TY - JOUR
T1 - Phase diagram and soliton picture of a spin-peierls compound D-F5PNN
AU - Inagaki, Yuji
AU - Kawae, Tatsuya
AU - Sakai, Naoko
AU - Kawame, Naoyuki
AU - Goto, Takao
AU - Yamauchi, Jun
AU - Yoshida, Yasuo
AU - Fujii, Yutaka
AU - Kambe, Takashi
AU - Hosokoshi, Yuko
AU - Grenier, Béatrice
AU - Boucher, Jean Paul
N1 - Funding Information:
Acknowledgments The authors thank M. Matsumoto and T. Matsushita for stimulating discussions. This work was partially supported by JSPS KEKENHI Grant Numbers JP15K06424, JP25220605, and JP25287076.
Publisher Copyright:
© 2017 The Physical Society of Japan.
PY - 2017/11/15
Y1 - 2017/11/15
N2 - We investigate magnetic properties of an S = 1/2, quasi-one dimensional organic antiferromagnet, D-F5PNN using magnetization measurements taken at temperatures as low as 0.5 K. Three distinct phases were observed consisting of uniform, dimerized (D), and incommensurate (I) spin structures in the magnetic field versus temperature plane, where a significant hysteresis appears between DI transitions in the field scan measurements. A combination of magnon (S = 1) and soliton (S = 1/2) excitations have successfully reproduced the observed magnetic susceptibility. In addition, such excitations provide a reasonable interpretation of the temperature dependent electron spin resonance (ESR) spectra. These results indicate that D-F5PNN is an ideal candidate for studying the spin-Peierls transition.
AB - We investigate magnetic properties of an S = 1/2, quasi-one dimensional organic antiferromagnet, D-F5PNN using magnetization measurements taken at temperatures as low as 0.5 K. Three distinct phases were observed consisting of uniform, dimerized (D), and incommensurate (I) spin structures in the magnetic field versus temperature plane, where a significant hysteresis appears between DI transitions in the field scan measurements. A combination of magnon (S = 1) and soliton (S = 1/2) excitations have successfully reproduced the observed magnetic susceptibility. In addition, such excitations provide a reasonable interpretation of the temperature dependent electron spin resonance (ESR) spectra. These results indicate that D-F5PNN is an ideal candidate for studying the spin-Peierls transition.
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U2 - 10.7566/JPSJ.86.113706
DO - 10.7566/JPSJ.86.113706
M3 - Article
AN - SCOPUS:85036499525
SN - 0031-9015
VL - 86
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 11
M1 - 113706
ER -