Proper Surface Termination for Luminescent Near-Surface NV Centers in Diamond

被引：138

作者：

Kaviani, Moloud ^{[1
]}

Deak, Peter ^{[1
]}

Aradi, Balint ^{[1
]}

Frauenheim, Thomas ^{[1
]}

Chou, Jyh-Pin ^{[2
]}

Gali, Adam ^{[2
,3
]}

机构：

[1] Univ Bremen, Bremen Ctr Computat Mat Sci, D-28359 Bremen, Germany

[2] Hungarian Acad Sci, Wigner Res Ctr Phys, Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[3] Budapest Univ Technol & Econ, Dept Atom Phys, H-1111 Budapest, Hungary

来源：

NANO LETTERS | 2014年 / 14卷 / 08期

关键词：

NUCLEAR-MAGNETIC-RESONANCE; NITROGEN-VACANCY CENTERS; AMBIENT CONDITIONS; SPINS; THERMOMETRY; STATE;

D O I：

10.1021/nl501927y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By accurate quantum mechanical simulations, we show that typical diamond surfaces possess image states with sub-bandgap energies, and compromise the photostability of NV centers placed within a few nm of the surface. This occurs due to the mixture of the NV-related gap states and the surface image states, which is a novel and distinct process from the well-established band bending effect. We also find that certain types of coverages on the diamond surface may lead to blinking or bleaching due to the presence of acceptor surface states. We identify a combination of surface terminators that is perfect for NV-center based nanoscale sensing.

引用

页码：4772 / 4777

页数：6

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