Magnetism and superconductivity in C15 compounds from self-consistent band calculations. [TiBe/sub 2/, ZrZn/sub 2/, ZrV/sub 2/, YaL/sub 2/]

Journal Article · Mon Sep 01 00:00:00 EDT 1980 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.22.2332· OSTI ID:5076401

Jarlborg, T; Freeman, A J

All-atom--all-electron self-consistent semirelativistic linear muffin-tin orbital energy-band studies are reported for TiBe/sub 2/, ZrZn/sub 2/ (at ambient and high pressures), the high-T/sub c/ superconductor ZrV/sub 2/, and the ultralow-T/sub c/ superconductor YAl/sub 2/. Total and partial (by atom type and l values) density of states, Stoner-like parameters, electron-phonon coupling parameter lambda and superconducting transition temperatures T/sub c/ (determined within the rigid muffin-tin approximation and McMillan's strong coupling theory with and without paramagnon contributions), and their behavior under applied pressure are used to discuss the origin of their observed magnetism and/or superconductivity. From an analysis of the results, we suggest possible high-T/sub c/ superconductivity at high pressure for ZrZn/sub 2/, and its unlikely occurrence for TiBe/sub 2/ unless dominant soft phonon modes exist.

• Research Organization: Physics Department, Northwestern University, Evanston, Illinois 60201
• OSTI ID: 5076401
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 22:5; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
BERYLLIUM ALLOYS
BERYLLIUM BASE ALLOYS
BINARY ALLOY SYSTEMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY-LEVEL DENSITY
INTERMETALLIC COMPOUNDS
MAGNETIC PROPERTIES
MUFFIN-TIN POTENTIAL
PHYSICAL PROPERTIES
POTENTIALS
PRESSURE DEPENDENCE
SUPERCONDUCTIVITY
TITANIUM ALLOYS
VANADIUM ALLOYS
VANADIUM BASE ALLOYS
YTTRIUM ALLOYS
ZINC ALLOYS
ZINC BASE ALLOYS
ZIRCONIUM ALLOYS