Results 61 to 70 of about 473,738 (197)

Enhanced lifetimes of spin chains coupled to chiral edge states

New Journal of Physics, 2019
We consider spin relaxation of finite-size spin chains exchanged coupled with a one-dimensional (1D) electron gas at the edge of a quantum spin Hall (QSH) insulator. Spin lifetimes can be enhanced due to two independent mechanisms. First, the suppression
F Delgado, J Fernández-Rossier
doaj   +1 more source

Dynamics of spin-flip photon-assisted tunneling

, 2014
We present time-resolved measurements of spin-flip photon-assisted tunneling and spin-flip relaxation in a doubly occupied double quantum dot. The photon-assisted excitation rate as a function of magnetic field indicates that spin-orbit coupling is the ...
Schreiber, L.R., Schreiber, L.R. (author), Wegscheider, W., Schreiber, L. R., Schreiber, Lars R., Vandersypen, L.M.K. (author), Braakman, F.R. (author), Wegscheider, W. (author), Danon, J., Braakman, F. R., Vandersypen, L.M.K., Danon, J. (author), Vandersypen, L. M. K., Braakman, F.R.   +13 more
core   +1 more source

Mixed-Reference Spin-Flip Time-Dependent Density Functional Theory for Accurate X-ray Absorption Spectroscopy

, 2022
It is demonstrated that the challenging core hole-particle (CHP) orbital relaxation for core electron spectra can be readily achieved by the mixed-reference spin-flip (MRSF)-TDDFT.
Daeheum, Cho, Marc, Alías-Rodríguez, Seunghoon, Lee, Woojin, Park, Cheol Ho, Choi, Miquel, Huix-Rotllant   +5 more
core   +1 more source

A GPU-Based Ising Machine With a Multi-Spin-Flip Capability for Constrained Combinatorial Optimization

IEEE Access
Ising machines are domain-specific computers that solve combinatorial optimization problems (COPs). They utilize an Ising model to represent a COP and search for the optimal spin configuration of the Ising model to solve the COP.
Satoru Jimbo, Tatsuhiko Shirai, Nozomu Togawa, Masato Motomura, Kazushi Kawamura   +4 more
doaj   +1 more source

Spin flipping with an rf dipole and a full Siberian snake

Physical Review Special Topics. Accelerators and Beams, 2000
We recently used an rf dipole magnet to study the spin flipping of a 120 MeV horizontally polarized proton beam stored in the presence of a nearly full Siberian snake in the Indiana University Cyclotron Facility Cooler Ring.
B. B. Blinov, Ya. S. Derbenev, T. Kageya, D. Yu. Kantsyrev, A. D. Krisch, V. S. Morozov, D. W. Sivers, V. K. Wong, V. A. Anferov, P. Schwandt, B. von Przewoski   +10 more
doaj   +1 more source

Phase flip code with semiconductor spin qubits

npj Quantum Information, 2022
The fault-tolerant operation of logical qubits is an important requirement for realizing a universal quantum computer. Spin qubits based on quantum dots have great potential to be scaled to large numbers because of their compatibility with standard ...
F. van Riggelen, W. I. L. Lawrie, M. Russ, N. W. Hendrickx, A. Sammak, M. Rispler, B. M. Terhal, G. Scappucci, M. Veldhorst   +8 more
doaj   +1 more source

Baby skyrmions in Chern ferromagnets and topological mechanism for spin-polaron formation in twisted bilayer graphene

Nature Communications, 2022
In conventional materials, charge carriers are electron-like quasiparticles, but topological bands allow for more exotic possibilities. Here, the authors predict that in the Chern-ferromagnet phase of twisted bilayer graphene charge is carried by spin ...
Eslam Khalaf, Ashvin Vishwanath
doaj   +1 more source

Spin wave and spin flip in hexagonal LuMnO3 single crystal

, 2017
Manipulation and control of spin wave and spin flip are crucial for future developments of magnonic and spintronic devices. We present that the spin wave in hexagonal LuMnO3 single crystal can be selectively excited with laser polarization perpendicular ...
양인상
core   +1 more source

Bias dependent conductance in CoFeB-MgO-CoFeB magnetic tunnel junctions as an indicator for electrode magnetic condition at barrier interfaces

AIP Advances, 2019
Barrier interface condition is critical for spin-polarized tunneling and spin-transfer torque switching in CoFeB∣MgO∣CoFeB-based magnetic tunnel junctions.
J. Z. Sun, P. L. Trouilloud, G. P. Lauer, P. Hashemi   +3 more
doaj   +1 more source

Understanding of complex spin up-conversion processes in charge-transfer-type organic molecules

Nature Communications
Despite significant progress made over the past decade in thermally activated delayed fluorescence (TADF) molecules as a material paradigm for enhancing the performance of organic light-emitting diodes, the underlying spin-flip mechanism in these charge ...
Hyung Suk Kim, Sang Hoon Lee, Seunghyup Yoo, Chihaya Adachi   +3 more
doaj   +1 more source