TY  - JOUR
A1  - Horovitz, Baruch
A1  - Henkel, Carsten
T1  - Spin entanglement via scanning tunneling microscope current
T2  - Physical review : B, Condensed matter and materials physics
N2  - We consider a system of two spins under a scanning tunneling microscope bias and derive its master equation. We find that the tunneling elements to the electronic contacts (tip and substrate) generate an exchange interaction between the spins as well as a Dzyaloshinskii-Moriya interaction in the presence of spin-orbit coupling. The tunnel current spectrum then shows additional lines compared to conventional spin-resonance experiments. When the spins have degenerate Larmor frequencies and equal tunneling amplitudes (without spin orbit), there is a dark state with a vanishing decay rate. The coupling to the electronic environment generates significant spin-spin entanglement via the dark state, even if the initial state is nonentangled.
Y1  - 2021
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/60335
SN  - 2469-9950
SN  - 2469-9969
VL  - 104
IS  - 8
PB  - American Physical Society
CY  - Ridge, NY
ER  -