ESR study of sine-Gordon excitations in S = 1/2 antiferromagnetic chain: Copper benzoate

Takayuki Asano; Hiroyuki Nojiri; Yuji Inagaki; Takuo Sakon; Jean Paul Boucher; Yoshitami Ajiro; Mitsuhiro Motokawa

doi:10.1016/S0921-4526(02)02137-3

ESR study of sine-Gordon excitations in S = 1/2 antiferromagnetic chain: Copper benzoate

Takayuki Asano, Hiroyuki Nojiri, Yuji Inagaki, Takuo Sakon, Jean Paul Boucher, Yoshitami Ajiro, Mitsuhiro Motokawa

Applied Physics

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

10 Citations (Scopus)

Abstract

We investigate electron spin resonance (ESR) on Cu benzoate, Cu(C ₆H₅COO)₂ · 3H₂O, which is an ideal model substance of S = 1/2 antiferromagnetic Heisenberg chain (AFHC) with staggered field. Theoretically, S = 1/2 AFHC subjected to the staggered field exemplifies a good realization of a quantum sine-Gordon (SG) model. In fact, under magnetic fields, this compound develops an energy gap E_g(H) in the low-lying SG excitation spectra as a function of the applied magnetic field H. In the previous work, we observed the SG-breather excitation for the first time, in wide-field range up to 30 T by means of ESR under Faraday configuration. In this work, we report a direct observation of the SG-soliton/antisoliton excitation by ESR under Voigt configuration. Thus, all solutions of the SG equation are now experimentally demonstrated by means of ESR technique.

Original language	English
Pages (from-to)	1213-1214
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02137-3
Publication status	Published - May 2003

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "ESR study of sine-Gordon excitations in S = 1/2 antiferromagnetic chain: Copper benzoate",

abstract = "We investigate electron spin resonance (ESR) on Cu benzoate, Cu(C 6H5COO)2 · 3H2O, which is an ideal model substance of S = 1/2 antiferromagnetic Heisenberg chain (AFHC) with staggered field. Theoretically, S = 1/2 AFHC subjected to the staggered field exemplifies a good realization of a quantum sine-Gordon (SG) model. In fact, under magnetic fields, this compound develops an energy gap Eg(H) in the low-lying SG excitation spectra as a function of the applied magnetic field H. In the previous work, we observed the SG-breather excitation for the first time, in wide-field range up to 30 T by means of ESR under Faraday configuration. In this work, we report a direct observation of the SG-soliton/antisoliton excitation by ESR under Voigt configuration. Thus, all solutions of the SG equation are now experimentally demonstrated by means of ESR technique.",

author = "Takayuki Asano and Hiroyuki Nojiri and Yuji Inagaki and Takuo Sakon and Boucher, {Jean Paul} and Yoshitami Ajiro and Mitsuhiro Motokawa",

year = "2003",

month = may,

doi = "10.1016/S0921-4526(02)02137-3",

language = "English",

volume = "329-333",

pages = "1213--1214",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "II",

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TY - JOUR

T1 - ESR study of sine-Gordon excitations in S = 1/2 antiferromagnetic chain

T2 - Copper benzoate

AU - Asano, Takayuki

AU - Nojiri, Hiroyuki

AU - Inagaki, Yuji

AU - Sakon, Takuo

AU - Boucher, Jean Paul

AU - Ajiro, Yoshitami

AU - Motokawa, Mitsuhiro

PY - 2003/5

Y1 - 2003/5

N2 - We investigate electron spin resonance (ESR) on Cu benzoate, Cu(C 6H5COO)2 · 3H2O, which is an ideal model substance of S = 1/2 antiferromagnetic Heisenberg chain (AFHC) with staggered field. Theoretically, S = 1/2 AFHC subjected to the staggered field exemplifies a good realization of a quantum sine-Gordon (SG) model. In fact, under magnetic fields, this compound develops an energy gap Eg(H) in the low-lying SG excitation spectra as a function of the applied magnetic field H. In the previous work, we observed the SG-breather excitation for the first time, in wide-field range up to 30 T by means of ESR under Faraday configuration. In this work, we report a direct observation of the SG-soliton/antisoliton excitation by ESR under Voigt configuration. Thus, all solutions of the SG equation are now experimentally demonstrated by means of ESR technique.

AB - We investigate electron spin resonance (ESR) on Cu benzoate, Cu(C 6H5COO)2 · 3H2O, which is an ideal model substance of S = 1/2 antiferromagnetic Heisenberg chain (AFHC) with staggered field. Theoretically, S = 1/2 AFHC subjected to the staggered field exemplifies a good realization of a quantum sine-Gordon (SG) model. In fact, under magnetic fields, this compound develops an energy gap Eg(H) in the low-lying SG excitation spectra as a function of the applied magnetic field H. In the previous work, we observed the SG-breather excitation for the first time, in wide-field range up to 30 T by means of ESR under Faraday configuration. In this work, we report a direct observation of the SG-soliton/antisoliton excitation by ESR under Voigt configuration. Thus, all solutions of the SG equation are now experimentally demonstrated by means of ESR technique.

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DO - 10.1016/S0921-4526(02)02137-3

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VL - 329-333

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EP - 1214

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - II

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