Periodic Anderson model for magnetism and superconductivity in UTe2
نویسندگان
چکیده
منابع مشابه
d-wave superconductivity in the frustrated two-dimensional periodic Anderson model
Superconductivity in heavy-fermion materials can sometimes appear in the incoherent regime and in proximity to an antiferromagnetic quantum critical point. Here, we study these phenomena using largescale determinant quantum Monte Carlo simulations and the dynamical cluster approximation with various impurity solvers for the periodic Anderson model with frustrated hybridization. We obtain solid ...
متن کاملProtracted screening in the periodic Anderson model
The asymmetric infinite-dimensional periodic Anderson model is examined with a quantum Monte Carlo simulation. For small conduction band filling, we find a severe reduction in the Kondo scale, compared to the impurity value, as well as protracted spin screening consistent with some recent controversial photoemission experiments. The Kondo screening drives a ferromagnetic transition when the con...
متن کاملFerromagnetism in the Periodic Anderson Model
We compare different approximation schemes for investigating ferromagnetism in the periodic Anderson model. The use of several approximations allows for a detailed analysis of the implications of the respective methods, and also of the mechanisms driving the ferromagnetic transition. For the Kondo limit, our results confirm a previously proposed mechanism leading to ferromagnetic order, namely ...
متن کاملUnconventional superconductivity and magnetism in CePt3Si1−xGex
CePt3Si is a novel ternary compound exhibiting antiferromagnetic order at TN ≈ 2.2 K and superconductivity (SC) at Tc ≈ 0.75 K. Large values of H ′ c2 ≈ −8.5 T/K and Hc2(0) ≈ 5 T indicate Cooper pairs formed out of heavy quasiparticles. The mass enhancement originates from Kondo interaction with a characteristic temperature TK ≈ 8 K. NMR and μSRmeasurements evidence coexistence of SC and long r...
متن کاملUnified origin for the 3D magnetism and superconductivity in NaxCoO2.
We analyze the origin of the three-dimensional (3D) magnetism observed in nonhydrated Na-rich Na(x)CoO2 within an itinerant spin picture using a 3D Hubbard model. The origin is identified as the 3D nesting between the inner and outer portions of the Fermi surface, which arise due to the local minimum structure of the a(1g) band at the Gamma-A line. The calculated spin wave dispersion strikingly...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2021
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.103.094504