Dilution Effects on Two-Dimensional Heisenberg Antiferromagnets with Non-Magnetic Spin-Gapped Ground State | Zendy

Chitoshi Yasuda | Zendy; Synge Todo | Zendy; Munehisa Matsumoto | Zendy; Hajime Takayama | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Dilution Effects on Two-Dimensional Heisenberg Antiferromagnets with Non-Magnetic Spin-Gapped Ground State

Author(s) -

Chitoshi Yasuda,

Synge Todo,

Munehisa Matsumoto,

Hajime Takayama

Publication year - 2002

Publication title -

progress of theoretical physics supplement

Language(s) - English

Resource type - Journals

ISSN - 0375-9687

DOI - 10.1143/ptps.145.339

Subject(s) - spins , ground state , dilution , antiferromagnetism , condensed matter physics , singlet state , physics , spin (aerodynamics) , heisenberg model , coupling (piping) , quantum , quantum mechanics , materials science , thermodynamics , metallurgy , excited state

Dilution effects on spin-1/2 quantum Heisenberg antiferromagnets with anon-magnetic spin-gapped ground state are studied by means of the qunatum MonteCarlo simulation. In the site-diluted system, an antiferromagnetic long-rangeorder (AF-LRO) is induced at an infinitesimal concentration of dilution due toan effective coupling $\tilde{J}_{mn}$ between induced magnetic moments. In thebond-diluted case, on the other hand, the AF-LRO is not induced up to a certainconcentration of dilution due to singlet pairs reformed by an AF coupling$\tilde{J}_{\rm af}$ between the edge spins of the diluted bond through thetwo-dimensional shortest paths. The competition between $\tilde{J}_{mn}$ and$\tilde{J}_{\rm af}$ yields peculiar phenomena in the bond-diluted system.Comment: 6 pages, 3 figures. to appear in Prog. Theor. Phys. Supp

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research