Abstract
Atomic-scale superconductor/ferromagnet (S/F) and superconductor/antiferromagnet (S/AF) multilayered systems are investigated in order to clarify the stability of the π-phase where the phase difference of the superconducting (SC) order parameter between neighboring SC layers is π. We clarify the stable region of this phase in the phase diagram with respect to temperature and exchange field (B) in magnetic layers. In the phase diagram, we show that the π-phase appears in both the S/F and S/AF cases. In particular, although a previous work reported that the π-phase is not obtained for any reasonable value of B in the S/AF case where the band structure in the normal state of SC and magnetic layers are metallic and identical with each other, we find in this case that the stable region of the π-phase is as wide as that in the S/F case under a certain condition. We also investigate how the π-phase is affected by detailed band structures and the symmetry of SC order parameter, and discuss the possibility of this phase in the layered magnetic superconductor, RuSr2GdCu2O8.
| Original language | English |
|---|---|
| Pages (from-to) | 2124-2133 |
| Number of pages | 10 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 70 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2001 Jul |
| Externally published | Yes |
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Keywords
- π-phase
- Atomic-scale superconductor/magnet multilayered system
- High-T superconductivity
- Phase diagram
- RuSrGdCuO
- Unconventional superconductivity
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Stability of π-Phase in Atomic-Scale Superconductor/Magnet Multilayered System. / Kanegae, Yoshiharu; Ohashi, Yoji.
In: Journal of the Physical Society of Japan, Vol. 70, No. 7, 07.2001, p. 2124-2133.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Stability of π-Phase in Atomic-Scale Superconductor/Magnet Multilayered System
AU - Kanegae, Yoshiharu
AU - Ohashi, Yoji
PY - 2001/7
Y1 - 2001/7
N2 - Atomic-scale superconductor/ferromagnet (S/F) and superconductor/antiferromagnet (S/AF) multilayered systems are investigated in order to clarify the stability of the π-phase where the phase difference of the superconducting (SC) order parameter between neighboring SC layers is π. We clarify the stable region of this phase in the phase diagram with respect to temperature and exchange field (B) in magnetic layers. In the phase diagram, we show that the π-phase appears in both the S/F and S/AF cases. In particular, although a previous work reported that the π-phase is not obtained for any reasonable value of B in the S/AF case where the band structure in the normal state of SC and magnetic layers are metallic and identical with each other, we find in this case that the stable region of the π-phase is as wide as that in the S/F case under a certain condition. We also investigate how the π-phase is affected by detailed band structures and the symmetry of SC order parameter, and discuss the possibility of this phase in the layered magnetic superconductor, RuSr2GdCu2O8.
AB - Atomic-scale superconductor/ferromagnet (S/F) and superconductor/antiferromagnet (S/AF) multilayered systems are investigated in order to clarify the stability of the π-phase where the phase difference of the superconducting (SC) order parameter between neighboring SC layers is π. We clarify the stable region of this phase in the phase diagram with respect to temperature and exchange field (B) in magnetic layers. In the phase diagram, we show that the π-phase appears in both the S/F and S/AF cases. In particular, although a previous work reported that the π-phase is not obtained for any reasonable value of B in the S/AF case where the band structure in the normal state of SC and magnetic layers are metallic and identical with each other, we find in this case that the stable region of the π-phase is as wide as that in the S/F case under a certain condition. We also investigate how the π-phase is affected by detailed band structures and the symmetry of SC order parameter, and discuss the possibility of this phase in the layered magnetic superconductor, RuSr2GdCu2O8.
KW - π-phase
KW - Atomic-scale superconductor/magnet multilayered system
KW - High-T superconductivity
KW - Phase diagram
KW - RuSrGdCuO
KW - Unconventional superconductivity
UR - http://www.scopus.com/inward/record.url?scp=0035613822&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035613822&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.70.2124
DO - 10.1143/JPSJ.70.2124
M3 - Article
AN - SCOPUS:0035613822
VL - 70
SP - 2124
EP - 2133
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 7
ER -