Abstract
Total energy local density determinations of the effects of pressure on the (Sr1-xCax)1-yCuO2 infinite layer (IL) Tc=110 K superconductor show, that the compressibility is highly anisotropic. Surprisingly, the energy location of the van Hove singularity (vHs) moves towards EF with pressure, thereby showing a correspondence between the number of holes (from dopants) needed to shift EF down to the vHs and the pressure needed to be applied to a fixed dopant material to achieve the best Tc. Some consequences for understanding the pressure effects on the Tc of the Hg superconductors and possible experiments are suggested.
| Original language | English |
|---|---|
| Pages (from-to) | 246-252 |
| Number of pages | 7 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 219 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Jan 1 1994 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Anisotropic compressibility and effects of pressure on the electronic structure and Tc for superconducting infinite layer compounds. / Novikov, D. L.; Mryasov, O. N.; Freeman, Arthur J.
In: Physica C: Superconductivity and its Applications, Vol. 219, No. 1-2, 01.01.1994, p. 246-252.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anisotropic compressibility and effects of pressure on the electronic structure and Tc for superconducting infinite layer compounds
AU - Novikov, D. L.
AU - Mryasov, O. N.
AU - Freeman, Arthur J
PY - 1994/1/1
Y1 - 1994/1/1
N2 - Total energy local density determinations of the effects of pressure on the (Sr1-xCax)1-yCuO2 infinite layer (IL) Tc=110 K superconductor show, that the compressibility is highly anisotropic. Surprisingly, the energy location of the van Hove singularity (vHs) moves towards EF with pressure, thereby showing a correspondence between the number of holes (from dopants) needed to shift EF down to the vHs and the pressure needed to be applied to a fixed dopant material to achieve the best Tc. Some consequences for understanding the pressure effects on the Tc of the Hg superconductors and possible experiments are suggested.
AB - Total energy local density determinations of the effects of pressure on the (Sr1-xCax)1-yCuO2 infinite layer (IL) Tc=110 K superconductor show, that the compressibility is highly anisotropic. Surprisingly, the energy location of the van Hove singularity (vHs) moves towards EF with pressure, thereby showing a correspondence between the number of holes (from dopants) needed to shift EF down to the vHs and the pressure needed to be applied to a fixed dopant material to achieve the best Tc. Some consequences for understanding the pressure effects on the Tc of the Hg superconductors and possible experiments are suggested.
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UR - http://www.scopus.com/inward/citedby.url?scp=0005058793&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(94)90042-6
DO - 10.1016/0921-4534(94)90042-6
M3 - Article
AN - SCOPUS:0005058793
VL - 219
SP - 246
EP - 252
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -