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Many-spin effects and tunneling splittings in Mn12 magnetic molecules

Autor: V. V. Dobrovitski, Mikhail I. Katsnelson, de Hans Raedt, B. N. Harmon, A.H. Hams, M. Al-Saqer

Publikováno v: Journal of Magnetism and Magnetic Materials, 246(3)
Journal of Magnetism and Magnetic Materials, 246(3):PII S0304-8853(02)00111-7, 392-398

We calculate the tunneling splittings in a Mn$_{12}$ magnetic molecule taking into account its internal many-spin structure. We discuss the precision and reliability of these calculations and show that restricting the basis (limiting the number of ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07445c89cfcb4f8854422cd4f08177c5
https://doi.org/10.1016/s0304-8853(02)00111-7

Many-spin calculation of tunneling splittings in Mn-12 magnetic molecules

Autor: A.H. Hams, M. Al-Saqer, Viatcheslav Dobrovitski, B. N. Harmon, de Hans Raedt, Mikhail I. Katsnelson

Publikováno v: Journal of Applied Physics, 91(10), 7152-7154. AMER INST PHYSICS
Journal of Magnetism and Magnetic Materials, 246(3)

We calculate the tunneling splittings in a Mn12 magnetic molecule taking into account its internal many-spin structure. We discuss the precision and reliability of these calculations and show that restricting the basis (limiting the number of excitat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89f8c1226e974221192ceadcb488383b
https://hdl.handle.net/11370/18b90669-775b-4514-b045-a307663b66e1

Simulation of Quantum Computers

Autor: Kristel Michielsen, Keiji Saito, H. De Raedt, Seiji Miyashita, A.H. Hams

Publikováno v: Springer Proceedings in Physics ISBN: 9783540411901
Host Publication, 76-80
STARTPAGE=76;ENDPAGE=80;TITLE=Host Publication

We describe a simulation approach to study the functioning of Quantum Computer hardware. The latter is modeled by a collection of interacting spin-1/2 objects. The time evolution of this spin system maps one-to-one to a quantum program carried out by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9422830f9d885b061ab79104ca6f931
https://doi.org/10.1007/978-3-642-56577-9_8

Fast Algorithm for Finding the Eigenvalue Distribution of Very Large Matrices

Autor: A.H. Hams, de Hans Raedt

Publikováno v: Physical Review E, 62(3), 4365-4377. AMER PHYSICAL SOC

A theoretical analysis is given of the equation of motion method, due to Alben et al., to compute the eigenvalue distribution (density of states) of very large matrices. The salient feature of this method is that for matrices of the kind encountered

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54c25f9e82caac84ca10dbc5ad33216b