Change in magnetic ground states in nonmagnetic-impurity-doped spin-gap systems TlCu1-xMgxCl3 using muon spin relaxation

Takao Suzuki, Motoki Yamada, Yasuyuki Ishii, Isao Watanabe, Takayuki Goto, Hidekazu Tanaka, Kenya Kubo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Zero- and longitudinal-field muon-spin-relaxation (ZF- and LF-μSR) measurements were carried out on the impurity-doped spin gap systems TlCu 1-xMgxCl3. In a slightly doped case of x= 0.0047, no evidence for a static internal magnetic field was observed down to 20 mK although the specific heat indicated the magnetic phase transition at T = 0.70 K as previously reported. Above x= 0.006, the existence of a static internal magnetic field is confirmed by LF-μSR, and with increasing Mg concentration of x, the internal magnetic field, and the volume fraction of a spin frozen region where the static internal magnetic field appears increase simultaneously. These results suggest that the magnetic ground state changes from the spin singlet state to a spin fluctuating state, and to a spin frozen state by the impurity doping, and also suggest there exist a threshold doping ratio in the appearance of a static staggered moment in the S=1/2 dimer systems weakly coupled by three-dimensional interactions.

Original languageEnglish
Article number174436
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number17
DOIs
Publication statusPublished - 2011 May 23
Externally publishedYes

Fingerprint

Ground state
muons
Impurities
Magnetic fields
impurities
ground state
Doping (additives)
magnetic fields
Dimers
Specific heat
Volume fraction
Phase transitions
dimers
specific heat
moments
thresholds
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Change in magnetic ground states in nonmagnetic-impurity-doped spin-gap systems TlCu1-xMgxCl3 using muon spin relaxation. / Suzuki, Takao; Yamada, Motoki; Ishii, Yasuyuki; Watanabe, Isao; Goto, Takayuki; Tanaka, Hidekazu; Kubo, Kenya.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 17, 174436, 23.05.2011.

Research output: Contribution to journalArticle

@article{438bbce7a4404aa0b8f61528f2edf6d5,
title = "Change in magnetic ground states in nonmagnetic-impurity-doped spin-gap systems TlCu1-xMgxCl3 using muon spin relaxation",
abstract = "Zero- and longitudinal-field muon-spin-relaxation (ZF- and LF-μSR) measurements were carried out on the impurity-doped spin gap systems TlCu 1-xMgxCl3. In a slightly doped case of x= 0.0047, no evidence for a static internal magnetic field was observed down to 20 mK although the specific heat indicated the magnetic phase transition at T = 0.70 K as previously reported. Above x= 0.006, the existence of a static internal magnetic field is confirmed by LF-μSR, and with increasing Mg concentration of x, the internal magnetic field, and the volume fraction of a spin frozen region where the static internal magnetic field appears increase simultaneously. These results suggest that the magnetic ground state changes from the spin singlet state to a spin fluctuating state, and to a spin frozen state by the impurity doping, and also suggest there exist a threshold doping ratio in the appearance of a static staggered moment in the S=1/2 dimer systems weakly coupled by three-dimensional interactions.",
author = "Takao Suzuki and Motoki Yamada and Yasuyuki Ishii and Isao Watanabe and Takayuki Goto and Hidekazu Tanaka and Kenya Kubo",
year = "2011",
month = "5",
day = "23",
doi = "10.1103/PhysRevB.83.174436",
language = "English",
volume = "83",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "17",

}

TY - JOUR

T1 - Change in magnetic ground states in nonmagnetic-impurity-doped spin-gap systems TlCu1-xMgxCl3 using muon spin relaxation

AU - Suzuki, Takao

AU - Yamada, Motoki

AU - Ishii, Yasuyuki

AU - Watanabe, Isao

AU - Goto, Takayuki

AU - Tanaka, Hidekazu

AU - Kubo, Kenya

PY - 2011/5/23

Y1 - 2011/5/23

N2 - Zero- and longitudinal-field muon-spin-relaxation (ZF- and LF-μSR) measurements were carried out on the impurity-doped spin gap systems TlCu 1-xMgxCl3. In a slightly doped case of x= 0.0047, no evidence for a static internal magnetic field was observed down to 20 mK although the specific heat indicated the magnetic phase transition at T = 0.70 K as previously reported. Above x= 0.006, the existence of a static internal magnetic field is confirmed by LF-μSR, and with increasing Mg concentration of x, the internal magnetic field, and the volume fraction of a spin frozen region where the static internal magnetic field appears increase simultaneously. These results suggest that the magnetic ground state changes from the spin singlet state to a spin fluctuating state, and to a spin frozen state by the impurity doping, and also suggest there exist a threshold doping ratio in the appearance of a static staggered moment in the S=1/2 dimer systems weakly coupled by three-dimensional interactions.

AB - Zero- and longitudinal-field muon-spin-relaxation (ZF- and LF-μSR) measurements were carried out on the impurity-doped spin gap systems TlCu 1-xMgxCl3. In a slightly doped case of x= 0.0047, no evidence for a static internal magnetic field was observed down to 20 mK although the specific heat indicated the magnetic phase transition at T = 0.70 K as previously reported. Above x= 0.006, the existence of a static internal magnetic field is confirmed by LF-μSR, and with increasing Mg concentration of x, the internal magnetic field, and the volume fraction of a spin frozen region where the static internal magnetic field appears increase simultaneously. These results suggest that the magnetic ground state changes from the spin singlet state to a spin fluctuating state, and to a spin frozen state by the impurity doping, and also suggest there exist a threshold doping ratio in the appearance of a static staggered moment in the S=1/2 dimer systems weakly coupled by three-dimensional interactions.

UR - http://www.scopus.com/inward/record.url?scp=79961143534&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79961143534&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.83.174436

DO - 10.1103/PhysRevB.83.174436

M3 - Article

VL - 83

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 17

M1 - 174436

ER -