scholarly journals Anomalous transport of Weyl fermions in Weyl semimetals

2014 ◽  
Vol 89 (7) ◽  
Author(s):  
Karl Landsteiner
Keyword(s):  
Anomalous Transport ◽  
Weyl Semimetals ◽  
Weyl Fermions

scholarly journals Semiclassical theory of anomalous transport in type-II topological Weyl semimetals

2017 ◽  
Vol 96 (23) ◽  
Author(s):  
Timothy M. McCormick ◽  
Robert C. McKay ◽  
Nandini Trivedi
Keyword(s):  
Anomalous Transport ◽  
Type Ii ◽  
Semiclassical Theory ◽  
Weyl Semimetals

scholarly journals New type of Weyl semimetal with quadratic double Weyl fermions

2016 ◽  
Vol 113 (5) ◽  
pp. 1180-1185 ◽  
Author(s):  
Shin-Ming Huang ◽  
Su-Yang Xu ◽  
Ilya Belopolski ◽  
Chi-Cheng Lee ◽  
Guoqing Chang ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Experimental Realization ◽  
Weyl Semimetal ◽  
Chiral Magnetic Effect ◽  
Wide Range ◽  
Weyl Semimetals ◽  
Weyl Fermions

Weyl semimetals have attracted worldwide attention due to their wide range of exotic properties predicted in theories. The experimental realization had remained elusive for a long time despite much effort. Very recently, the first Weyl semimetal has been discovered in an inversion-breaking, stoichiometric solid TaAs. So far, the TaAs class remains the only Weyl semimetal available in real materials. To facilitate the transition of Weyl semimetals from the realm of purely theoretical interest to the realm of experimental studies and device applications, it is of crucial importance to identify other robust candidates that are experimentally feasible to be realized. In this paper, we propose such a Weyl semimetal candidate in an inversion-breaking, stoichiometric compound strontium silicide, SrSi2, with many new and novel properties that are distinct from TaAs. We show that SrSi2 is a Weyl semimetal even without spin–orbit coupling and that, after the inclusion of spin–orbit coupling, two Weyl fermions stick together forming an exotic double Weyl fermion with quadratic dispersions and a higher chiral charge of ±2. Moreover, we find that the Weyl nodes with opposite charges are located at different energies due to the absence of mirror symmetry in SrSi2, paving the way for the realization of the chiral magnetic effect. Our systematic results not only identify a much-needed robust Weyl semimetal candidate but also open the door to new topological Weyl physics that is not possible in TaAs.

scholarly journals Anomalous transport properties of Dirac and Weyl semimetals (Review Article)

2018 ◽  
Vol 44 (6) ◽  
pp. 487-505 ◽  
Author(s):  
E. V. Gorbar ◽  
V. A. Miransky ◽  
I. A. Shovkovy ◽  
P. O. Sukhachov
Keyword(s):  
Transport Properties ◽  
Review Article ◽  
Anomalous Transport ◽  
Weyl Semimetals

scholarly journals Anomaly Non-renormalization in Interacting Weyl Semimetals

2021 ◽  
Author(s):  
Alessandro Giuliani ◽  
Vieri Mastropietro ◽  
Marcello Porta
Keyword(s):  
Condensed Matter ◽  
Interaction Strength ◽  
Lattice Models ◽  
Chiral Anomaly ◽  
Quasi Particle ◽  
Weyl Semimetals ◽  
Infrared Limit ◽  
Quadratic Response ◽  
Relativistic Description ◽  
Weyl Fermions

AbstractWeyl semimetals are 3D condensed matter systems characterized by a degenerate Fermi surface, consisting of a pair of ‘Weyl nodes’. Correspondingly, in the infrared limit, these systems behave effectively as Weyl fermions in $$3+1$$ 3 + 1 dimensions. We consider a class of interacting 3D lattice models for Weyl semimetals and prove that the quadratic response of the quasi-particle flow between the Weyl nodes is universal, that is, independent of the interaction strength and form. Universality is the counterpart of the Adler–Bardeen non-renormalization property of the chiral anomaly for the infrared emergent description, which is proved here in the presence of a lattice and at a non-perturbative level. Our proof relies on constructive bounds for the Euclidean ground state correlations combined with lattice Ward Identities, and it is valid arbitrarily close to the critical point where the Weyl points merge and the relativistic description breaks down.

scholarly journals Quantum Anomalies (in) Matter

2022 ◽  
Vol 258 ◽  
pp. 10003
Author(s):  
Karl Landsteiner
Keyword(s):  
Quark Gluon Plasma ◽  
Transport Theory ◽  
Transport Phenomena ◽  
Gluon Plasma ◽  
Anomalous Transport ◽  
Weyl Semimetals ◽  
Quantum Anomalies ◽  
Relativistic Matter

Over the last decade it has bee realized that triangle anomalies give rise to dissipationless transport phenomena in hot and dense relativistic matter. I will review anomalous transport theory and then discuss its applications to the quark gluon plasma and the electronics of Weyl semimetals. Finally I briefly discuss the absence of genuine chiral torsional transport.

Development of Sustained Release Multi-Component Microparticulate System of Diclofenac Sodium and Tizanidine Hydrochloride

1970 ◽  
Vol 1 (1) ◽  
pp. 97-105
Author(s):  
Kamlesh Dashora ◽  
Shailendra Saraf ◽  
Swarnalata Saraf
Keyword(s):  
Particle Size ◽  
Sustained Release ◽  
Cellulose Acetate ◽  
Rate Constant ◽  
Diclofenac Sodium ◽  
Order Rate Constant ◽  
Anomalous Transport ◽  
First Order ◽  
Sem Study ◽  
Transport Type

Sustained released tablets of diclofenac sodium (DIC) and tizanidine hydrochloride (TIZ) were prepared by using different proportions of cellulose acetate (CA) as the retardant material. Nine formulations of tablets having different proportion of microparticles developed by varied proportions of polymer: drug ratio ‘’i.e.’’; 1:9 -1:3 for DIC and 1:1 – 3:1 for TIZ. Each tablet contained equivalent to 100 mg of DIC and 6mg of TIZ. The prepared microparticles were white, free flowing and spherical in shape (SEM study), with  the particle size varying from 78.8±1.94 to 103.33±1.28 µm and 175.92± 9.82 to 194.94±14.28µm for DIC  and TIZ, respectively.  The first order rate constant K1 of formulations were found to be in the range of  K1 = 0.117-0.272 and 0.083- 0.189 %hr-1for DIC and TIZ, respectively. The value of exponent coefficient (n) was found to be in the range of 0.6328-0.9412  and 0.8589-1.1954 for DIC and TIZ respectively indicates anomalous  to  non anomalous transport type of diffusions among different formulations

scholarly journals Optoelectronic response of the type-I Weyl semimetals TaAs and NbAs from first principles

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Christina A. C. Garcia ◽  
Jennifer Coulter ◽  
Prineha Narang
Keyword(s):  
First Principles ◽  
Type I ◽  
Weyl Semimetals
Sign in / Sign up

Export Citation Format

Share Document