Abstract
There is a great current interest in understanding the role of charge stripes in high-Tc superconductivity. We found that static charge ordering and alignment of charge-ordered domains analogous to the charge stripes even exist in a compound as simple as cupric oxide, CuO. The behavior of the holes (charges) in charge-ordered CuO was extensively investigated by transmission electron microscopy, X-ray diffraction, charge transport, dielectric constant, magnetic susceptibility, and heat capacity measurements using clean single crystal samples. Correlation of charge, spin and lattice was clarified by these measurements. Further, we found a high temperature phase transition around 880K below which charge ordering, enhanced lattice distortion and a possible orbital coupling due to the exchange of dx2-y2 orbital of Cu, were shown to be developed. The present discovery suggests that charge stripe is quite possibly an inherent property of copper oxides and that CuO is a reference system for studying charge-spin-orbital correlation.
| Original language | English |
|---|---|
| Pages (from-to) | 1054-1063 |
| Number of pages | 10 |
| Journal | journal of the physical society of japan |
| Volume | 70 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1 2001 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Evidence of charge stripes, charge-spin-orbital coupling and phase transition in a simple copper oxide CuO. / Zheng, Xu Guang; Xu, Chao Nan; Tanaka, Eiji; Tomokiyo, Yoshitsugu; Yamada, Hiroshi; Soejima, Yuji; Yamamura, Yasuhisa; Tsuji, Toshihide.
In: journal of the physical society of japan, Vol. 70, No. 4, 01.04.2001, p. 1054-1063.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evidence of charge stripes, charge-spin-orbital coupling and phase transition in a simple copper oxide CuO
AU - Zheng, Xu Guang
AU - Xu, Chao Nan
AU - Tanaka, Eiji
AU - Tomokiyo, Yoshitsugu
AU - Yamada, Hiroshi
AU - Soejima, Yuji
AU - Yamamura, Yasuhisa
AU - Tsuji, Toshihide
PY - 2001/4/1
Y1 - 2001/4/1
N2 - There is a great current interest in understanding the role of charge stripes in high-Tc superconductivity. We found that static charge ordering and alignment of charge-ordered domains analogous to the charge stripes even exist in a compound as simple as cupric oxide, CuO. The behavior of the holes (charges) in charge-ordered CuO was extensively investigated by transmission electron microscopy, X-ray diffraction, charge transport, dielectric constant, magnetic susceptibility, and heat capacity measurements using clean single crystal samples. Correlation of charge, spin and lattice was clarified by these measurements. Further, we found a high temperature phase transition around 880K below which charge ordering, enhanced lattice distortion and a possible orbital coupling due to the exchange of dx2-y2 orbital of Cu, were shown to be developed. The present discovery suggests that charge stripe is quite possibly an inherent property of copper oxides and that CuO is a reference system for studying charge-spin-orbital correlation.
AB - There is a great current interest in understanding the role of charge stripes in high-Tc superconductivity. We found that static charge ordering and alignment of charge-ordered domains analogous to the charge stripes even exist in a compound as simple as cupric oxide, CuO. The behavior of the holes (charges) in charge-ordered CuO was extensively investigated by transmission electron microscopy, X-ray diffraction, charge transport, dielectric constant, magnetic susceptibility, and heat capacity measurements using clean single crystal samples. Correlation of charge, spin and lattice was clarified by these measurements. Further, we found a high temperature phase transition around 880K below which charge ordering, enhanced lattice distortion and a possible orbital coupling due to the exchange of dx2-y2 orbital of Cu, were shown to be developed. The present discovery suggests that charge stripe is quite possibly an inherent property of copper oxides and that CuO is a reference system for studying charge-spin-orbital correlation.
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UR - http://www.scopus.com/inward/citedby.url?scp=0035590805&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.70.1054
DO - 10.1143/JPSJ.70.1054
M3 - Article
AN - SCOPUS:0035590805
VL - 70
SP - 1054
EP - 1063
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 4
ER -