Turbulent hydrodynamics in strongly correlated Kagome metals

Sante, Domenico Di; Erdmenger, Johanna; Greiter, Martin; Matthaiakakis, Ioannis; Meyer, René; Fernández, David Rodríguez; Thomale, Ronny; Loon, Erik G. C. P. van; Wehling, T. O.

doi:10.1038/s41467-020-17663-x

Cited by 35 publications

(19 citation statements)

References 56 publications

(100 reference statements)

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“…Theoretical results available for the kagome Hubbard model at the van Hove singularity [20,50] and in other regimes [51][52][53][54][55][56] may offer several interesting insights into the KV 3 Sb 5 physics. Spin bond order (triplet p-wave) embeds spin degrees of freedom in the form of spin currents that can not be detected via conventional probes, such as muon spectroscopy or neutron scattering [36], but may have influence on charge transport, including anomalous Hall effect.…”

Section: Discussionmentioning

confidence: 99%

Optical detection of charge-density-wave instability in the non-magnetic kagome metal KV$_3$Sb$_5$

Uykur,

Ortiz,

Wilson

et al. 2021

Preprint

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Optical spectroscopy and density-functional calculations reveal electronic properties of the nonmagnetic kagome metal KV3Sb5. Temperature and frequency-dependent optical measurements down to 10 K and up to 2 eV energy range confirm bulk nature of the charge-density-wave (CDW) state below 78 K and gauge the charge gap of ∆CDW ≈ 60 meV at 10 K. We further detect strong phonon anomalies and the prominent low-energy localization peak indicative of the unconventional charge transport caused by electron-phonon or electron-electron interactions. Possible CDW structures of KV3Sb5, the star and hexagon (inverse star), are strongly reminiscent of p-wave states expected in the Hubbard model on the kagome lattice at the filling level of the van Hove singularity. The proximity to this regime may have intriguing and far-reaching implications for the physics of KV3Sb5 and related materials.

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Section: Discussionmentioning

confidence: 99%

Optical detection of charge-density-wave instability in the non-magnetic kagome metal KV$_3$Sb$_5$

Uykur,

Ortiz,

Wilson

et al. 2021

Preprint

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“…the holographic computations in [179,180]). 55 Hydrodynamic behavior has been measured most reliably or has been the- oretically argued for in (2+1)-dimensional materials [182][183][184] where the parity anomaly leads to anomalous transport effects [93,[185][186][187][188]. Our discussion of (2+1)-dimensional hydrodynamics in section 2.5.2 will help relating our (3+1)-dimensional hydrodynamic transport effects to these lower dimensional experiments and theoretical descriptions.…”

Section: Jhep04(2021)078mentioning

confidence: 95%

Chiral hydrodynamics in strong external magnetic fields

Ammon

Grieninger

Hernandez

et al. 2021

J. High Energ. Phys.

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We construct the general hydrodynamic description of (3+1)-dimensional chiral charged (quantum) fluids subject to a strong external magnetic field with effective field theory methods. We determine the constitutive equations for the energy-momentum tensor and the axial charge current, in part from a generating functional. Furthermore, we derive the Kubo formulas which relate two-point functions of the energy-momentum tensor and charge current to 27 transport coefficients: 8 independent thermodynamic, 4 independent non-dissipative hydrodynamic, and 10 independent dissipative hydrodynamic transport coefficients. Five Onsager relations render 5 more transport coefficients dependent. We uncover four novel transport effects, which are encoded in what we call the shear-induced conductivity, the two expansion-induced longitudinal conductivities and the shear-induced Hall conductivity. Remarkably, the shear-induced Hall conductivity constitutes a novel non-dissipative transport effect. As a demonstration, we compute all transport coefficients explicitly in a strongly coupled quantum fluid via holography.

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“…Let us now solve Eqs. ( 31), (32), and (33). As one can see, these equations decouple and can be solved independently.…”

Section: B Solutions and Conductivitymentioning

confidence: 99%

“…We notice that these observations, however, do not directly rely on the relativisticlike spectrum of Weyl semimetals and demonstrate universal properties of electron hydrodynamics. In addition to Dirac and Weyl semimetals, strongly correlated systems such as kagome metals may provide a platform for electron hydrodynamics [33].…”

Section: Introductionmentioning

confidence: 99%

Anomalous Gurzhi effect

Sukhachov,

Trauzettel

2021

Preprint

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We investigate the role of the chiral anomaly in hydrodynamic and crossover regimes of transport in a Weyl or Dirac semimetal film. We show that the magnetic-field-dependent part of the electric conductivity in the direction of the magnetic field develops an unusual nonmonotonic dependence on temperature dubbed anomalous Gurzhi effect. This effect is realized in sufficiently clean semimetals subject to a classically-weak magnetic field where the electron-electron scattering dominates and the relaxation of the valley-imbalance charge density happens at the boundaries. Moreover, the conditions for the realization of the conventional Gurzhi effect in hydrodynamic and crossover regimes of transport in three-dimensional Dirac and Weyl semimetals are determined.

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Turbulent hydrodynamics in strongly correlated Kagome metals

Cited by 35 publications

References 56 publications

Optical detection of charge-density-wave instability in the non-magnetic kagome metal KV$_3$Sb$_5$

Optical detection of charge-density-wave instability in the non-magnetic kagome metal KV$_3$Sb$_5$

Chiral hydrodynamics in strong external magnetic fields

Anomalous Gurzhi effect

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