Order Parameter and Magnetization of Antiferromagnets in Mutually Parallel Staggered and Magnetic Fields

Hofmann, Christoph P.

doi:10.48550/arxiv.2002.02958

Cited by 2 publications

(4 citation statements)

References 12 publications

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“…5 Details on the effective loop evaluation can be found in Ref. [57]. The correction from the one-loop graph 6A is the same as for the quantities τ 4a ± (x−y), Eq.…”

Section: Three-dimensional Antiferromagnetsmentioning

confidence: 99%

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Antiferromagnetic Dispersion Relations and Nature of Magnon Pressure

Hofmann¹

2020

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We derive higher-order corrections in the magnon dispersion relations for two-and three-dimensional antiferromagnets exposed to magnetic and staggered fields that are mutually aligned. "Dressing" the magnons is the prerequisite to separate the low-temperature representation of the pressure into a piece due to noninteracting magnons and a piece that corresponds to the magnon-magnon interaction. Both in two and three spatial dimensions, the interaction in the pressure turns out to be attractive. While concrete figures refer to the spin-1 2 square-lattice and the spin-1 2 simple cubic lattice antiferromagnet, our results are valid for arbitrary bipartite geometry.

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“…5 Details on the effective loop evaluation can be found in Ref. [57]. The correction from the one-loop graph 6A is the same as for the quantities τ 4a ± (x−y), Eq.…”

Section: Three-dimensional Antiferromagnetsmentioning

confidence: 99%

“…Resorting to the renormalized representation for the total two-loop free energy density, derived in Ref. [57],…”

Section: 36)mentioning

confidence: 99%

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Antiferromagnetic Dispersion Relations and Nature of Magnon Pressure

Hofmann¹

2020

Preprint

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“…[1][2][3][4] -and more recently in Refs. [5][6][7][8] -here we continue exploring antiferromagnetic films.…”

Section: Introductionmentioning

confidence: 99%

Spin Order and Entropy in Antiferromagnetic Films Subjected to Magnetic Fields

Hofmann¹

2020

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Using systematic effective field theory, we explore the properties of antiferromagnetic films subjected to magnetic and staggered fields that are either mutually aligned or mutually orthogonal. We provide lowtemperature series for the entropy density in either case up to two-loop order. Invoking staggered, uniform and sublattice magnetizations of the bipartite antiferromagnet, we investigate the subtle order-disorder phenomena in the spin arrangement, induced by temperature, magnetic and staggered fields -some of which are quite counterintuitive. In the figures we focus on the spin-1 2 square-lattice antiferromagnet, but our results are valid for any other bipartite two-dimensional lattice.

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Order Parameter and Magnetization of Antiferromagnets in Mutually Parallel Staggered and Magnetic Fields

Cited by 2 publications

References 12 publications

Antiferromagnetic Dispersion Relations and Nature of Magnon Pressure

Antiferromagnetic Dispersion Relations and Nature of Magnon Pressure

Spin Order and Entropy in Antiferromagnetic Films Subjected to Magnetic Fields

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