Boundary between the thermal and statistical polarization regimes in a nuclear spin ensemble

Journal Article · Mon Jul 28 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4892361· OSTI ID:22311220

Herzog, B. E.; Cadeddu, D.; Xue, F.; Peddibhotla, P.

As the number of spins in an ensemble is reduced, the statistical fluctuations in its polarization eventually exceed the mean thermal polarization. This transition has now been surpassed in a number of recent nuclear magnetic resonance experiments, which achieve nanometer-scale detection volumes. Here, we measure nanometer-scale ensembles of nuclear spins in a KPF{sub 6} sample using magnetic resonance force microscopy. In particular, we investigate the transition between regimes dominated by thermal and statistical nuclear polarization. The ratio between the two types of polarization provides a measure of the number of spins in the detected ensemble.

• OSTI ID: 22311220
• Journal Information: Applied Physics Letters, Vol. 105, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DETECTION
FLUCTUATIONS
FLUORINE COMPOUNDS
MICROSCOPY
NUCLEAR MAGNETIC RESONANCE
PHOSPHORUS COMPOUNDS
POLARIZATION
POTASSIUM COMPOUNDS
SPIN