Nanometer-scale exchange interactions between spin centers in diamond
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2016-06-15 |
| Journal | Physical review. B./Physical review. B |
| Authors | V. R. Kortan, CĂŒneyt Ćahin, Michael E. FlattĂ© |
| Institutions | University of Iowa |
| Citations | 8 |
Abstract
Section titled âAbstractâExchange interactions between isolated pairs of spin centers in diamond have\nbeen calculated, based on an accurate atomistic electronic structure for\ndiamond and any impurity atoms, for spin-center separations up to 2nm. The\nexchange interactions exceed dipolar interactions for spin center separations\nless than 3nm. NV$^-$ spin centers, which are extended defects, interact very\ndifferently depending on the relative orientations of the symmetry axis of the\nspin center and the radius vector connecting the pair. Exchange interactions\nbetween transition-metal dopants behave similarly to those of NV$^-$ centers.\nThe Mn\---Mn exchange interaction decays with a much longer length scale than\nthe Cr\---Cr and Ni\---Ni exchange interactions, exceeding dipolar interactions\nfor Mn\---Mn separations less than 5~nm. Calculations of these highly\nanisotropic and spin-center-dependent interactions provide the potential for\ndesign of the spin-spin interactions for novel nanomagnetic structures.\n