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

We use numerical linked cluster (NLC) expansions to compute the specificheat, C(T), and entropy, S(T), of a quantum spin ice model of Yb2Ti2O7 usinganisotropic exchange interactions recently determined from inelastic neutronscattering measurements and find good agreement with experimental calorimetricdata. In the perturbative weak quantum regime, this model has a ferrimagneticordered ground state, with two peaks in C(T): a Schottky anomaly signalling theparamagnetic to spin ice crossover followed at lower temperature by a sharppeak accompanying a first order phase transition to the ferrimagnetic state. Wesuggest that the two C(T) features observed in Yb2Ti2O7 are associated with thesame physics. Spin excitations in this regime consist of weakly confinedspinon-antispinon pairs. We suggest that conventional ground state with exoticquantum dynamics will prove a prevalent characteristic of many real quantumspin ice materials.

Is the Yb2Ti2O7 pyrochlore a quantum spin ice?