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

The optical conductivity of the heavy fermions UPd2Al3 and UPt3 has beenmeasured in the frequency range from 10 GHz to 1.2 THz (0.04 meV to 5 meV) attemperatures 1 K < T < 300 K. In both compounds a well pronounced pseudogap ofless than a meV develops in the optical response at low temperatures; we relatethis to the antiferromagnetic ordering. From the energy dependence of theeffective electronic mass and scattering rate we derive the energies essentialfor the heavy quasiparticle. We find that the enhancement of the mass mainlyoccurs below the energy which is related to magnetic correlations between thelocal magnetic moments and the itinerant electrons. This implies that themagnetic order in these compounds is the pre-requisite to the formation of theheavy quasiparticle and eventually of superconductivity.Comment: RevTeX, 4 pages, 3 figures, email:  dressel@pi1.physik.uni-stuttgart.d

physical review letters

Nature of Heavy Quasiparticles in Magnetically Ordered Heavy Fermions<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>UPd</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Al</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:…

Nature of Heavy Quasiparticles in Magnetically Ordered Heavy FermionsUPd2Al3and