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Distributions of tunnel splittings i...

Mertes, Kevin Mathias.

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Distributions of tunnel splittings in quantum tunneling of magnetization in the single-molecule magnet, manganese12-acetate.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Distributions of tunnel splittings in quantum tunneling of magnetization in the single-molecule magnet, manganese12-acetate./
Author:	Mertes, Kevin Mathias.
Description:	93 p.
Notes:	Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4226.
Contained By:	Dissertation Abstracts International63-09B.
Subject:	Physics, Condensed Matter. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3063862
ISBN:	0493828435

Distributions of tunnel splittings in quantum tunneling of magnetization in the single-molecule magnet, manganese12-acetate.
Mertes, Kevin Mathias.

Distributions of tunnel splittings in quantum tunneling of magnetization in the single-molecule magnet, manganese12-acetate. - 93 p.

Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4226.

Thesis (Ph.D.)--City University of New York, 2002.

I present the results of an experimental investigation of quantum tunneling of magnetization in the single molecule magnet, Mn12-acetate, for magnetic fields applied along the easy c-axis of the crystal.

ISBN: 0493828435Subjects--Topical Terms:

1018743
Physics, Condensed Matter.

Distributions of tunnel splittings in quantum tunneling of magnetization in the single-molecule magnet, manganese12-acetate.
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020 $a 0493828435
035 $a (UnM)AAI3063862
035 $a AAI3063862
040 $a UnM $c UnM
100 1 $a Mertes, Kevin Mathias. $3 1908422
245 1 0 $a Distributions of tunnel splittings in quantum tunneling of magnetization in the single-molecule magnet, manganese12-acetate.
300 $a 93 p.
500 $a Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4226.
500 $a Adviser: Myriam P. Sarachik.
502 $a Thesis (Ph.D.)--City University of New York, 2002.
520 $a I present the results of an experimental investigation of quantum tunneling of magnetization in the single molecule magnet, Mn12-acetate, for magnetic fields applied along the easy c-axis of the crystal.
520 $a Magnetization measurements for temperatures below 2 Kelvin reveal new properties of the nature of tunneling in Mn12-acetate: an abrupt cross-over from thermally-assisted tunneling to pure ground state tunneling, strong suppression of ground state tunneling for temperatures corresponding to the thermally activated regime and the unexpected dependence of the tunnel splitting determined from the Landau-Zener-Stueckelberg formalism on the magnetic field sweep rate. It is shown that the measured data is inconsistent with a system of identical molecules. The data is shown to be consistent with the presence of a broad log-normal distribution of second order transverse anisotropy which drives the tunneling process. A general method of determining the distribution is developed.
590 $a School code: 0046.
650 4 $a Physics, Condensed Matter. $3 1018743
650 4 $a Physics, Electricity and Magnetism. $3 1019535
650 4 $a Physics, Molecular. $3 1018648
690 $a 0611
690 $a 0607
690 $a 0609
710 2 0 $a City University of New York. $3 1018111
773 0 $t Dissertation Abstracts International $g 63-09B.
790 1 0 $a Sarachik, Myriam P., $e advisor
790 $a 0046
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3063862