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Main positions:Director, High Performance Computing Platform, PKU
Degree:Doctoral degree
Status:Employed
School/Department:Institute of Theoretical Physics

Lei Yian

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Education Level: Postgraduate (Doctoral)

Administrative Position: Associate Professor

Alma Mater: Peking University

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Eternal Electric Current in Atoms: Unification of Magnetism and Superconductivity
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"Within every atom flows an eternal electric current—the tiniest yet most exquisite melody of nature."

I. Introduction: The Superconducting Universe Hiding in Plain Sight

We are accustomed to viewing "superconductivity" as a rare phenomenon requiring liquid helium cooling, yet we overlook an astonishing fact: at room temperature, true zero-resistance current motion occurs inside every atom. This is not a metaphor, but a physical reality long obscured by the traditional "point-particle language."

When an electron occupies a stable atomic orbital (e.g., p, d, f states), it is not a stationary probability cloud but rotates around the atomic nucleus at a precise frequency. This motion forms a constant circular current—generating no heat, dissipating no energy, and producing an unattenuated magnetic field. This is precisely the essential definition of a superconducting current.

The atom is nature’s smallest superconducting loop.

II. Misunderstood Perpetual Motion: The Essence of Atomic Magnetism

Traditional theories explain ferromagnetism using "spin magnetic moment" and "exchange interaction," but evade a fundamental question: why can magnetism persist indefinitely?

The answer lies in two sources: besides electron spin (thus electrons can also be understood as superconducting current loops), part of magnetism originates from real orbital currents. In the 3d orbitals of elements like iron, cobalt, and nickel, electrons undergo continuous circular motion, forming microscopic superconducting loops. This current persists eternally because it is protected by natural frequency locking.

Natural frequency locking means:

  • The electron’s motion frequency is consistent with the orbital geometric structure.

  • The wavefunction’s phase closes completely after one orbit (2πr = nλ).

  • Any deviation is automatically pulled back to the resonance point by the potential field.

This is a self-tuning, self-sustaining dissipationless state—the atomic-scale prototype of superconductivity.

III. Natural Frequency Locking: The True Cause of Stable Orbitals

3.1 Self-Consistent Conditions for Orbital Resonance

The electron’s de Broglie wave must form an integer multiple relationship with the orbital circumference:

2πr = nλ = nh/p

This is not an artificially imposed quantization rule, but an inevitable result of resonant frequency locking. Only under this condition can the electron wave form a stable standing wave loop, avoiding destructive interference.

If the frequency deviates slightly, the system automatically restores resonance through a kinetic-potential energy feedback mechanism—an intrinsic negative feedback stability.

3.2 The Natural Origin of Zero Resistance

In the frequency-locked state:

  • The current density J(r) does not change with time.

  • There is no dipole radiation or energy leakage.

  • Kinetic and potential energy are exchanged periodically, keeping the system in a steady state.

These are the core characteristics of superconductivity: dissipationlessness and perpetual flow. The only difference is that atomic superconductivity involves single-electron resonance, while macroscopic superconductivity involves many-body collective resonance.

3.3 A Unified Picture of Frequency Locking and Superconductivity

Feature Atomic Orbitals Macroscopic Superconductivity
Basic Unit Single electron Cooper pairs
Mechanism Natural frequency-locked resonance Phase-locked resonance
Resistance Zero Zero
Stability Source Energy self-consistency + topological constraints Coherence + energy gap protection
Disturbance Response Automatic frequency recovery Meissner effect resists magnetic flux

Stability arises from frequency locking, and frequency locking generates superconductivity—this is a unifying principle spanning micro and macro scales.

IV. Microscopic Lenz’s Law and Topological Protection

Lenz’s law states that a system resists changes in magnetic flux. At the atomic scale, this behavior is the intrinsic mechanism of frequency-locked resonance:

  1. An external field disturbs the orbital magnetic flux → resonant phase mismatch occurs.

  2. The system automatically adjusts the current → restores the integer multiple of 2π phase.

  3. Result: Flux quantization is maintained, and the orbital returns to stability.

This behavior constitutes topological protection: the quantization of orbital phase (2nπ) is a topological invariant that cannot be destroyed by continuous disturbances. Thus, atomic magnetic moments possess inherent memory and anti-interference capabilities.

V. From Atoms to Magnets: Hierarchical Extension of Resonant Phase Locking

In ferromagnets, microscopic superconducting loops achieve macroscopic order through orbital-orbital phase locking:

  • Single-atom level: Electrons in d/f orbitals are in a naturally frequency-locked state, forming stable current loops.

  • Interatomic level: Adjacent atoms synchronize their resonance frequencies via exchange interactions.

  • Macroscopic level: 10²³ microcurrent loops undergo collective phase locking, forming a permanent magnetic field.

This explains the core mysteries of permanent magnets:

  • Why can magnetism persist "permanently"?

  • Why does demagnetization require a strong reverse field?

  • Why do magnetic domains have directional stability?

A permanent magnet is essentially a macroscopic coherent state of microscopic superconducting loops.

VI. Insights from Rare Earth Magnetism: Shielding Effect of Orbital Frequency Locking

The 3d orbitals of transition metals (Fe, Co, Ni) participate in chemical bonding and are strongly disturbed by the crystal field, leading to partial disruption of natural frequency locking. The orbital magnetic moment contributes minimally (<10%), resulting in "spin-dominated" magnetism.

In contrast, the 4f electrons of rare earth elements (Gd, Tb, Dy) are shielded by the 5s/5p shells and barely affected by the crystal field. Their orbital frequency locking is fully preserved, so the 4f orbital currents maintain high coherence, with the orbital magnetic moment contributing 30–50%.

Rare earth magnetism is direct evidence of the survival of natural frequency locking in multi-electron systems.

VII. From Atomic Superconductivity to Macroscopic Superconductivity: A New Path to Room-Temperature Superconductivity

Since atoms can sustain superconducting currents at room temperature, the key to achieving macroscopic room-temperature superconductivity lies in constructing material systems that maintain collective frequency locking under thermal disturbances.

Feasible paths include:

  • Artificial atom design: Replicating orbital resonance using quantum dots and moiré superlattices.

  • Topological material engineering: Simulating the topological protection of atomic orbitals using surface states.

  • Phonon/photon resonance enhancement: Strengthening electron frequency locking via lattice or light field coupling.

  • Dimensional regulation: Suppressing phase fluctuations and extending coherence length in low-dimensional systems.

Room-temperature superconductivity does not necessarily require new pairing mechanisms; it can also be achieved through the macroscopic extension of atomic-scale frequency locking.

VIII. Experimental Evidence and Testable Predictions

Phenomenon Explanation via Natural Frequency Locking
Ultra-high precision of atomic clocks Extremely high Q-value (>10¹⁰) of orbital frequency locking
Quantum Hall effect Flux quantization resonance of Landau orbitals
Mössbauer effect Temporal synchronization between nuclear transitions and lattice resonance
Forbidden transitions Extremely low transition probability due to resonance mismatch
Stability of permanent magnets Collective phase locking of microscopic frequency-locked current loops
Meissner effect in superconductors Flux repulsion by many-body phase resonance

Testable predictions:

  • Ultra-high-resolution spectroscopy should observe orbital resonance frequencies.

  • Tunable artificial orbital frequency locking can be achieved in quantum dots.

  • Single-atom magnetic measurements should reveal flux quantization steps.

  • Long-range orbital coherence can be realized in specific superlattices.

IX. Reinterpretation of Basic Physics

The natural frequency locking theory provides a clear physical explanation for quantum phenomena:

  • Wave-particle duality: Particle nature = localized energy packet; wave nature = phase coherence required for frequency locking.

  • Uncertainty principle: Not "measurement disturbance," but the Fourier relationship between resonance bandwidth and lifetime.

  • Quantization: Not a mathematical postulate, but a topological requirement of frequency locking.

  • Quantum entanglement: May originate from resonant coupling of remote systems, not a mysterious "action at a distance."

X. Conclusion: The Return of Physics

When we recognize that natural frequency locking is the common root of atomic stability, magnetism, and superconductivity, the mysterious veil of the quantum world is lifted:

  • Uncertainty → Resonance tolerance.

  • Quantization → Frequency locking conditions.

  • Spin → Relativistic manifestation of circular rotation.

  • Orbital stability → Phase self-consistency.

  • Magnetism and superconductivity → The same physical phenomenon at different scales.

Physics does not need metaphysical concepts like "collapse" or "superposition" to explain stability. Nature itself has already achieved perfect frequency locking and superconductivity in every atom.

When we finally understand this,we may discover—The atom is not only the basic unit of matter,but also the most precise natural resonator in the universe.

And in that silent rotation,flows the most perfect music of nature:Eternal electric current.