Conveners
Section S8: Strongly correlated electron systems, superconducting materials - PART 1
- Karol Flachbart (Institute of Experimental Physics, Slovak Academy of Sciences)
Section S8: Strongly correlated electron systems, superconducting materials - PART 2
- Ross Colman (Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University)
The search for room temperature superconductivity has accelerated dramatically in the last few years, driven largely by theoretical predictions that first indicated alloying dense hydrogen with other elements could produce conventional phonon-mediated superconductivity at very high temperatures and at accessible pressures. More recently, the success of structure search methods have...
In a series of papers Hirsch argues that the established theory of superconductivity describes neither the dynamics nor the thermodynamics of the Meissner effect in a type-I superconductor, if the magnetic field is switched on before the metal is cooled into the superconducting state. He finds that similar problems appear also when dealing with the process of magnetic field generation in...
Spin-valley locking allowing for in-plane upper critical magnetic fields vastly surpassing Pauli limit was first demonstrated in fully two-dimensional monolayers like of NbSe$_2$ [1] with large spin-orbit coupling and broken inversion symmetry. Surprisingly, this Ising superconductivity can be present in layered bulk materials, too. We have clarified the underlying microscopic mechanism of...
High Entropy Alloys (HEAs) are solid solutions of five or more elements mixed in non-negligible proportions. Their unique and very promising physical properties have attracted much attention since their discovery in $2004$. HEAs form well-defined, close-packed structures (BCC, FCC, HCP). Due to their structural features, HEAs are known for exceptional mechanical properties, thermal stability,...
This work describes the basic properties of MgB$_2$ ($2001$) and iron pnictide superconductors ($2008$) discovered in the third millennia. Magnetic and transport $J_c(B)$ and $R(T)$ measurements of superconducting wires made of these two materials have been done at low temperatures and external magnetic fields up to $12$ T [1-3]. While MgB$_2$ wires show promising behaviour for the windings...
Nowadays superconducting radio frequency (SRF) cavities represent fundamental tools used for (Standard Model) particle acceleration, (beyond Standard Model) particle probing, and long-lifetime photon preservation. We study their Quality factor properties mainly at low temperatures within the Dynes superconductor model [1]. We scrutinize and use the local limit response to the external...
Several conflicting predictions have been made for the symmetry of the pairing in transition metal dichalcogenide (TMD) superconductors. An indication of whether singlet or triplet pairing is present can be given by the upper critical field ($H_{c}$), the magnetic field required to fully supress superconductivity. Monolayer 1H-NbSe$_{2}$ and 1H-TaS$_{2}$ have extremely large critical fields,...
Non-centrosymmetric superconducting materials represent an exciting class of novel superconductors featuring a variety of unconventional properties, including mixed-parity pairing and very high upper critical fields. Here, we present a comprehensive study of TaIr$_2$B$_2$ (with $T_c = 5.1$ K), using a set of complementary experimental methods, including bulk- and surface-sensitive techniques....
