High-field magnetic torque measurement in the spin gap system (CH 3)2CHNH3CuCl3

Takehiro Saito, Takahiko Sasaki, Takao Suzuki, Akira Oosawa, Takayuki Goto, Satoshi Awaji, Kazuo Watanabe, Norio Kobayashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

High-field magnetic torque measurement was carried out in the spin gap system (CH3)2CHNH3CuCl3. It was observed that the magnitude of the magnetic torque τ is almost zero until the critical field and then increases rapidly, which indicates the existence of magnetic quantum phase transition from the spin-gap phase to the field-induced magnetic ordered phase. From the temperature dependence of τ, a cusplike minimum indicative of the Bose-Einstein condensation (BEC) of magnons was observed for H ⊥ C-plane, while a kink anomaly was observed for H ⊥ A-plane at the field-induced transition temperature. It was found that this difference in behavior between H ⊥ A-plane and H ⊥ C-plane can be interpreted as the breaking of the magnon BEC picture due to a rotational symmetry breaking. An additional anomaly was also observed in the field-induced magnetic ordered phase at the intermediate angle of the applied magnetic field in the A-plane and discussed in terms of spin-flop transition, spin-reorientation transition, and spin-lattice correlations. In order to investigate spin-lattice correlations in (CH3)2CHNH 3CuCl3, we performed magnetostriction measurement and observed that magnetostriction appears with the disappearance of the spin gap.

Original languageEnglish
Article number084708
JournalJournal of the Physical Society of Japan
Volume76
Issue number8
DOIs
Publication statusPublished - 2007 Aug
Externally publishedYes

Fingerprint

torque
methylidyne
magnetic fields
magnetostriction
condensation
anomalies
magnons
retraining
broken symmetry
transition temperature
temperature dependence

Keywords

  • (CH)CHNHCuCl
  • Anisotropy
  • Bose-Einstein condensation of magnons
  • Field-induced magnetic ordering
  • High-field magnetic torque measurement
  • Magnetostriction measurement
  • Spin gap

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

High-field magnetic torque measurement in the spin gap system (CH 3)2CHNH3CuCl3. / Saito, Takehiro; Sasaki, Takahiko; Suzuki, Takao; Oosawa, Akira; Goto, Takayuki; Awaji, Satoshi; Watanabe, Kazuo; Kobayashi, Norio.

In: Journal of the Physical Society of Japan, Vol. 76, No. 8, 084708, 08.2007.

Research output: Contribution to journalArticle

Saito, T, Sasaki, T, Suzuki, T, Oosawa, A, Goto, T, Awaji, S, Watanabe, K & Kobayashi, N 2007, 'High-field magnetic torque measurement in the spin gap system (CH 3)2CHNH3CuCl3', Journal of the Physical Society of Japan, vol. 76, no. 8, 084708. https://doi.org/10.1143/JPSJ.76.084708
Saito, Takehiro ; Sasaki, Takahiko ; Suzuki, Takao ; Oosawa, Akira ; Goto, Takayuki ; Awaji, Satoshi ; Watanabe, Kazuo ; Kobayashi, Norio. / High-field magnetic torque measurement in the spin gap system (CH 3)2CHNH3CuCl3. In: Journal of the Physical Society of Japan. 2007 ; Vol. 76, No. 8.
@article{4ec8f12eb927496693ee25d11a4fa07e,
title = "High-field magnetic torque measurement in the spin gap system (CH 3)2CHNH3CuCl3",
abstract = "High-field magnetic torque measurement was carried out in the spin gap system (CH3)2CHNH3CuCl3. It was observed that the magnitude of the magnetic torque τ is almost zero until the critical field and then increases rapidly, which indicates the existence of magnetic quantum phase transition from the spin-gap phase to the field-induced magnetic ordered phase. From the temperature dependence of τ, a cusplike minimum indicative of the Bose-Einstein condensation (BEC) of magnons was observed for H ⊥ C-plane, while a kink anomaly was observed for H ⊥ A-plane at the field-induced transition temperature. It was found that this difference in behavior between H ⊥ A-plane and H ⊥ C-plane can be interpreted as the breaking of the magnon BEC picture due to a rotational symmetry breaking. An additional anomaly was also observed in the field-induced magnetic ordered phase at the intermediate angle of the applied magnetic field in the A-plane and discussed in terms of spin-flop transition, spin-reorientation transition, and spin-lattice correlations. In order to investigate spin-lattice correlations in (CH3)2CHNH 3CuCl3, we performed magnetostriction measurement and observed that magnetostriction appears with the disappearance of the spin gap.",
keywords = "(CH)CHNHCuCl, Anisotropy, Bose-Einstein condensation of magnons, Field-induced magnetic ordering, High-field magnetic torque measurement, Magnetostriction measurement, Spin gap",
author = "Takehiro Saito and Takahiko Sasaki and Takao Suzuki and Akira Oosawa and Takayuki Goto and Satoshi Awaji and Kazuo Watanabe and Norio Kobayashi",
year = "2007",
month = "8",
doi = "10.1143/JPSJ.76.084708",
language = "English",
volume = "76",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "8",

}

TY - JOUR

T1 - High-field magnetic torque measurement in the spin gap system (CH 3)2CHNH3CuCl3

AU - Saito, Takehiro

AU - Sasaki, Takahiko

AU - Suzuki, Takao

AU - Oosawa, Akira

AU - Goto, Takayuki

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

AU - Kobayashi, Norio

PY - 2007/8

Y1 - 2007/8

N2 - High-field magnetic torque measurement was carried out in the spin gap system (CH3)2CHNH3CuCl3. It was observed that the magnitude of the magnetic torque τ is almost zero until the critical field and then increases rapidly, which indicates the existence of magnetic quantum phase transition from the spin-gap phase to the field-induced magnetic ordered phase. From the temperature dependence of τ, a cusplike minimum indicative of the Bose-Einstein condensation (BEC) of magnons was observed for H ⊥ C-plane, while a kink anomaly was observed for H ⊥ A-plane at the field-induced transition temperature. It was found that this difference in behavior between H ⊥ A-plane and H ⊥ C-plane can be interpreted as the breaking of the magnon BEC picture due to a rotational symmetry breaking. An additional anomaly was also observed in the field-induced magnetic ordered phase at the intermediate angle of the applied magnetic field in the A-plane and discussed in terms of spin-flop transition, spin-reorientation transition, and spin-lattice correlations. In order to investigate spin-lattice correlations in (CH3)2CHNH 3CuCl3, we performed magnetostriction measurement and observed that magnetostriction appears with the disappearance of the spin gap.

AB - High-field magnetic torque measurement was carried out in the spin gap system (CH3)2CHNH3CuCl3. It was observed that the magnitude of the magnetic torque τ is almost zero until the critical field and then increases rapidly, which indicates the existence of magnetic quantum phase transition from the spin-gap phase to the field-induced magnetic ordered phase. From the temperature dependence of τ, a cusplike minimum indicative of the Bose-Einstein condensation (BEC) of magnons was observed for H ⊥ C-plane, while a kink anomaly was observed for H ⊥ A-plane at the field-induced transition temperature. It was found that this difference in behavior between H ⊥ A-plane and H ⊥ C-plane can be interpreted as the breaking of the magnon BEC picture due to a rotational symmetry breaking. An additional anomaly was also observed in the field-induced magnetic ordered phase at the intermediate angle of the applied magnetic field in the A-plane and discussed in terms of spin-flop transition, spin-reorientation transition, and spin-lattice correlations. In order to investigate spin-lattice correlations in (CH3)2CHNH 3CuCl3, we performed magnetostriction measurement and observed that magnetostriction appears with the disappearance of the spin gap.

KW - (CH)CHNHCuCl

KW - Anisotropy

KW - Bose-Einstein condensation of magnons

KW - Field-induced magnetic ordering

KW - High-field magnetic torque measurement

KW - Magnetostriction measurement

KW - Spin gap

UR - http://www.scopus.com/inward/record.url?scp=34547902123&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547902123&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.76.084708

DO - 10.1143/JPSJ.76.084708

M3 - Article

AN - SCOPUS:34547902123

VL - 76

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 8

M1 - 084708

ER -