Magnetic field-controlled lattice thermal conductivity in MnBi2Te4
- URL: http://arxiv.org/abs/2203.08032v2
- Date: Wed, 4 Jan 2023 16:18:34 GMT
- Title: Magnetic field-controlled lattice thermal conductivity in MnBi2Te4
- Authors: Dung D. Vu, Ryan A. Nelson, Brandi L. Wooten, Joseph Barker, Joshua E.
Goldberger, Joseph P. Heremans
- Abstract summary: We discover a new way to control the lattice thermal conductivity, generating both a positive and a negative magnetic field dependence.
This finding may open a way to design magnetically controlled heat switches.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Phonon properties and the lattice thermal conductivity are not generally
understood to be sensitive to magnetic fields. Using an applied field to change
MnBi2Te4 between antiferromagnetic (AFM), canted (CAFM) and ferromagnetic (FM)
phases we discovered a new way to control the lattice thermal conductivity,
generating both a positive and a negative magnetic field dependence. We report
the field dependence of the thermal conductivity, k, in the in-plane direction
under an applied magnetic field along the cross-plane direction in MnBi2Te4
from 2K to 30K. k decreases with field in the AFM phase, saturates in the CAFM
phase, and increases with field in the FM phase. We explain this in terms of
the field-induced changes of the magnon gap which modifies which magnon-phonon
scattering processes are allowed by energy conservation. We also report
magneto-Seebeck coefficient, Nernst coefficient and thermal Hall data measured
in the same configuration. This finding may open a way to design magnetically
controlled heat switches.
Related papers
- Néel Spin-Orbit Torque in Antiferromagnetic Quantum Spin and Anomalous Hall Insulators [8.361642692363516]
topological phases support a staggered Edelstein effect through which an applied electric field can generate opposite non-equilibrium spins on the two AFM sublattices.
Our findings unravel an incredible way to exploit AFM topological phases to achieve ultrafast magnetic dynamics.
arXiv Detail & Related papers (2024-10-29T05:36:56Z) - Real-time Simultaneous Dual Sensing of Temperature and Magnetic Field using NV-based Nano-diamonds [0.0]
Quantum sensors based on Nitrogen Vacancy (NV) centers in diamond are highly capable of sensing multiple physical quantities.
We present NVNDs' capacity to simultaneously sense both thermal and magnetic fields in real time.
arXiv Detail & Related papers (2024-08-30T17:07:33Z) - Decoherence induced by dipole-dipole couplings between atomic species in rare-earth ion-doped Y$_2$SiO$_5$ [0.0]
We investigate the relationship between the magnetic field parameters and the decoherence caused by magnetic dipole-dipole coupling.
This work allows us to pinpoint the most relevant decoherence mechanisms in the considered magnetic field regime.
arXiv Detail & Related papers (2024-08-04T08:26:03Z) - Out-of-plane magnetic phase diagram of Kitaev quantum spin liquid candidate Na2Co2TeO6 [5.334461349332468]
We map out the phase diagram of the honeycomb magnet Na2Co2TeO6 with Co 3d7 in out-of-plane magnetic fields.
Data can be explained by an XXZ model with a single ion anisotropy and possibly small Kitaev and Gamma exchange interactions.
arXiv Detail & Related papers (2024-05-22T19:06:48Z) - Imaging magnetism evolution of magnetite to megabar pressure range with
quantum sensors in diamond anvil cell [57.91882523720623]
We develop an in-situ magnetic detection technique at megabar pressures with high sensitivity and sub-microscale spatial resolution.
We observe the macroscopic magnetic transition of Fe3O4 in the megabar pressure range from strong ferromagnetism (alpha-Fe3O4) to weak ferromagnetism (beta-Fe3O4) and finally to non-magnetism (gamma-Fe3O4)
The presented method can potentially investigate the spin-orbital coupling and magnetism-superconductivity competition in magnetic systems.
arXiv Detail & Related papers (2023-06-13T15:19:22Z) - Non-volatile Electric Control of Magnetic and Topological Properties of
MnBi2Te4 Thin Films [66.02797153096846]
We propose a mechanism to control the magnetic properties of topological quantum material (TQM) by using magnetoelectric coupling.
This mechanism uses a heterostructure of TQM with two-dimensional (2D) ferroelectric material.
arXiv Detail & Related papers (2022-12-29T14:51:05Z) - Photon Condensation and Enhanced Magnetism in Cavity QED [68.8204255655161]
A system of magnetic molecules coupled to microwave cavities undergoes the equilibrium superradiant phase transition.
The effect of the coupling is first illustrated by the vacuum-induced ferromagnetic order in a quantum Ising model.
A transmission experiment is shown to resolve the transition, measuring the quantum electrodynamical control of magnetism.
arXiv Detail & Related papers (2020-11-07T11:18:24Z) - Tuning resonance energy transfer with magneto-optical properties of
graphene [0.0]
We investigate the resonance energy transfer rate between two quantum emitters near a suspended graphene sheet in vacuum.
Due to the extraordinary magneto-optical response of graphene, it allows for an active control and tunability of the RET.
Our results suggest that magneto-optical media may take the manipulation of energy transfer between quantum emitters to a whole new level.
arXiv Detail & Related papers (2020-10-19T20:15:55Z) - Ferromagnetic Gyroscopes for Tests of Fundamental Physics [49.853792068336034]
A ferromagnetic gyroscope (FG) is a ferromagnet whose angular momentum is dominated by electron spin polarization and that will precess under the action of an external torque.
We model and analyze FG dynamics and sensitivity, focusing on practical schemes for experimental realization.
arXiv Detail & Related papers (2020-10-17T07:13:50Z) - Direct control of high magnetic fields for cold atom experiments based
on NV centers [50.591267188664666]
In cold atomic gases the interactions between the atoms are directly controllable through external magnetic fields.
Here, we overcome the limitations of such an indirect control through a direct feedback scheme.
We achieve a control of better than 1 ppm after 20 minutes of integration time, ensuring high long-term stability for experiments.
arXiv Detail & Related papers (2020-03-18T09:03:25Z) - Optimal coupling of HoW$_{10}$ molecular magnets to superconducting
circuits near spin clock transitions [85.83811987257297]
We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides.
Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
arXiv Detail & Related papers (2019-11-18T11:03:06Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.