$FERMI fermi

Latest papers

1. Proton acceleration at interplanetary shocks: A numerical study for the HENON mission physics.space-ph · 19 Oct · 1 hit

   …move in the drift approximation around a parallel shock transition and gain energy through a first-order Fermi process at each crossing. They can propagate around the shock either diffusively or superdiffusively;…

2. Categorical classification of non-Fermi liquids in 2+1 dimensions cond-mat.str-el · 19 Oct · 8 hits

   A defining feature of non-Fermi liquids is a lack of the quasiparticle peak on the Fermi surface in the spectral function, which is…

3. Hyperonic Direct-Urca Neutrino Emission with Lattice-QCD-Informed Form Factors astro-ph.HE · 18 Oct · 1 hit

   …channels. Evaluating the latter both at $q^2=0$ and at the kinetic momentum transfer sampled at the Fermi surfaces separates changes in the zero-momentum couplings from momentum-transfer effects. The…

4. Thermal Responses of Spin Density and Spin Current Induced by Bogoliubov Fermi Surfaces in Proximity Superconductors cond-mat.supr-con · 18 Oct · 5 hits

   The emergence of Bogoliubov Fermi surfaces in s-wave proximity superconducting systems provides a unique platform for generating…

5. Instability-driven segregation of V group transition metals on HEB$_2$ grain boundaries influencing enhanced mechanical properties cond-mat.mtrl-sci · 18 Oct · 4 hits

   …of GBs, ranging from 0.8 to 2.7 compared to 2.5--4.8~J/m$^2$. COHP shows a significant difference at the Fermi level, namely the Me--B bonds of NbB$_2$ and TaB$_2$ are antibonding at Fermi energy ($E_F$) in the…

6. Upper Bound on the Correlation Energy of a Dense Fermi Gas in the Thermodynamic Limit math-ph · 18 Oct · 3 hits

   …approximation provides an upper bound on the correlation energy of a three-dimensional, weakly interacting, Fermi gas in the thermodynamic limit at high density. More precisely, we consider a mean-field scaling regime…

7. Response theory at low temperature for weakly interacting quantum spin systems math-ph · 18 Oct · 1 hit

   …interacting quantum spin systems and derive response theory at positive temperature, thereby covering non-Fermi systems for the first time. Our proof identifies and exploits the locality property of local…

8. Frustration-Assisted Electrical Switching in $Co_xTaS_2$ cond-mat.str-el · 18 Oct · 1 hit

   …the crystals exhibit no resolved spontaneous Hall response, they retain van Hove singularities near the Fermi level and order antiferromagnetically below $T_N \simeq 31.5 K$. Current pulses write nonvolatile…