Abstract
Tl, Cu-NMR study has been performed on the high-Tc cuprate, TlBa2Y1-xCaxCu2O7 with wide range hole concentration from the antiferromagnetic (x = 0) to the slightly overdoped (x = 1.0). For superconducting samples (x = 0.6-1.0) the local spin susceptibility (KS) at Cu-site stayed constant around room temperature, and starts slight a decrease from 160 K, which is higher than Tc. This T-dependence is what has been reported in other high-Tc cuprates in overdoped region. (T1T)-1 at Tl-site for every superconducting sample, which obeys Curie-Weiss law at high temperature, showed a significant reduction from TSG (> Tc), suggesting the existence of spin-gap even in slightly overdoped region.
| Original language | English |
|---|---|
| Pages (from-to) | 257-258 |
| Number of pages | 2 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 388-389 |
| DOIs | |
| Publication status | Published - 2003 May |
| Externally published | Yes |
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Keywords
- High-T cuprate
- NMR
- Spin-gap
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Tl, Cu-NMR study on high-Tc cuprate TlBa2Y1-xCaxCu2O7. / Kunii, Y.; Suzuki, T.; Kakishima, A.; Goto, T.; Nakajima, S.; Fukase, T.
In: Physica C: Superconductivity and its Applications, Vol. 388-389, 05.2003, p. 257-258.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Tl, Cu-NMR study on high-Tc cuprate TlBa2Y1-xCaxCu2O7
AU - Kunii, Y.
AU - Suzuki, T.
AU - Kakishima, A.
AU - Goto, T.
AU - Nakajima, S.
AU - Fukase, T.
PY - 2003/5
Y1 - 2003/5
N2 - Tl, Cu-NMR study has been performed on the high-Tc cuprate, TlBa2Y1-xCaxCu2O7 with wide range hole concentration from the antiferromagnetic (x = 0) to the slightly overdoped (x = 1.0). For superconducting samples (x = 0.6-1.0) the local spin susceptibility (KS) at Cu-site stayed constant around room temperature, and starts slight a decrease from 160 K, which is higher than Tc. This T-dependence is what has been reported in other high-Tc cuprates in overdoped region. (T1T)-1 at Tl-site for every superconducting sample, which obeys Curie-Weiss law at high temperature, showed a significant reduction from TSG (> Tc), suggesting the existence of spin-gap even in slightly overdoped region.
AB - Tl, Cu-NMR study has been performed on the high-Tc cuprate, TlBa2Y1-xCaxCu2O7 with wide range hole concentration from the antiferromagnetic (x = 0) to the slightly overdoped (x = 1.0). For superconducting samples (x = 0.6-1.0) the local spin susceptibility (KS) at Cu-site stayed constant around room temperature, and starts slight a decrease from 160 K, which is higher than Tc. This T-dependence is what has been reported in other high-Tc cuprates in overdoped region. (T1T)-1 at Tl-site for every superconducting sample, which obeys Curie-Weiss law at high temperature, showed a significant reduction from TSG (> Tc), suggesting the existence of spin-gap even in slightly overdoped region.
KW - High-T cuprate
KW - NMR
KW - Spin-gap
UR - http://www.scopus.com/inward/record.url?scp=0037850717&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037850717&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(02)02416-4
DO - 10.1016/S0921-4534(02)02416-4
M3 - Article
AN - SCOPUS:0037850717
VL - 388-389
SP - 257
EP - 258
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -