Related Experiment Video
Updated: Aug 11, 2025
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
9.7K
Transverse magnetoconductance in two-terminal chiral spin-selective devices
Md Anik Hossain1, Sara Illescas-Lopez2, Rahul Nair1,3
1Department of Electrical and Computer Engineering, University of Alberta, Alberta, T6G 1H9, Canada. spramani@ualberta.ca.
Nanoscale Horizons
|February 6, 2023
Summary
Chirality induced spin selectivity (CISS) shows transverse effects and is not limited to linear response. This study clarifies CISS measurements and reveals a physical origin beyond electric magnetochiral effects.
Area of Science:
- Condensed matter physics
- Spintronics
- Chirality
Background:
- Chirality induced spin selectivity (CISS) is a key spintronic phenomenon.
- Current research primarily focuses on longitudinal spin polarization and magnetoconductance (MC).
- Transverse spin components and their relation to CISS remain poorly understood, with experimental validation debated.
Purpose of the Study:
- Investigate the bias dependence of CISS.
- Explore transverse magnetoconductance in chiral systems.
- Clarify the role of electric magnetochiral effects in CISS.
Main Methods:
- Utilized planar carbon nanotube networks functionalized with chiral molecules.
- Performed two-terminal transport experiments.
- Analyzed bias dependence of magnetoconductance.
Main Results:
- Confirmed the existence of transverse magnetoconductance with CISS signatures.
- Demonstrated that transverse CISS MC vanishes in the linear response regime, supporting Onsager's relation.
- Observed CISS signal independent of electric magnetochiral effects.
Conclusions:
- Transverse CISS effects are experimentally verifiable.
- Onsager's relation is valid for two-terminal CISS systems.
- CISS has a physical origin independent of electric magnetochiral effects, opening new research avenues.
More Related Videos
Related Concept Videos
01:23Magnetic Field due to Moving Charges
9.0K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
9.0K
01:18Magnetic Field Due to Two Straight Wires
2.7K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.7K
01:13Magnetic Force Between Two Parallel Currents
3.6K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and the vector product of the length vector along the current element and the field due to the first conductor. According to the...
3.6K
01:20Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
1.1K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.1K
01:28Magnetic Field Due To A Thin Straight Wire
5.0K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
5.0K
01:28Magnetostatic Boundary Conditions
1.1K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.1K