Results 11 to 20 of about 674,738 (298)

Locally critical quantum phase transitions in strongly correlated metals

open access: yesNature, 2001
When a metal undergoes a continuous quantum phase transition, non-Fermi liquid behaviour arises near the critical point. It is standard to assume that all low-energy degrees of freedom induced by quantum criticality are spatially extended, corresponding ...
A Georges   +40 more
core   +3 more sources

Quantum critical metals in $4-\epsilon$ dimensions [PDF]

open access: yes, 2014
We study the quantum theory of a Fermi surface coupled to a gapless boson scalar in $D=4-\epsilon$ spacetime dimensions as a simple model for non-Fermi liquids (NFL) near a quantum phase transition.
Torroba, Gonzalo, Wang, Huajia
core   +2 more sources

Critical behavior in spallation failure of metals [PDF]

open access: yes, 2001
Using molecular dynamics with an accurate many-body potential, we studied the rapid expansion of Ta metal following the high compression (50 to 100 GPa) induced by high velocity (2 to 4 km/s) impact.
Goddard, William A., III   +2 more
core   +1 more source

Critical Metals Hydrometallurgy [PDF]

open access: yesJOM, 2015
In 2013, the E.U. Ad hoc Working Group on Raw Materials published its second criticality analysis report. The motivation to write this report came from the observation that in today’s world, our economies become more and more dependent on a number of metals and raw materials. Achzet et al.
openaire   +1 more source

BCS superconductivity in quantum critical metals [PDF]

open access: yesPhysical Review B, 2009
Departing from the assumption that pairing is induced by an retarded external 'bosonic glue', we reformulate the Bardeen-Cooper-Schrieffer theory of superconductivity as a scaling theory. Conventional superconductors correspond with the asymptotically free case but the theory can be effortlessly generalized to handle quantum critical metals.
She, Jian-Huang, Zaanen, Jan
openaire   +2 more sources

Quantum criticality in heavy-fermion metals [PDF]

open access: yesNature Physics, 2008
Quantum criticality describes the collective fluctuations of matter undergoing a second-order phase transition at zero temperature. Heavy fermion metals have in recent years emerged as prototypical systems to study quantum critical points. There have been considerable efforts, both experimental and theoretical, which use these magnetic systems to ...
Gegenwart, Philipp   +2 more
openaire   +4 more sources

Observing the origin of superconductivity in quantum critical metals [PDF]

open access: yes, 2011
Despite intense efforts during the last 25 years, the physics of unconventional superconductors, including the cuprates with a very high transition temperature, is still a controversial subject.
Liu, Yan   +6 more
core   +3 more sources

Resistivity of a 2d quantum critical metal [PDF]

open access: yesPhysics Letters A, 2019
11 ...
Kumari, Komal   +2 more
openaire   +2 more sources

Responsible Sourcing of Critical Metals [PDF]

open access: yesElements, 2017
Most critical raw materials, such as the rare-earth elements (REEs), are starting products in long manufacturing supply chains. Unlike most consumers, geoscientists can become involved in responsible sourcing, including best environmental and social practices, because geology is related to environmental impact factors such as energy requirements ...
Wall, F, Rollat, A, Pell, R
openaire   +4 more sources

Effect of Melt Superheating Treatment on the Microstructures and Purity of a Directionally Solidified Superalloy

open access: yesCrystals, 2023
In this paper, the effects and the mechanisms of melt superheating treatment (MST) on a directionally solidified alloy were investigated. The mass loss rate of the superalloy becomes severe as the MST temperature rises.
Yi Li   +3 more
doaj   +1 more source

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