2011/10/13 by D. K. Singh, Deepak Singh, A. Thamizhavel +7 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Critical field #Electron #Fermi surface #Heavy fermion #Heavy fermion superconductor #Inorganic Chemistry and Materials #Iron-based superconductors research #Physics #Quantum #Quantum fluctuation #Quantum mechanics #Rare-earth and actinide compounds #Spin (aerodynamics) #Spin density wave #Strongly correlated material #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1038/srep00117
published as Scientific Report 1, 117 (2011) · Heavy Fermion, Quantum Critical Phenomenon
openalex publication_date 2011/10/13 · arxiv created 2012/04/19 · arxiv updated 2012/04/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Quantum-mechanical fluctuations in strongly correlated electron systems cause unconventional phenomena such as non-Fermi liquid behavior, and arguably high temperature superconductivity. Here we report the discovery of a field-tuned quantum critical phenomenon in stoichiometric CeCu(2)Ge(2), a spin density wave ordered heavy fermion metal that exhibits unconventional superconductivity under ≃10 GPa of applied pressure. Our finding of the associated quantum critical spin fluctuations of the antiferromagnetic spin density wave order, dominating the local fluctuations due to single-site Kondo effect, provide new information about the underlying mechanism that can be important in understanding superconductivity in this novel compound.