Publication

Properties of high-Tc cuprates: some recent results and open questions

Davor Pavuna
1999
Journal Articles

Abstract

Thirteen years ago, late in 1986, several groups confirmed striking claims of the famous paper by Bednorz and Muller [see Z Phys. B, vol.64, p.189 (1986)] that announced the discovery of high-Tc superconductivity in cuprates. Some 60000 papers later, we are still struggling to understand the high-Tc oxide superconductivity. We present some of the most relevant recent experiments and discuss some open questions across rather complex electronic phase diagram; we also note an important role of un-intentional and intentional disorder in these layered, high-Tc oxides

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https://infoscience.epfl.ch/entities/publication/01599251-a35d-4da3-9162-798cf6fe874a

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Davor Pavuna
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/01599251-a35d-4da3-9162-798cf6fe874a

About this result

Related concepts (17)

High-temperature superconductivity

High-temperature superconductors (abbreviated high-Tc or HTS) are defined as materials with critical temperature (the temperature below which the material behaves as a superconductor) above , the boiling point of liquid nitrogen. They are only "high-temperature" relative to previously known superconductors, which function at even colder temperatures, close to absolute zero. The "high temperatures" are still far below ambient (room temperature), and therefore require cooling.

Unconventional superconductor

Unconventional superconductors are materials that display superconductivity which does not conform to conventional BCS theory or its extensions. The superconducting properties of CeCu2Si2, a type of heavy fermion material, were reported in 1979 by Frank Steglich. For a long time it was believed that CeCu2Si2 was a singlet d-wave superconductor, but since the mid 2010s, this notion has been strongly contested. In the early eighties, many more unconventional, heavy fermion superconductors were discovered, including UBe13, UPt3 and URu2Si2.

Yttrium barium copper oxide

Yttrium barium copper oxide (YBCO) is a family of crystalline chemical compounds that display high-temperature superconductivity; it includes the first material ever discovered to become superconducting above the boiling point of liquid nitrogen (77 K) at about . Many YBCO compounds have the general formula YBa2Cu3O7−x (also known as Y123), although materials with other Y:Ba:Cu ratios exist, such as YBa2Cu4Oy (Y124) or Y2Ba4Cu7Oy (Y247). At present, there is no singularly recognised theory for high-temperature superconductivity.

Related publications (15)

Properties of high-Tc cuprates: some recent results and open questions

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