator | Rønnow, H M McMorrow, D F Coldea, R Harrison, A Youngson, I D Perring, T G Aeppli, G Syljuåsen, O Lefmann, K Rischel, C |
description | The magnetic excitation spectrum in the two-dimensional (2D) S = 1/2 Heisenberg antiferromagnet copper deuteroformate tetradeuterate has been measured for temperatures up to T approximately J/2, where J = 6.31+/-0.02 meV is the 2D exchange coupling. For T |
doi_str_mv | 10.1103/PhysRevLett.87.037202 |
format | Article |
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(ORNL), Oak Ridge, TN (United States)</creatorcontrib><title>Spin dynamics of the 2D spin 1/2 quantum antiferromagnet copper deuteroformate tetradeuterate (CFTD)</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>The magnetic excitation spectrum in the two-dimensional (2D) S = 1/2 Heisenberg antiferromagnet copper deuteroformate tetradeuterate has been measured for temperatures up to T approximately J/2, where J = 6.31+/-0.02 meV is the 2D exchange coupling. For T<<J, a dispersion of the zone boundary energy is observed, which is attributed to a wave vector dependent quantum renormalization. At higher temperatures, spin-wavelike excitations persist, but are found to broaden and soften. 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(ORNL), Oak Ridge, TN (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spin dynamics of the 2D spin 1/2 quantum antiferromagnet copper deuteroformate tetradeuterate (CFTD)</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2001-07-16</date><risdate>2001</risdate><volume>87</volume><issue>3</issue><spage>037202</spage><epage>037202</epage><pages>037202-037202</pages><artnum>037202</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>The magnetic excitation spectrum in the two-dimensional (2D) S = 1/2 Heisenberg antiferromagnet copper deuteroformate tetradeuterate has been measured for temperatures up to T approximately J/2, where J = 6.31+/-0.02 meV is the 2D exchange coupling. For T<<J, a dispersion of the zone boundary energy is observed, which is attributed to a wave vector dependent quantum renormalization. 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source | American Physical Society Journals |
subjects | ANTIFERROMAGNETISM COPPER MATERIALS SCIENCE SPIN |
title | Spin dynamics of the 2D spin 1/2 quantum antiferromagnet copper deuteroformate tetradeuterate (CFTD) |
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