DC conductivity with external magnetic field in hyperscaling violating geometry

We investigate the holographic DC conductivity of (2[Formula: see text]+[Formula: see text]1)-dimensional systems while considering hyperscaling violating geometry in bulk. We consider Einstein–Maxwell-dilaton system with two gauge fields and Liouville-type potential for dilaton. We also consider axionic fields in bulk to introduce momentum relaxation in the system. We apply an external magnetic field to study the response of the system and obtain analytic expressions for DC conductivity, Hall angle and (thermo)electric conductivity.

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ON ERNST BLACK HOLES WITH A DILATON POTENTIAL

Modern Physics Letters A ◽

10.1142/s0217732305017317 ◽

2005 ◽

Vol 20 (14) ◽

pp. 1077-1085 ◽

Cited By ~ 6

Author(s):

MARICEL AGOP ◽

EUGEN RADU ◽

REINOUD SLAGTER

Keyword(s):

Magnetic Field ◽

Black Holes ◽

Black Hole ◽

External Magnetic Field ◽

Thermodynamic Properties ◽

Action Principle ◽

Schwarzschild Black Hole ◽

Liouville Type ◽

Background Magnetic Field ◽

Type Potential

The dilatonic Ernst solution describing a Schwarzschild black hole immersed in a background magnetic field is generalized by including a Liouville-type potential in the action principle. We prove that the thermodynamic properties of this new black hole dilaton solution are unaffected by an external magnetic field passing through it.

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On Electrical Conductivity Measurements of Molten Metals by Inductive Technique

Journal of Fluids Engineering ◽

10.1115/1.1760542 ◽

2004 ◽

Vol 126 (3) ◽

pp. 468-470 ◽

Cited By ~ 3

Author(s):

Sayavur I. Bakhtiyarov ◽

Mihai Dupac ◽

Ruel A. Overfelt ◽

Sorin G. Teodorescu

Keyword(s):

Magnetic Field ◽

Experimental Data ◽

Electrical Conductivity ◽

Fluid Flow ◽

External Magnetic Field ◽

Electric Conductivity ◽

Molten Metals ◽

Conductivity Measurements ◽

Permanent Magnetic Field ◽

Rotating Liquid

In this paper, we propose a new relationship between the opposing mechanical torque and the electric conductivity of a rotating liquid specimen in a permanent external magnetic field of constant induction, which includes the effect of fluid flow. The proposed relationship was applied to describe the experimental data for a conductive specimens rotating in a permanent magnetic field.

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Fluid Flow Effect in Electrical Conductivity Measurements of Molten Metals by Inductive Technique

Volume 2: Symposia and General Papers, Parts A and B ◽

10.1115/fedsm2002-31446 ◽

2002 ◽

Author(s):

Sayavur I. Bakhtiyarov ◽

Mihai Dupac ◽

Ruel A. Overfelt ◽

Sorin G. Teodorescu

Keyword(s):

Magnetic Field ◽

Experimental Data ◽

Electrical Conductivity ◽

Fluid Flow ◽

External Magnetic Field ◽

Electric Conductivity ◽

Molten Metals ◽

Conductivity Measurements ◽

Permanent Magnetic Field ◽

Rotating Liquid

In this paper we propose a new relationship between the opposing mechanical torque and the electric conductivity of a rotating liquid specimen in a permanent external magnetic field of constant induction, which includes the effect of fluid flow. The proposed relationship was applied to describe the experimental data for a conductive specimen rotating in a permanent magnetic field.

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Numerical Simulations of Fluid Flow During Electromagnetic Stirring of Metals

10.1115/imece2001/fed-24920 ◽

2001 ◽

Author(s):

Sorin G. Teodorescu ◽

Mihai Dupac ◽

Sayavur I. Bakhtiyarov ◽

Ruel A. Overfelt

Keyword(s):

Magnetic Field ◽

Experimental Data ◽

Fluid Flow ◽

External Magnetic Field ◽

Numerical Simulations ◽

Electric Conductivity ◽

Electromagnetic Stirring ◽

Metal Sample ◽

Rotating Liquid ◽

Better Than

Abstract In this paper we propose a new relationship between the opposing mechanical torque and the electric conductivity of a rotating liquid specimen in a permanent external magnetic field of constant induction. It is shown that the proposed relationship describes the experimental data for a rotating specimen better than Braunbeck formula derived under the assumption that a magnetic field rotates around a stationary metal sample.

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Magneto-thermal transport implies an incoherent Hall conductivity

Journal of High Energy Physics ◽

10.1007/jhep08(2020)097 ◽

2020 ◽

Vol 2020 (8) ◽

Author(s):

Andrea Amoretti ◽

Daniel K. Brattan ◽

Nicodemo Magnoli ◽

Marcello Scanavino

Keyword(s):

Magnetic Field ◽

Black Hole ◽

External Magnetic Field ◽

Thermal Transport ◽

Transport Coefficient ◽

Hall Conductivity ◽

Order Zero ◽

Thermo Electric ◽

The Magnetic Field ◽

Thermal Conductivities

Abstract We consider magnetohydrodynamics with an external magnetic field. We find that in general one must allow for a non-zero incoherent Hall conductivity to correctly describe the DC longitudinal and Hall thermal conductivities beyond order zero in the magnetic field expansion. We apply our result to the dyonic black hole, determining the incoherent Hall conductivity in that case, and additionally prove that the existence of this transport coefficient leads to a significantly better match between the hydrodynamic and AC thermo-electric correlators.

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