Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni

Yuji Furukawa; Kazuki Kiuchi; Ken Ichi Kumagai; Yoshitami Ajiro; Yasuo Narumi; Masahiro Iwaki; Koichi Kindo; Alberto Bianchi; Stefano Carretta; Paolo Santini; Ferdinando Borsa; Grigore A. Timco; Richard E P Winpenny

doi:10.1103/PhysRevB.79.134416

Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni

Yuji Furukawa, Kazuki Kiuchi, Ken Ichi Kumagai, Yoshitami Ajiro, Yasuo Narumi, Masahiro Iwaki, Koichi Kindo, Alberto Bianchi, Stefano Carretta, Paolo Santini, Ferdinando Borsa, Grigore A. Timco, Richard E P Winpenny

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Abstract

The magnetic properties of an odd spin number antiferromagnetic ring Cr8 Ni have been investigated by high-field magnetization, specific-heat, and nuclear-magnetic-resonance measurements at very low temperatures (below 1 K). It is found that the ground state of this frustrated spin ring is a singlet state with total spin value ST =0 and zero expectation value of the local spins. The energy-level structure for low-lying excited total spin state ST ≠ 0 shows a breakdown of the Landé interval rule in agreement with theoretical results. Evidences of sizeable Dzyaloshinski-Moriya interactions have been found in the magnetic-field dependence of low-temperature specific-heat and magnetization data. © 2009 The American Physical Society.

Original language	English
Article number	134416
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.79.134416
Publication status	Published - 1 Apr 2009

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Furukawa, Y., Kiuchi, K., Kumagai, K. I., Ajiro, Y., Narumi, Y., Iwaki, M., Kindo, K., Bianchi, A., Carretta, S., Santini, P., Borsa, F., Timco, G. A., & Winpenny, R. E. P. (2009). Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni. Physical Review B - Condensed Matter and Materials Physics, 79(13), Article 134416. https://doi.org/10.1103/PhysRevB.79.134416

@article{09c6b72d9ae44db8a642b41bad9867eb,

title = "Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni",

abstract = "The magnetic properties of an odd spin number antiferromagnetic ring Cr8 Ni have been investigated by high-field magnetization, specific-heat, and nuclear-magnetic-resonance measurements at very low temperatures (below 1 K). It is found that the ground state of this frustrated spin ring is a singlet state with total spin value ST =0 and zero expectation value of the local spins. The energy-level structure for low-lying excited total spin state ST ≠ 0 shows a breakdown of the Land{\'e} interval rule in agreement with theoretical results. Evidences of sizeable Dzyaloshinski-Moriya interactions have been found in the magnetic-field dependence of low-temperature specific-heat and magnetization data. {\textcopyright} 2009 The American Physical Society.",

author = "Yuji Furukawa and Kazuki Kiuchi and Kumagai, {Ken Ichi} and Yoshitami Ajiro and Yasuo Narumi and Masahiro Iwaki and Koichi Kindo and Alberto Bianchi and Stefano Carretta and Paolo Santini and Ferdinando Borsa and Timco, {Grigore A.} and Winpenny, {Richard E P}",

year = "2009",

month = apr,

day = "1",

doi = "10.1103/PhysRevB.79.134416",

language = "English",

volume = "79",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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}

Furukawa, Y, Kiuchi, K, Kumagai, KI, Ajiro, Y, Narumi, Y, Iwaki, M, Kindo, K, Bianchi, A, Carretta, S, Santini, P, Borsa, F, Timco, GA & Winpenny, REP 2009, 'Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni', Physical Review B - Condensed Matter and Materials Physics, vol. 79, no. 13, 134416. https://doi.org/10.1103/PhysRevB.79.134416

TY - JOUR

T1 - Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni

AU - Furukawa, Yuji

AU - Kiuchi, Kazuki

AU - Kumagai, Ken Ichi

AU - Ajiro, Yoshitami

AU - Narumi, Yasuo

AU - Iwaki, Masahiro

AU - Kindo, Koichi

AU - Bianchi, Alberto

AU - Carretta, Stefano

AU - Santini, Paolo

AU - Borsa, Ferdinando

AU - Timco, Grigore A.

AU - Winpenny, Richard E P

PY - 2009/4/1

Y1 - 2009/4/1

N2 - The magnetic properties of an odd spin number antiferromagnetic ring Cr8 Ni have been investigated by high-field magnetization, specific-heat, and nuclear-magnetic-resonance measurements at very low temperatures (below 1 K). It is found that the ground state of this frustrated spin ring is a singlet state with total spin value ST =0 and zero expectation value of the local spins. The energy-level structure for low-lying excited total spin state ST ≠ 0 shows a breakdown of the Landé interval rule in agreement with theoretical results. Evidences of sizeable Dzyaloshinski-Moriya interactions have been found in the magnetic-field dependence of low-temperature specific-heat and magnetization data. © 2009 The American Physical Society.

AB - The magnetic properties of an odd spin number antiferromagnetic ring Cr8 Ni have been investigated by high-field magnetization, specific-heat, and nuclear-magnetic-resonance measurements at very low temperatures (below 1 K). It is found that the ground state of this frustrated spin ring is a singlet state with total spin value ST =0 and zero expectation value of the local spins. The energy-level structure for low-lying excited total spin state ST ≠ 0 shows a breakdown of the Landé interval rule in agreement with theoretical results. Evidences of sizeable Dzyaloshinski-Moriya interactions have been found in the magnetic-field dependence of low-temperature specific-heat and magnetization data. © 2009 The American Physical Society.

U2 - 10.1103/PhysRevB.79.134416

DO - 10.1103/PhysRevB.79.134416

M3 - Article

SN - 1098-0121

VL - 79

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 13

M1 - 134416

ER -

Evidence of spin singlet ground state in the frustrated antiferromagnetic ring Cr8 Ni

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