Spin order in the classical spin kagome antiferromagnet MgxMn4−x(OH)6Cl2

2020 ◽  
Vol 101 (13) ◽  
Author(s):  
Md. Mahbubur Rahman Bhuiyan ◽  
Xu-Guang Zheng ◽  
Masato Hagihala ◽  
Shuki Torii ◽  
Takashi Kamiyama ◽  
...  
Keyword(s):  
Classical Spin ◽  
Spin Order

scholarly journals Classical spin order near the antiferromagnetic Kitaev point in the spin- 12 Kitaev-Gamma chain

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Wang Yang ◽  
Alberto Nocera ◽  
Erik S. Sørensen ◽  
Hae-Young Kee ◽  
Ian Affleck
Keyword(s):  
Gamma Chain ◽  
Classical Spin ◽  
Spin Order

scholarly journals Evidence of exactness of the mean-field theory in the nonextensive regime of long-range classical spin models

2000 ◽  
Vol 61 (17) ◽  
pp. 11521-11528 ◽  
Author(s):  
Sergio A. Cannas ◽  
A. C. N. de Magalhães ◽  
Francisco A. Tamarit
Keyword(s):  
Field Theory ◽  
Long Range ◽  
Mean Field Theory ◽  
Mean Field ◽  
Spin Models ◽  
Classical Spin ◽  
The Mean ◽  
Classical Spin Models

scholarly journals Front Cover: Long‐Term Generation of Longitudinal Spin Order Controlled by Ammonia Ligation Enables Rapid SABRE Hyperpolarized 2D NMR (12/2021)

ChemPhysChem ◽  
2021 ◽  
Vol 22 (12) ◽  
pp. 1148-1148
Author(s):  
Ewoud Vaneeckhaute ◽  
Sophie De Ridder ◽  
Jean‐Max Tyburn ◽  
James G. Kempf ◽  
Francis Taulelle ◽  
...  
Keyword(s):  
2D Nmr ◽  
Front Cover ◽  
Spin Order ◽  
Longitudinal Spin

scholarly journals Femtosecond control of phonon dynamics near a magnetic order critical point

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
O. Yu. Gorobtsov ◽  
L. Ponet ◽  
S. K. K. Patel ◽  
N. Hua ◽  
A. G. Shabalin ◽  
...  
Keyword(s):  
Critical Point ◽  
Landau Theory ◽  
Density Wave ◽  
Spin Density Wave ◽  
Vibrational States ◽  
Spin Order ◽  
Lattice Displacement ◽  
Far From Equilibrium ◽  
Crystalline System ◽  
Dynamical Control

AbstractThe spin-phonon interaction in spin density wave (SDW) systems often determines the free energy landscape that drives the evolution of the system. When a passing energy flux, such as photoexcitation, drives a crystalline system far from equilibrium, the resulting lattice displacement generates transient vibrational states. Manipulating intermediate vibrational states in the vicinity of the critical point, where the SDW order parameter changes dramatically, would then allow dynamical control over functional properties. Here we combine double photoexcitation with an X-ray free-electron laser (XFEL) probe to control and detect the lifetime and magnitude of the intermediate vibrational state near the critical point of the SDW in chromium. We apply Landau theory to identify the mechanism of control as a repeated partial quench and sub picosecond recovery of the SDW. Our results showcase the capabilities to influence and monitor quantum states by combining multiple optical photoexcitations with an XFEL probe. They open new avenues for manipulating and researching the behaviour of photoexcited states in charge and spin order systems near the critical point.

scholarly journals Geometry of the Rabi Problem and Duality of Loops

2020 ◽  
Vol 75 (5) ◽  
pp. 381-391 ◽  
Author(s):  
Heinz-Jürgen Schmidt
Keyword(s):  
Magnetic Field ◽  
Differential Geometry ◽  
Floquet Theory ◽  
Bloch Sphere ◽  
Classical Spin ◽  
Periodic Magnetic Field

AbstractWe investigate the motion of a classical spin processing around a periodic magnetic field using Floquet theory, as well as elementary differential geometry and considering a couple of examples. Under certain conditions, the role of spin and magnetic field can be interchanged, leading to the notion of “duality of loops” on the Bloch sphere.

Elementary solution of Classical Spin-Glass models

1986 ◽  
Vol 65 (1) ◽  
pp. 53-63 ◽  
Author(s):  
J. L. van Hemmen ◽  
D. Grensing ◽  
A. Huber ◽  
R. Kühn
Keyword(s):  
Spin Glass ◽  
Elementary Solution ◽  
Classical Spin

Correlation inequalities for some classical spin vector models

1975 ◽  
Vol 54 (6) ◽  
pp. 428-430 ◽  
Author(s):  
H. Kunz ◽  
Ch.-Ed. Pfister ◽  
P.-A. Vuillermot
Keyword(s):  
Correlation Inequalities ◽  
Spin Vector ◽  
Classical Spin
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