Related Experiment Video
Updated: Dec 18, 2025

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
Electrical Switching of the Nonreciprocal Directional Microwave Response in a Triplon Bose-Einstein Condensate
Shojiro Kimura1, Masashige Matsumoto2, Hidekazu Tanaka3
1Institute for Materials Research, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan.
Abstract:
We present a microwave electron spin resonance study of the quantum spin dimer system TlCuCl_{3}, which shows the magnetic-field-induced ordering with both antiferromagnetic spin order and ferroelectricity by the Bose-Einstein condensation (BEC) of triplon quasiparticles. Our main achievement is an electrical switching of the nonreciprocal directional microwave response in the triplon BEC phase. High-speed directional control of microwave absorption by applying an electric field has been accomplished in this Letter. The strength of the observed nonreciprocal microwave response well agrees with the calculation based on Kubo theory with the parameters, evaluated from the static electric polarization in this material.
Related Concept Videos
Standing Waves in a Cavity
Atomic Nuclei: Nuclear Relaxation Processes
Induced Electric Dipoles
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
Plane Electromagnetic Waves I
The EM field is assumed to be a...
Electromagnetic Waves in Matter
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium, μ.
Furthermore,...

