Superconductivity

E. Kaldis, P. Fischer, A.W. Hewat, E.A. Hewat, J. Karpinski, S. Rusiecki, "Low temperature anomalies and pressure: effects on the structure and Tc of the superconductor YBa2Cu4O8 (Tc = 80 K)," Physica C, 159, 668-80, 15 July 1989. Emanuel Kaldis (Laboratory of Solid State Physics ETH, Zurich, Switzerland): "With this experiment it became evident that the contraction of the apical bond (Cu2--O1) is correlated with the substantial increase of Tc under hydrostatic pressure, which we had found ear


Register for free to listen to this article
Listen with Speechify
0:00
1:00
Share

E. Kaldis, P. Fischer, A.W. Hewat, E.A. Hewat, J. Karpinski, S. Rusiecki, "Low temperature anomalies and pressure: effects on the structure and Tc of the superconductor YBa2Cu4O8 (Tc = 80 K)," Physica C, 159, 668-80, 15 July 1989.

Emanuel Kaldis (Laboratory of Solid State Physics ETH, Zurich, Switzerland): "With this experiment it became evident that the contraction of the apical bond (Cu2--O1) is correlated with the substantial increase of Tc under hydrostatic pressure, which we had found earlier at Zurich. This demonstrated clearly that minute structural changes of the Y-Ba-Cu-O phases may have a very important influence on the physical properties. These findings also directly supported the ideas of K. Alex Müller (IBM, Zurich)20about the importance of the apical bond. Our experiment is a particularly clean one, because in contrast to the 123 phase, which shows a similar effect under the influence of oxygen nonstoichiometery, here no chemical parameters affecting ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to digital editions of The Scientist, as well as TS Digest, feature stories, more than 35 years of archives, and much more!
Already a member? Login Here
Image of a woman in a microbiology lab whose hair is caught on fire from a Bunsen burner.
April 1, 2025, Issue 1

Bunsen Burners and Bad Hair Days

Lab safety rules dictate that one must tie back long hair. Rosemarie Hansen learned the hard way when an open flame turned her locks into a lesson.

View this Issue
Conceptual image of biochemical laboratory sample preparation showing glassware and chemical formulas in the foreground and a scientist holding a pipette in the background.

Taking the Guesswork Out of Quality Control Standards

sartorius logo
An illustration of PFAS bubbles in front of a blue sky with clouds.

PFAS: The Forever Chemicals

sartorius logo
Unlocking the Unattainable in Gene Construction

Unlocking the Unattainable in Gene Construction

dna-script-primarylogo-digital
Concept illustration of acoustic waves and ripples.

Comparing Analytical Solutions for High-Throughput Drug Discovery

sciex

Products

Green Cooling

Thermo Scientific™ Centrifuges with GreenCool Technology

Thermo Fisher Logo
Singleron Avatar

Singleron Biotechnologies and Hamilton Bonaduz AG Announce the Launch of Tensor to Advance Single Cell Sequencing Automation

Zymo Research Logo

Zymo Research Launches Research Grant to Empower Mapping the RNome

Magid Haddouchi, PhD, CCO

Cytosurge Appoints Magid Haddouchi as Chief Commercial Officer