Single-Scale Magnetoelastic Landau Quantization: Thermodynamics, Quantum Oscillations, and Metrology

• URL: http://arxiv.org/abs/2510.19637v1
• Date: Wed, 22 Oct 2025 14:34:36 GMT
• Title: Single-Scale Magnetoelastic Landau Quantization: Thermodynamics, Quantum Oscillations, and Metrology
• Authors: Denise Assafrão, Faizuddin Ahmed, Edilberto O. Silva,
• Abstract summary: We develop a unified, single-scale description of thermodynamics and quantum oscillations in electronic systems.<n>A single tunable gap organizes all equilibrium observables obtained from a compact harmonic-oscillator partition function.<n>In transport and torque, the same scale rigidly shifts the Hall fan and compresses the $1/B$ period of de Haas-van Alphen and Shubnikov-de Haas oscillations.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We develop a unified, single-scale description of thermodynamics and quantum oscillations in electronic systems with a uniform areal density of screw dislocations under a uniform magnetic field. A single tunable gap, $\hbar|\omega_{eff}|$ with $\omega_{eff}=\omega_{c}+\omega_{cl}$, organizes all equilibrium observables obtained from a compact harmonic-oscillator partition function: free energy, internal energy, entropy, heat capacity, magnetization, magnetic susceptibility, and magnetocaloric responses collapse onto universal hyperbolic kernels in $x=\hbar|\omega_{eff}|/(2k_{B}T)$. We identify a compensated-field regime where the transverse gap closes and the heat capacity reaches an equipartition plateau, providing a sharp signature of magnetoelastic interference. In transport and torque, the same scale rigidly shifts the Hall fan and compresses the $1/B$ period of de Haas-van Alphen and Shubnikov-de Haas oscillations when expressed in $1/B_{eff}$, enabling a phase-unwarping protocol that metrologizes the dislocation density from a single field sweep. In mesoscopic samples, boundary corrections to the Landau degeneracy generate finite-size calorimetric oscillations that diagnose the effective magnetic length. Moderate disorder and weak interactions preserve the kernel structure while smoothing amplitudes. We outline an experimental roadmap combining on-chip calorimetry, torque magnetometry, and transport, and discuss device-level opportunities in caloritronics and strain engineering, magnetocaloric microcooling, magnetoelastic heat switching, and dilatometric transduction, where the single scale $\hbar|\omega_{eff}|$ enables rational design and optimization.

Related papers

• Hybrid Atomistic-Parametric Decoherence Model for Molecular Spin Qubits [0.0]
  Solid-state molecular qubits with open-shell ground states have great potential for addressability, scalability, and tunability.<n>We develop a random Hamiltonian approach where the molecular $g$-tensor fluctuates due to classical lattice motion.<n>Our work demonstrates the potential of dynamical methods for modeling the open quantum system dynamics of molecular spin qubits.
  arXiv  Detail & Related papers  (2025-11-11T19:33:32Z)
• Metamagnetic Transition in Low-Dimensional Site-Decorated Quantum Heisenberg Ferrimagnets [0.0]
  We present a theoretical study of quantum Heisenberg ferrimagnets in a magnetic field.<n>We find two finite-temperature second-order transitions; just above $T_c2$ a half-ice, half-fire'' regime appears.<n>These results may shed light on new technological applications of low-dimensional quantum spin systems.
  arXiv  Detail & Related papers  (2025-11-09T16:24:45Z)
• An integrated neural wavefunction solver for spinful Fermi systems [41.99844472131922]
  We present an approach to solving the ground state of Fermi systems that contain spin or other discrete degrees of freedom in addition to continuous coordinates.<n>A transformer achieves both continuous position and discrete spin as inputs universal approximation to spinful generalized orbitals.<n>We validate the method on a range of two-dimensional material problems.
  arXiv  Detail & Related papers  (2025-10-21T13:20:31Z)
• Prethermal Floquet time crystals in chiral multiferroic chains and applications as quantum sensors of AC fields [41.94295877935867]
  We study the emergence of prethermal Floquet Time Crystal (pFTC) in disordered multiferroic chains.<n>We derive the phase diagram of the model, characterizing the magnetization, entanglement, and coherence dynamics of the system.<n>We also explore the application of the pFTC as quantum sensors of AC fields.
  arXiv  Detail & Related papers  (2024-10-23T03:15:57Z)
• Conventional and unconventional Dicke models: Multistabilities and nonequilibrium dynamics [0.0]
  The stability and dynamics of the system in the thermodynamic limit are examined using a semiclassical approach. We perform small-scale full quantum-mechanical calculations, with results consistent with the semiclassical ones.
  arXiv  Detail & Related papers  (2023-07-11T18:00:12Z)
• Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
  A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins. These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field. We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
  arXiv  Detail & Related papers  (2023-05-10T12:59:07Z)
• Spin Current Density Functional Theory of the Quantum Spin-Hall Phase [59.50307752165016]
  We apply the spin current density functional theory to the quantum spin-Hall phase. We show that the explicit account of spin currents in the electron-electron potential of the SCDFT is key to the appearance of a Dirac cone.
  arXiv  Detail & Related papers  (2022-08-29T20:46:26Z)
• Partition of kinetic energy and magnetic moment in dissipative diamagnetism [20.218184785285132]
  We analyze dissipative diamagnetism, arising due to dissipative cyclotron motion in two dimensions, in the light of the quantum counterpart of energy equipartition theorem. The expressions for kinetic energy and magnetic moment are reformulated in the context of superstatistics.
  arXiv  Detail & Related papers  (2022-07-30T08:07:28Z)
• Operating in a deep underground facility improves the locking of gradiometric fluxonium qubits at the sweet spots [40.52930634139674]
  The gradiometric fluxonium shows two orders of magnitude suppression of sensitivity to homogeneous magnetic fields. We observe unexpectedly short fluxon lifetimes of a few hours, which cannot be explained by thermal or quantum phase slips.
  arXiv  Detail & Related papers  (2022-01-24T16:16:17Z)
• Quantum Phase Transition of Many Interacting Spins Coupled to a Bosonic Bath: static and dynamical properties [0.0]
  We show that in the Ohmic regime, a Beretzinski-Thouless-Kosterlitz quantum phase transition occurs. For the observed quantum phase transition we also establish a criterion analogous to that of the metal-insulator transition in solids.
  arXiv  Detail & Related papers  (2021-03-30T10:07:11Z)
• Quantum dynamics in strongly driven random dipolar magnets [0.0]
  We show that destructive interference between two almost degenerate pathways burns spectral holes in the magnetic susceptibility of strongly driven magnetic moments. For larger clusters of magnetic moments, the corresponding level schemes separate into almost isolated many-body $Lambda$-schemes. This enables the observation of Fano resonances, caused by many-body quantum corrections to the common Ising approximation also in the thermodynamic limit.
  arXiv  Detail & Related papers  (2020-02-18T19:09:29Z)
• 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.