Dynamical Properties of the One-Dimensional Spin-1/2 Bose-Hubbard Model near a Mott-Insulator to Ferromagnetic-Liquid Transition

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https://doi.org/10.1103/PhysRevLett.103.110401
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Dynamical Properties of the One-Dimensional Spin-1/2 Bose-Hubbard Model near a Mott-Insulator to Ferromagnetic-Liquid Transition. / Zvonarev, M. B.; Giamarchi, T.; Cheianov, Vadim.
In: Physical review letters, Vol. 103, No. 11, 110401, 11.09.2009, p. -.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{2a5f94afb5d7412bb768cb90f2f1fcca,

title = "Dynamical Properties of the One-Dimensional Spin-1/2 Bose-Hubbard Model near a Mott-Insulator to Ferromagnetic-Liquid Transition",

abstract = "We investigate the dynamics of the one-dimensional strongly repulsive spin-1/2 Bose-Hubbard model for filling nu <= 1. While at nu = 1 the system is a Hubbard-Mott insulator exhibiting dynamical properties of the Heisenberg ferromagnet, at nu < 1 it is a ferromagnetic liquid with complex spin dynamics. We find that close to the insulator-liquid transition the system admits for a complete separation of spin and density degrees of freedom valid at all energy and momentum scales within the t-J approximation. This allows us to derive the propagator of transverse spin waves and the shape of the magnon peak in the dynamic spin structure factor.",

author = "Zvonarev, {M. B.} and T. Giamarchi and Vadim Cheianov",

year = "2009",

month = sep,

day = "11",

doi = "10.1103/PhysRevLett.103.110401",

language = "English",

volume = "103",

pages = "--",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "11",

}

RIS

TY - JOUR

T1 - Dynamical Properties of the One-Dimensional Spin-1/2 Bose-Hubbard Model near a Mott-Insulator to Ferromagnetic-Liquid Transition

AU - Zvonarev, M. B.

AU - Giamarchi, T.

AU - Cheianov, Vadim

PY - 2009/9/11

Y1 - 2009/9/11

N2 - We investigate the dynamics of the one-dimensional strongly repulsive spin-1/2 Bose-Hubbard model for filling nu <= 1. While at nu = 1 the system is a Hubbard-Mott insulator exhibiting dynamical properties of the Heisenberg ferromagnet, at nu < 1 it is a ferromagnetic liquid with complex spin dynamics. We find that close to the insulator-liquid transition the system admits for a complete separation of spin and density degrees of freedom valid at all energy and momentum scales within the t-J approximation. This allows us to derive the propagator of transverse spin waves and the shape of the magnon peak in the dynamic spin structure factor.

AB - We investigate the dynamics of the one-dimensional strongly repulsive spin-1/2 Bose-Hubbard model for filling nu <= 1. While at nu = 1 the system is a Hubbard-Mott insulator exhibiting dynamical properties of the Heisenberg ferromagnet, at nu < 1 it is a ferromagnetic liquid with complex spin dynamics. We find that close to the insulator-liquid transition the system admits for a complete separation of spin and density degrees of freedom valid at all energy and momentum scales within the t-J approximation. This allows us to derive the propagator of transverse spin waves and the shape of the magnon peak in the dynamic spin structure factor.

UR - http://www.scopus.com/inward/record.url?scp=69949183191&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.103.110401

DO - 10.1103/PhysRevLett.103.110401

M3 - Journal article

VL - 103

SP - -

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 11

M1 - 110401

ER -

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