54 citations · 175 across the 19 of their papers we have counts for
19 papers
Pseudo-Hermitian Magnon Dynamics
Jamal Berakdar, Xi-guang Wang
A defining quantity of a physical system is its energy which is represented by the Hamiltonian. In closed quantum mechanical or/and coherent wave-based systems the Hamiltonian is i…
PT-Symmetric Magnon Lasing and Anti-Lasing
Xi-guang Wang, Tian-xiang Lu, Guang-hua Guo +2
A mechanism for electrically tunable PT-symmetric magnonic lasing and anti-lasing is proposed along with a device consisting of a current-biased region in a magnetically ordered pl…
Electrically Tunable Magnonic Bound States in the Continuum
Xi-guang Wang, Guang-hua Guo, Jamal Berakdar +1
Low energy excitations of a magnetically ordered system are spin waves with magnon being their excitation quanta. Magnons are demonstrated to be useful for data processing and comm…
Active nonreciprocal cloaking for pseudo-Hermitian magnons
Dominik Schulz, Jamal Berakdar, Xi-guang Wang
Cloaking has important applications but entails sophisticated control of signal propagation and scattering characteristics. Here, we show that invisibility for magnon signals is ac…
Controlling effective field contributions to laser-induced magnetization precession by heterostructure design
Jasmin Jarecki, Maximilian Mattern, Fried-Conrad Weber +6
Nanoscale heterostructure design can control laser-induced heat dissipation and strain propagation as well as their efficiency for driving magnetization precession. We use insulati…
PT-symmetry enabled spintronic thermal diode and logic gates
Xi-guang Wang, Guang-hua Guo, Jamal Berakdar
Devices for performing computation and logic operations with low-energy consumption are of key importance for environmentally friendly data-processing and information technology. H…
Floquet-engineering the exceptional points in parity-time-symmetric magnonics
Xi-guang Wang, Lu-lu Zeng, Guang-hua Guo +1
Magnons serve as a testing ground for fundamental aspects of Hermitian and non-Hermitian wave mechanics and are of high relevance for information technology. This study presents se…
Steering skyrmions with microwave and THz electric pulses
Xi-guang Wang, Guang-hua Guo, V. K. Dugaev +5
Tools for controlling electrically the motion of magnetic skyrmions are important elements towards their use in spintronic devices. Here, we propose and demonstrate the transport o…
Magnon dynamics in parity-time-symmetric dipolarly coupled waveguides and magnonic crystals
Xi-guang Wang, Dominik Schulz, Guang-hua Guo +1
We consider the magnonic properties of two dipolarly coupled magnetic stripes, both deposited on a normal conductive substrate with strong spin-orbit coupling. A charge current in…
Rectification of the spin Seebeck current in noncollinear antiferromagnets
L. Chotorlishvili, Xi-guang Wang, A. Dyrdal +4
In the absence of an external magnetic field and a spin-polarized charge current, an antiferromagnetic system supports two degenerate magnon modes. An applied thermal bias activate…
Standing spin wave excitation in Bi:YIG films via temperature induced anisotropy changes and magnetoacoustic coupling
Steffen Peer Zeuschner, Xi-Guang Wang, Marwan Deb +6
Based on micromagnetic simulations and experimental observations of the magnetization and lattice dynamics following the direct optical excitation of the magnetic insulator Bi:YIG…
Electron-magnon spin conversion and magnonic spin pumping in antiferromagnet/heavy metal heterostructure
Xi-guang Wang, Yao-Zhuang Nie, L. Chotorlishvili +3
We study the exchange between electron and magnon spins at the interface of an antiferromagnet and a heavy metal at finite temperatures. The underlying physical mechanism is based…
Steering magnonic dynamics and permeability at exceptional points in a parity-time symmetric waveguide
Xi-guang Wang, Guang-hua Guo, Jamal Berakdar
Tuning the low-energy magnetic dynamics is a key element in designing novel magnetic metamaterials, spintronic devices and magnonic logic circuits. This study uncovers a new, highl…
High-fidelity magnonic gates for surface spin waves
Xi-guang Wang, L. Chotorlishvili, Guang-hua Guo +1
We study the propagation of surface spin waves in two wave guides coupled through the dipole-dipole interaction. Essential for the observations made here is the magneto-electric co…
Thermally assisted Skyrmion drag in a nonuniform electric field
Xi-guang Wang, L. Chotorlishvili, Guang-hua Guo +2
Magnetic skyrmions are topologically protected excitations of the magnetization vector field with promising applications in spintronics and spin-caloritronics, particularly due to…
Left-handed polarized spin waves in ferromagnets induced by spin-transfer torque
Zhen-wei Zhou, Xi-guang Wang, Yao-zhuang Nie +3
Polarization is a fundamental property of waves that refers to the orientation of the oscillations. It has been widely used to encode information in photonics and phononics. Howeve…
Conversion of electronic to magnonic spin current at heavy-metal magnetic-insulator interface
Xi-guang Wang, Zhi-xiong Li, Zhen-wei Zhou +6
Electronic spin current is convertible to magnonic spin current via the creation or annihilation of thermal magnons at the interface of a magnetic insulator and a metal with a stro…
Magnonic band structure of domain wall magnonic crystals
D. Wang, Yan Zhou, Zhi-xiong Li +3
Magnonic crystals are prototype magnetic metamaterials designed for the control of spin wave propagation. Conventional magnonic crystals are composed of single domain elements. If…
Magnonic momentum transfer force on domain walls confined in space
D. Wang, Xi-guang Wang, Guang-hua Guo
Momentum transfer from incoming magnons to a Bloch domain wall is calculated using one dimensional continuum micromagnetic analysis. Due to the confinement of the wall in space, th…