scispace - formally typeset
Search or ask a question
Topic

High-temperature superconductivity

About: High-temperature superconductivity is a research topic. Over the lifetime, 7263 publications have been published within this topic receiving 175377 citations. The topic is also known as: high-temperature superconductivity.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a brief review on the recent studies of the upper critical field and its anisotropy in a few typical series of the iron-based superconductors (FeSCs) is given.
Abstract: The newly discovered iron-based high temperature superconductors have demonstrated rich physical properties Here we give a brief review on the recent studies of the upper critical field and its anisotropy in a few typical series of the iron-based superconductors (FeSCs) In spite of their characters of a layered crystal structure, all the FeSCs possess an extremely large upper critical field and a weak anisotropy of superconductivity, being unique among the layered superconductors These particular properties indicate potential applications of the FeSCs in the future Based on the experimental facts of the FeSCs, we will discuss the possible mechanisms of pair breaking in high magnetic fields and its restrictions on the theoretical analysis of the superconducting pairing mechanisms

36 citations

Journal ArticleDOI
TL;DR: In this article, the magnetic penetration depth temperature dependence in YBa2Cu3O7−δ is not consistent with a simple scaled weak-coupled BCS temperature dependence, and three classes of interpretations of these measurements are discussed in terms of some theories of cuprate superconductivity.
Abstract: We examine recent results on measurements of the magnetic penetration depth in cuprate superconductors, with particular emphasis on our results obtained with the microstrip and parallel-plate resonator techniques. The results show that the magnetic penetration depth temperature dependence in YBa2Cu3O7−δ is not consistent with a simple scaled weak-coupled BCS temperature dependence. We present three classes of interpretations of these measurements, and how they relate to other experimental studies of the cuprates. Finally, these interpretations are discussed in terms of some theories of cuprate superconductivity.

36 citations

Journal ArticleDOI
TL;DR: In this paper, the authors review the recent progress of studies on heavy fermion superconductors, with an emphasis on the superconductivity emerging on the edge of magnetic and charge instabilities as well as the quantum phase transitions which occur by tuning different parameters, such as pressure, magnetic field and doping.
Abstract: Heavy fermions have served as prototype examples of strongly-correlated electron systems. The occurrence of unconventional superconductivity in close proximity to the electronic instabilities associated with various degrees of freedom points to an intricate relationship between superconductivity and other electronic states, which is unique but also shares some common features with high temperature superconductivity. The magnetic order in heavy fermion compounds can be continuously suppressed by tuning external parameters to a quantum critical point, and the role of quantum criticality in determining the properties of heavy fermion systems is an important unresolved issue. Here we review the recent progress of studies on Ce based heavy fermion superconductors, with an emphasis on the superconductivity emerging on the edge of magnetic and charge instabilities as well as the quantum phase transitions which occur by tuning different parameters, such as pressure, magnetic field and doping. We discuss systems where multiple quantum critical points occur and whether they can be classified in a unified manner, in particular in terms of the evolution of the Fermi surface topology.

36 citations

Journal ArticleDOI
TL;DR: In this paper, the microwave surface resistance of an YBa2Cu3O6.9 superconducting thick film was measured over the range 7.0-16.7 GHz at 77 K.
Abstract: The microwave surface resistance of an YBa2Cu3O6.9 superconducting thick film was measured over the range 7.0–16.7 GHz at 77 K. This was done by placing a sample in a TE01n wavemeter cavity and observing the change in selectivity of the cavity. The material’s surface resistance is of the same order of magnitude as that of silver at 77 K from 8 to 12 GHz and improves about another order at 4.2 K. The power‐law behavior of surface resistance with frequency is probably close to quadratic. This is similar to the behavior of low critical temperature superconductors.

36 citations


Network Information
Related Topics (5)
Magnetization
107.8K papers, 1.9M citations
89% related
Thin film
275.5K papers, 4.5M citations
84% related
Magnetic field
167.5K papers, 2.3M citations
82% related
Band gap
86.8K papers, 2.2M citations
82% related
Amorphous solid
117K papers, 2.2M citations
81% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202334
202258
202169
202084
201987
201883