Dynamic nuclear polarization induced by hot electrons
Yosuke Komori, Tohru Okamoto
Abstract
A new method for local dynamic nuclear polarization is demonstrated in a GaAs/AlGaAs heterostructure at the Landau level filling factor ν=3. Using a narrow channel sample, where the width varies stepwise along the electron flow, we find that electron cooling (heating) causes the polarization of nuclear spins against (toward) the external magnetic field at liquid helium temperatures. The longitudinal nuclear spin relaxation rate varies exponentially with inverse temperature.
Create a lesson
Related papers
Chiral phonons driven by chiral cavities
V. A. S. V. Bittencourt, N. Shabala, R. M. Geilhufe et al.
Entanglement from particle number fluctuations in a second-order topological insulator
Mahla Moridi Farimani, Kim Pöyhönen
How Landau caterpillars turn into Hofstadter butterflies by tuning the periodic potential strength
Ivo A. Gabrovski, Louk Rademaker
Device characterization of Si/SiGe double quantum dots using exchange oscillations in Earth's magnetic field
Holly G. Stemp, Harry Hanlim Kang, Chih Hwan Yang et al.
Interfacial Spin-to-Charge Conversion in Sputtered MoTe2 Heterostructures Probed by Spin Pumping and Spin-Torque Ferromagnetic Resonance
J. L. Costa, E. Santos, E. L. T. França et al.
Breakdown of Charge-Conjugation Symmetry of Disclinations in 2D Crystals
Ruslan Yamaletdinov, Mikhail I. Katsnelson, Oleg V. Yazyev