Hysteresis loops and adiabatic landau-zener-stückelberg transitions in the magnetic molecule {V6}

Ioannis Rousochatzakis, Y. Ajiro, H. Mitamura, P. Kögerler, M. Luban

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

We have observed hysteresis loops and abrupt magnetization steps in the magnetic molecule {V6}, where each molecule comprises a pair of identical spin triangles, in the temperature range 1-5 K for external magnetic fields B with sweep rates of several Tesla per millisecond executing a variety of closed cycles. The hysteresis loops are accurately reproduced using a generalization of the Bloch equation based on direct one-phonon transitions between the instantaneous Zeeman-split levels of the ground state (an S = 1/2 doublet) of each spin triangle. The magnetization steps occur for B ≈ 0, and they are explained in terms of adiabatic Landau-Zener-Stückelberg transitions between the lowest magnetic energy levels as modified by an intertriangle anisotropic exchange of order 0.4 K.

Original languageEnglish (US)
Article number147204
JournalPhysical Review Letters
Volume94
Issue number14
DOIs
StatePublished - Apr 15 2005

Fingerprint

triangles
hysteresis
closed cycles
magnetization
molecules
energy levels
ground state
magnetic fields
temperature

Cite this

Hysteresis loops and adiabatic landau-zener-stückelberg transitions in the magnetic molecule {V6}. / Rousochatzakis, Ioannis; Ajiro, Y.; Mitamura, H.; Kögerler, P.; Luban, M.

In: Physical Review Letters, Vol. 94, No. 14, 147204, 15.04.2005.

Research output: Contribution to journalArticle

Rousochatzakis, Ioannis ; Ajiro, Y. ; Mitamura, H. ; Kögerler, P. ; Luban, M. / Hysteresis loops and adiabatic landau-zener-stückelberg transitions in the magnetic molecule {V6}. In: Physical Review Letters. 2005 ; Vol. 94, No. 14.
@article{f4ee1d7bf18748e2b5a2df729593cc41,
title = "Hysteresis loops and adiabatic landau-zener-st{\"u}ckelberg transitions in the magnetic molecule {V6}",
abstract = "We have observed hysteresis loops and abrupt magnetization steps in the magnetic molecule {V6}, where each molecule comprises a pair of identical spin triangles, in the temperature range 1-5 K for external magnetic fields B with sweep rates of several Tesla per millisecond executing a variety of closed cycles. The hysteresis loops are accurately reproduced using a generalization of the Bloch equation based on direct one-phonon transitions between the instantaneous Zeeman-split levels of the ground state (an S = 1/2 doublet) of each spin triangle. The magnetization steps occur for B ≈ 0, and they are explained in terms of adiabatic Landau-Zener-St{\"u}ckelberg transitions between the lowest magnetic energy levels as modified by an intertriangle anisotropic exchange of order 0.4 K.",
author = "Ioannis Rousochatzakis and Y. Ajiro and H. Mitamura and P. K{\"o}gerler and M. Luban",
year = "2005",
month = "4",
day = "15",
doi = "10.1103/PhysRevLett.94.147204",
language = "English (US)",
volume = "94",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "14",

}

TY - JOUR

T1 - Hysteresis loops and adiabatic landau-zener-stückelberg transitions in the magnetic molecule {V6}

AU - Rousochatzakis, Ioannis

AU - Ajiro, Y.

AU - Mitamura, H.

AU - Kögerler, P.

AU - Luban, M.

PY - 2005/4/15

Y1 - 2005/4/15

N2 - We have observed hysteresis loops and abrupt magnetization steps in the magnetic molecule {V6}, where each molecule comprises a pair of identical spin triangles, in the temperature range 1-5 K for external magnetic fields B with sweep rates of several Tesla per millisecond executing a variety of closed cycles. The hysteresis loops are accurately reproduced using a generalization of the Bloch equation based on direct one-phonon transitions between the instantaneous Zeeman-split levels of the ground state (an S = 1/2 doublet) of each spin triangle. The magnetization steps occur for B ≈ 0, and they are explained in terms of adiabatic Landau-Zener-Stückelberg transitions between the lowest magnetic energy levels as modified by an intertriangle anisotropic exchange of order 0.4 K.

AB - We have observed hysteresis loops and abrupt magnetization steps in the magnetic molecule {V6}, where each molecule comprises a pair of identical spin triangles, in the temperature range 1-5 K for external magnetic fields B with sweep rates of several Tesla per millisecond executing a variety of closed cycles. The hysteresis loops are accurately reproduced using a generalization of the Bloch equation based on direct one-phonon transitions between the instantaneous Zeeman-split levels of the ground state (an S = 1/2 doublet) of each spin triangle. The magnetization steps occur for B ≈ 0, and they are explained in terms of adiabatic Landau-Zener-Stückelberg transitions between the lowest magnetic energy levels as modified by an intertriangle anisotropic exchange of order 0.4 K.

UR - http://www.scopus.com/inward/record.url?scp=18244369758&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18244369758&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.147204

DO - 10.1103/PhysRevLett.94.147204

M3 - Article

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 14

M1 - 147204

ER -