scholarly journals Resonant magnetic exciton mode in the heavy-fermion antiferromagnet CeB6

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
G. Friemel ◽  
Yuan Li ◽  
A.V. Dukhnenko ◽  
N.Y. Shitsevalova ◽  
N.E. Sluchanko ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Exciton Mode

scholarly journals Electronic structure of the quadrupolar ordered heavy-fermion compound YbRu2Ge2 measured by angle-resolved photoemission

2019 ◽  
Vol 99 (7) ◽  
Author(s):  
H. Pfau ◽  
E. W. Rosenberg ◽  
P. Massat ◽  
B. Moritz ◽  
M. Hashimoto ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Heavy Fermion ◽  
Heavy Fermion Compound

scholarly journals Thin film growth of heavy fermion chiral magnet YbNi3Al9

2021 ◽  
Vol 118 (10) ◽  
pp. 102402
Author(s):  
Hiroaki Shishido ◽  
Akira Okumura ◽  
Tatsuya Saimyoji ◽  
Shota Nakamura ◽  
Shigeo Ohara ◽  
...  
Keyword(s):  
Thin Film ◽  
Heavy Fermion ◽  
Film Growth ◽  
Thin Film Growth

scholarly journals The fermionic universal one-loop effective action

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Sebastian A. R. Ellis ◽  
Jérémie Quevillon ◽  
Pham Ngoc Hoa Vuong ◽  
Tevong You ◽  
Zhengkang Zhang
Keyword(s):  
Path Integral ◽  
Effective Action ◽  
Covariant Derivative ◽  
Heavy Fermion ◽  
Axial Vector ◽  
Derivative Expansion ◽  
Universal Structure ◽  
Pseudo Scalar ◽  
Matching Techniques ◽  
Analytical Expressions

Abstract Recent development of path integral matching techniques based on the covariant derivative expansion has made manifest a universal structure of one-loop effective Lagrangians. The universal terms can be computed once and for all to serve as a reference for one-loop matching calculations and to ease their automation. Here we present the fermionic universal one-loop effective action (UOLEA), resulting from integrating out heavy fermions (Dirac or Majorana) with scalar, pseudo-scalar, vector and axial-vector couplings. We also clarify the relation of the new terms computed here to terms previously computed in the literature and those that remain to complete the UOLEA. Our results can be readily used to efficiently obtain analytical expressions for effective operators arising from heavy fermion loops [13].

scholarly journals Multiorbital singlet pairing and d + d superconductivity

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Emilian M. Nica ◽  
Qimiao Si
Keyword(s):  
Time Reversal ◽  
Heavy Fermion ◽  
Degrees Of Freedom ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Matrix Structure ◽  
Spin Singlet ◽  
Low Energies ◽  
Triplet Pairing ◽  
Orbital Space

AbstractRecent experiments in multiband Fe-based and heavy-fermion superconductors have challenged the long-held dichotomy between simple s- and d-wave spin-singlet pairing states. Here, we advance several time-reversal-invariant irreducible pairings that go beyond the standard singlet functions through a matrix structure in the band/orbital space, and elucidate their naturalness in multiband systems. We consider the sτ3 multiorbital superconducting state for Fe-chalcogenide superconductors. This state, corresponding to a d + d intra- and inter-band pairing, is shown to contrast with the more familiar d + id state in a way analogous to how the B- triplet pairing phase of 3He superfluid differs from its A- phase counterpart. In addition, we construct an analog of the sτ3 pairing for the heavy-fermion superconductor CeCu2Si2, using degrees-of-freedom that incorporate spin-orbit coupling. Our results lead to the proposition that d-wave superconductors in correlated multiband systems will generically have a fully-gapped Fermi surface when they are examined at sufficiently low energies.

scholarly journals Distinct Kondo Screening Behaviors in Heavy Fermion Filled Skutterudites with 4f1 and 4f2 Configurations

2021 ◽  
Vol 126 (13) ◽  
Author(s):  
X. Lou ◽  
T. L. Yu ◽  
Y. H. Song ◽  
C. H. P. Wen ◽  
W. Z. Wei ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Filled Skutterudites ◽  
Screening Behaviors ◽  
Kondo Screening

scholarly journals Hyperfine couplings as a probe of orbital anisotropy in heavy-fermion materials

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
P. Menegasso ◽  
J. C. Souza ◽  
I. Vinograd ◽  
Z. Wang ◽  
S. P. Edwards ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Heavy Fermion Materials ◽  
Hyperfine Couplings

scholarly journals Spin-excitons in heavy-fermion semimetals

2016 ◽  
Vol 400 ◽  
pp. 3-6 ◽  
Author(s):  
Peter S. Riseborough ◽  
S.G. Magalhaes
Keyword(s):  
Heavy Fermion
Sign in / Sign up

Export Citation Format

Share Document