Three-dimensional Dirac cone carrier dynamics in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Na</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi>Bi</mml:mi></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cd</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>As</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Jenkins, Gregory S.; Lane, Christopher; Barbiellini, B.; Sushkov, A. B.; Carey, Remington; Liu, Fengguang; Krizan, Jason W.; Kushwaha, Satya; Gibson, Quinn; Chang, Tay-Rong; Jeng, Horng Tay; Lin, Hsin; Cava, R. J.; Bansil, Arun; Drew, H. D.

doi:10.1103/physrevb.94.085121

Cited by 66 publications

(52 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance it has been claimed that the lack of a threshold for Dirac cone interband transitions at 2E F in the purported Dirac system Na 3 Bi is due to very large Dirac cone anisotropies (Jenkins et al, 2016). Moreover, it is not clear that even if materials like YbMnBi 2 are T breaking Weyl semimetals it is possible to see linear in ω optical conductivity due to certain nonidealities that are certainly present in their bandstructures and the presence of non-toplogical bands Chinotti et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

“…Jenkins et al, 2016 observed the presence of side-band feature in the optical response of the Dirac semi-metal candidate Na 3 Bi that they assign to a coupled quasiparticle-plasmon excitation e.g. a plasmaron (Lundqvist, 1967) that has also been seen in the optical conductivity of the massive Dirac semi-metal elemental bismuth (Armitage et al, 2010;Tediosi et al, 2007).…”

Section: Methodsmentioning

confidence: 99%

“…40 implies a logarithmic divergence of the real part of the dielectric constant through KramersKronig considerations (Jenkins et al, 2016;Rosenstein and Lewkowicz, 2013). The corresponding imaginary conductivity is…”

Section: General Considerationsmentioning

confidence: 99%

See 2 more Smart Citations

Weyl and Dirac semimetals in three-dimensional solids

2018

View full text Add to dashboard Cite

Weyl and Dirac semimetals are three dimensional phases of matter with gapless electronic excitations that are protected by topology and symmetry. As three dimensional analogs of graphene, they have generated much recent interest. Deep connections exist with particle physics models of relativistic chiral fermions, and -despite their gaplessness -to solid-state topological and Chern insulators. Their characteristic electronic properties lead to protected surface states and novel responses to applied electric and magnetic fields. The theoretical foundations of these phases, their proposed realizations in solid state systems, recent experiments on candidate materials, as well as their relation to other states of matter are reviewed.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Weyl and Dirac semimetals in three-dimensional solids

2018

View full text Add to dashboard Cite

show abstract

“…Surprisingly the mobility in this regime is only ∼ 300 cm 2 /Vs at room temperature, much lower than other Dirac systems limited by electron-phonon scattering [22,23]. The low mobility magnitude and strong temperature dependence may imply that low-frequency optical phonon modes in Na 3 Bi are important scatterers [24]. The strong electron-phonon scattering also indicates that lower temperatures and Fermi energies are needed to observe effects of temperaturedependent screening.…”

mentioning

confidence: 85%

Temperature-dependent n−p transition in a three-dimensional Dirac semimetal Na3Bi thin film

et al. 2017

View full text Add to dashboard Cite

We study the temperature dependence (77 K -475 K) of the longitudinal resistivity and Hall coefficient of thin films (thickness 20 nm) of three dimensional topological Dirac semimetal Na 3 Bi grown via molecular beam epitaxy (MBE). The temperature-dependent Hall coefficient is electron-like at low temperature, but transitions to hole-like transport around 200 K. We develop a model of a Dirac band with electron-hole asymmetry in Fermi velocity and mobility (assumed proportional to the square of Fermi velocity) which explains well the magnitude and temperature dependence of the Hall resistivity. We find that the hole mobility is about 7 times larger than the electron mobility. In addition, we find that the electron mobility decreases significantly with increasing temperature, suggesting electron-phonon scattering strongly limits the room temperature mobility.

show abstract

“…Note that the quantum oscillations in the magnetoplasmon mode presented in Fig. 1 are not affected by internodal scattering [29,55]. Internodal scattering corresponds to a momentum transfer between different Dirac points that is typically much larger than the Fermi momentum.…”

Section: A Three-dimensional Semimetalsmentioning

confidence: 99%

Quantum oscillations in Dirac magnetoplasmons

Hofmann

2019

Phys. Rev. B

View full text Add to dashboard Cite

The plasmon frequency in standard electron gases with a parabolic single-particle dispersion is a purely classical quantity that is not sensitive to electron interactions or the equation of state. We demonstrate that this canonical result no longer holds for plasmons in three-dimensional semimetals, which can thus be used to probe many-body effects in these systems. In particular, we show that the plasmon frequency in an external magnetic field displays quantum oscillations, which is not the case for the electron gas. Using the random phase approximation, results are presented for the magnetoplasmon dispersion and the loss function in Dirac semimetals. We include a full discussion of the loss function in a magnetic field as a function of the direction of propagation with respect to the magnetic field direction and discuss the transition from large magnetic fields to the low-field limit.

show abstract

Three-dimensional Dirac cone carrier dynamics inNa3BiandCd3As2

Cited by 66 publications

References 60 publications

Weyl and Dirac semimetals in three-dimensional solids

Weyl and Dirac semimetals in three-dimensional solids

Temperature-dependent n−p transition in a three-dimensional Dirac semimetal Na3Bi thin film

Quantum oscillations in Dirac magnetoplasmons

Contact Info

Product

Resources

About