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

Low temperature specific heat has been measured and extensively analyzed on aseries of $La_{2-x}Sr_xCuO_4$ single crystals from underdoped to overdopedregime. From these data the quasiparticle density of states (DOS) in the mixedstate is derived and compared to the predicted scaling law$C_{vol}/T\sqrt{H}=f(T/\sqrt{H})$ of d-wave superconductivity. It is found thatthe scaling law can be nicely followed by the optimally doped sample (x=0.15)in quite wide region of ($T/\sqrt{H} \leq 8 K /\sqrt{T}$). However, the regionfor this scaling becomes smaller and smaller towards more underdoped region: aclear trend can be seen for samples from x=0.15 to 0.069. Therefore, generallyspeaking, the scaling quality becomes worse on the underdoped samples in termsof scalable region of $T/\sqrt{H}$. This feature in the underdoped region isexplained as due to the low energy excitations from a second order (forexample, anti-ferromagnetic correlation, d-density wave, spin density wave orcharge density wave order) that may co-exist or compete with superconductivity.Surprisingly, deviations from the d-wave scaling law have also been found forthe overdoped sample (x=0.22). While the scaling law is reconciled for theoverdoped sample when the core size effect is taken into account. An importantdiscovery of present work is that the zero-temperature data follow theVolovik's relation $\Delta \gamma(T=0)=A\sqrt{H}$ quite well for all samplesinvestigated here although the applicability of the d-wave scaling law to thedata at finite temperatures varies with doped hole concentration. Finally wepresent the doping dependence of some parameters, such as, the residual linearterm $\gamma_0$, the $\alpha$ value, etc. ...Comment: 15 pages, 24 figure

physical review. b, condensed matter and materials physics

Electronic specific heat and low-energy quasiparticle excitations in the superconducting state of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">La</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">Sr</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:mi mathvariant="normal">Cu</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml…

Electronic specific heat and low-energy quasiparticle excitations in the superconducting state ofLa2−xSrxCuO4