281 citations · 1.7k across the 45 of their papers we have counts for
46 papers
Theory of Field-Angle-Resolved Magnetoacoustic Resonance in Spin-Triplet Systems for Application to Nitrogen-Vacancy Centers in Diamond
Mikito Koga, Masashige Matsumoto
Motivated by the recent studies of acoustically driven electron spin resonance applied to diamond nitrogen-vacancy (NV) centers, we investigate the interaction of an electronic spi…
First ESR Detection of Higgs Amplitude Mode and Analysis with Extended Spin-Wave Theory in Dimer System KCuCl
Masashige Matsumoto, Takahiro Sakurai, Yuki Hirao +3
KCuCl is known to show a quantum phase transition from the disordered to antiferromagnetically ordered phases by applying pressure. There is a longitudinal excitation mode (Hig…
Total Moment Sum Rule for Magnets in the Vicinity of Quantum Critical Point
Masashige Matsumoto
It is known that the longitudinal and transverse excitation modes can exist in the vicinity of a quantum critical point in the ordered phase of quantum magnetic systems. The total…
Magnetoacoustic Resonance to Probe Quadrupole-Strain Coupling in a Diamond Nitrogen-Vacancy Center as a Spin-Triplet System
Mikito Koga, Masashige Matsumoto
A theory of magnetoacoustic resonance is proposed to measure quadrupole-strain couplings in a spin-triplet state with the point group symmetry, considering the spin-strain…
Theory of Photon-Assisted Magnetoacoustic Resonance as a New Probe of Quadrupole Dynamics
Mikito Koga, Masashige Matsumoto
Motivated by the recent progress of phonon-mediated control in quantum spin devices, we propose a possibility of hybrid measurement using electron paramagnetic resonance (EPR) and…
Analysis of Magnetoacoustic Quadrupole Resonance and Application to Probe Quadrupole Degrees of Freedom in Quantum Magnets
Masashige Matsumoto, Mikito Koga
Motivated by the recent progress of high-frequency ultrasonic measurements, we propose a theory of magnetoacoustic resonance as a microscopic probe for quadrupole degrees of freedo…