Pressure dependence of the superconducting critical temperature of HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} and HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} up to 30 GPa
Abstract
By performing experiments on samples as pure as presently available, the origin of the reported pressure-induced {ital T}{sub {ital c}} values well above 150 K in the mercury-based high-{ital T}{sub {ital c}} superconductors has been investigated. For HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} (Hg-1223) maximum {ital T}{sub {ital c}} values between 142 K and 146 K are obtained under pressure up to 30 GPa, while for HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} (Hg-1234) {ital T}{sub {ital c}} never exceeds 121 K. To verify the reproducibility between different laboratories the pressure dependence of a sample from the same batch as the sample on which Nu{tilde n}ez-Regueiro reported a {ital T}{sub {ital c}} value of 157 K at 23.5 GPa has also been measured. Below 10 GPa the agreement with his results is rather good and a possible explanation for the disagreement above 10 GPa is given. It appears that the reported high {ital T}{sub {ital c}} values in non-single-phase Hg-1223 samples are due to the presence of Hg-1234 phase impurities. Also some of the adopted definitions of {ital T}{sub {ital c}} have led to somewhat optimistic values of {ital T}{sub {ital c}}: The high-pressure results on Hg-1223 found in the literaturemore »
- Authors:
-
- Department of Physics and Astronomy, Free University, De Boelelaan 1081, 1081 HV Amsterdam (The Netherlands)
- Laboratoire de Crystallographie, CNRS, Boite Postale 166, 38042 Grenoble (France)
- Laboratorium fuer Festkoerperphysik, Eidgenoessische Technische Hochschule Hoenggerberg, 8093 Zuerich (Switzerland)
- Publication Date:
- OSTI Identifier:
- 286697
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review, B: Condensed Matter
- Additional Journal Information:
- Journal Volume: 54; Journal Issue: 6; Other Information: PBD: Aug 1996
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; TRANSITION TEMPERATURE; MERCURY OXIDES; BARIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; PRESSURE DEPENDENCE; VERY HIGH PRESSURE; ELECTRONIC STRUCTURE; ELECTRON TRANSFER; CHARGE DISTRIBUTION
Citation Formats
Jover, D T, Wijngaarden, R J, Wilhelm, H, Griessen, R, Loureiro, S M, Capponi, J, Schilling, A, and Ott, H R. Pressure dependence of the superconducting critical temperature of HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} and HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} up to 30 GPa. United States: N. p., 1996.
Web. doi:10.1103/PhysRevB.54.4265.
Jover, D T, Wijngaarden, R J, Wilhelm, H, Griessen, R, Loureiro, S M, Capponi, J, Schilling, A, & Ott, H R. Pressure dependence of the superconducting critical temperature of HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} and HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} up to 30 GPa. United States. https://doi.org/10.1103/PhysRevB.54.4265
Jover, D T, Wijngaarden, R J, Wilhelm, H, Griessen, R, Loureiro, S M, Capponi, J, Schilling, A, and Ott, H R. 1996.
"Pressure dependence of the superconducting critical temperature of HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} and HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} up to 30 GPa". United States. https://doi.org/10.1103/PhysRevB.54.4265.
@article{osti_286697,
title = {Pressure dependence of the superconducting critical temperature of HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} and HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} up to 30 GPa},
author = {Jover, D T and Wijngaarden, R J and Wilhelm, H and Griessen, R and Loureiro, S M and Capponi, J and Schilling, A and Ott, H R},
abstractNote = {By performing experiments on samples as pure as presently available, the origin of the reported pressure-induced {ital T}{sub {ital c}} values well above 150 K in the mercury-based high-{ital T}{sub {ital c}} superconductors has been investigated. For HgBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 8+{ital y}} (Hg-1223) maximum {ital T}{sub {ital c}} values between 142 K and 146 K are obtained under pressure up to 30 GPa, while for HgBa{sub 2}Ca{sub 3}Cu{sub 4}O{sub 10+{ital y}} (Hg-1234) {ital T}{sub {ital c}} never exceeds 121 K. To verify the reproducibility between different laboratories the pressure dependence of a sample from the same batch as the sample on which Nu{tilde n}ez-Regueiro reported a {ital T}{sub {ital c}} value of 157 K at 23.5 GPa has also been measured. Below 10 GPa the agreement with his results is rather good and a possible explanation for the disagreement above 10 GPa is given. It appears that the reported high {ital T}{sub {ital c}} values in non-single-phase Hg-1223 samples are due to the presence of Hg-1234 phase impurities. Also some of the adopted definitions of {ital T}{sub {ital c}} have led to somewhat optimistic values of {ital T}{sub {ital c}}: The high-pressure results on Hg-1223 found in the literature are therefore reviewed and reanalyzed. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevB.54.4265},
url = {https://www.osti.gov/biblio/286697},
journal = {Physical Review, B: Condensed Matter},
number = 6,
volume = 54,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1996},
month = {Thu Aug 01 00:00:00 EDT 1996}
}