Superconductivity above 150 K in HgBa2Ca2Cu3O8+δ at high pressures

@article{Chu1993SuperconductivityA1,
  title={Superconductivity above 150 K in HgBa2Ca2Cu3O8+$\delta$ at high pressures},
  author={Ching-Wu Chu and L. Gao and F. C. Chen and Z. J. Huang and Ronald Meng and Y. Y. Xue},
  journal={Nature},
  year={1993},
  volume={365},
  pages={323-325}
}
RECENTLY, superconductivity at >130 K was reported1,2 in multiphase samples of the compound system HgBa2Can−1CunO2n+2+δ (Hg-12(n−l)n) with n = 1, 2, 3,.... Single-phase Hg-1223 was subsequently synthesized and found to be superconducting at a record temperature of 135 K (ref. 3). It remains to be seen if a much higher transition temperature (Tc) than 135K can be achieved in this compound system. The application of pressure generally increases the Tc of underdoped layered cuprates, with a… Expand
Superconductivity at 133 K in Tl2Ba2Ca2Cu3O10+x under high pressure
Abstract The pressure dependence of the superconducting transition temperature T c of Tl 2 Ba 2 Ca 2 Cu 3 O 10+ x (Tl-2223) has been measu red under pressures up to 13 GPa (130 kbar). At 4.2 GPa aExpand
Superconductivity above 250K in Tl1.8Ba2.0Ca2.6Cu3.0O10+δ at high pressure
The pressure dependence of the superconducting transition temperature Tc (onset) of Tl1.8Ba2.0Ca2.6Cu3.0O10+δ (Tl-2223) has been measured under quasi-hydrostatic pressure (QHP) up to 5.0 GPa. The TcExpand
Consideration of exciton models to explain superconductivity transition above 150 K in HgBa2Ca2Cu3O8+δ at ultra-high pressure
  • G. Vezzoli
  • Physics, Chemistry
  • Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences
  • 1994
It has been recently reported that the shoulder of the superconducting transition in HgBa2Ca2Cu3O8+δ can be elevated from ca. 133K to ca. 153 K as pressure (P) is raised from 1 atm (ca. 105 Pa) toExpand
High-pressure synthesis of single-phase superconductors HgzSrxBa2−xCa2Cu3O8+δ and (Hg, M)Sr2Ca2Cu3Oy with MPb and Mo
Abstract The recent observation of superconductivity above 160 K under high pressures has prompted us to investigate the possibility of retaining such high-temperature superconductivity at ambientExpand
Pressure dependence of the superconducting critical temperature Tc of HgBa2Ca2Cu3O8+x up to 26 GPa
Abstract The pressure dependence of the newly discovered mercury-compound HgBa 2 Ca 2 Cu 3 O 8+ x (Hg-1223) has been studied in detail up to 26 GPa in a cryogenic diamond anvil cell on a sample withExpand
50 K enhancement of Tc by pressure in the Hg-2212 superconductor
Abstract The superconducting properties of mercury cuprates are extremely sensitive to compression. The highest transition temperatures obtained up to date have been measured on Hg-1223 at 25–30 GpaExpand
Zero Resistivity above 150 K in HgBa2Ca2Cu3O8+δ at High Pressure
We measured the electrical resistivity of a HgBa2Ca2Cu3O8+δ (Hg-1223) polycrystalline sample under high pressure. Owing to the improved sample quality and the nearly hydrostatic pressure, weExpand
Synthesis and neutron powder diffraction study of the superconductor HgBa2Ca2Cu308 + by T1 substitution
  • P. Dai
  • Materials Science, Chemistry
  • 1995
Substitution of T1 for Hg was performed in the Hg based 1223 phase HgBa2Ca2Cu3Os + ~ ( Tc = 135 K), resulting in an increase of the superconducting transition temperature to 138 K for samples with aExpand
Stabilization of mercury cuprates by bismuth The superconductors Hg − xBixBa2Cam − 1CumO2m + 2 + δ
Abstract The synthesis of the “BaHg” based cuprates at normal pressures is a difficult problem especially for the 1223 phase that reaches a T c of 133 K. In order to stabilize these oxides, theExpand
Superconductivity, microstructure and pressure effect on Tc of Hg- based compounds prepared under high pressure
High-temperature superconductors of the mercury-based system were synthesized under high temperature and high pressure. The measurements of resistance and DC magnetic susceptibility for the samplesExpand
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THE recent discovery1 of superconductivity below a transition temperature (Tc) of 94 K in HgBa2CuO4+δ has extended the repertoire of high-Tc superconductors containing copper oxide planes embedded inExpand
Study of superconductivity in the Hg-Ba-Ca-Cu-O system
Abstract The high temperature superconducting Hg-Ba-Ca-Cu-O (HBCCO) compound system reported by Schilling et al. has been reproduced with an onset transition-temperature ( T c0 ) up to ≁140 K and aExpand
Physical properties of high temperature superconductors
While a great effort has been made to discover new high temperature superconductors, a large-scale, parallel effort has been made to determine the fundamental properties of these fascinating newExpand
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