English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

It is known that itinerant metamagnetic transitions can be driven by featuresin the electronic density of states. We study the signatures of thesetransitions in the entropy and specific heat for a variety of different cases,identifying the key features which differ from naive expectations, such asenhanced critical fields and non-Fermi liquid temperature dependencies. Webegin with the generic case of a logarithmically divergent density of states,as caused by a two dimensional van Hove singularity. We then study a specificmodel for the bandstructure of Sr3Ru2O7, a material with a well-studiedmetamagnetic transition and quantum critical endpoint. We consider how far thebehaviour of the system can be explained by the density of states rather thanquantum fluctuations, and the distinctive features of this mechanism. One ofthe characteristic features of Sr3Ru2O7 is an unusual phase with a higherentropy than its surroundings, we consider how this may arise in the context ofa density of states picture and find that we can reproduce the thermodynamicbehaviour and first-order phase transitions.

The role of bandstructure in the thermodynamic properties of itinerant metamagnets