Ising phases of Heisenberg ladders in a magnetic field.

Ising phases of Heisenberg ladders in a magnetic field. Research Abstract Details 

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Ising phases of Heisenberg ladders in a magnetic field. Abstract Text:

Karlo Penc,Jean-Baptiste Fouet,Shin Miyahara,Oleg Tchernyshyov, Mila,Karlo Penc,Jean-Baptiste Fouet,Shin Miyahara,Oleg Tchernyshyov, Mila,

We show that Dzyaloshinskii-Moriya (DM) interactions can substantially modify the phase diagram of spin-1/2 Heisenberg ladders in a magnetic field provided they compete with exchange. For nonfrustrated ladders, they induce a local magnetization along the DM vector that turns the gapless intermediate phase into an Ising phase with broken translational symmetry, while for frustrated ladders, they extend the Ising order of the half-integer plateau to the surrounding gapless phases of the purely Heisenberg case. Implications for experimental ladder and dimer systems are discussed.

Ising phases of Heisenberg ladders in a magnetic field. Publishing Authors By Initials

K Penc,JB Fouet,S Miyahara,O Tchernyshyov,F Mila,K Penc,JB Fouet,S Miyahara,O Tchernyshyov,F Mila,

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Ising phases of Heisenberg ladders in a magnetic field. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Physical review letters

VOLUME: 99

Page Numbers: 117201

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 10

MONTH: 09

YEAR: 2007

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LANGUAGE: eng

NlmUniqueID: 401141

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AFFILIATION: Research Institute for Theoretical Solid State Physics and Optics, H-1525 Budapest, P.O.B. 49, Hungary.

Country: United States

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MEDLINETA: Phys Rev Lett

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