Quantum criticalities induced by Lifshitz transitions

Youhei Yamaji; Takahiro Misawa; Masatoshi Imada

doi:10.1016/j.jmmm.2006.10.713

Quantum criticalities induced by Lifshitz transitions

Youhei Yamaji^*, Takahiro Misawa, Masatoshi Imada

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We study electron correlation effects on quantum criticalities of Lifshitz transitions (LTs), using the mean-field theory based on a preexisting broken symmetry order, in two-dimensional systems. In the presence of interactions, LTs may become discontinuous in contrast to the continuous transition in the original proposal by Lifshitz for noninteracting systems. We find that the quantum criticality at the endpoint of discontinuous LTs, which we call the marginal quantum critical point, belongs to a different universality class from that of the mean-field Ising model.

Original language	English
Pages (from-to)	838-840
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.713
Publication status	Published - 2007 Mar 1
Externally published	Yes

Keywords

Fermi surface topology
Lifshitz transition
Quantum critical phenomena
Universality

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2006.10.713

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title = "Quantum criticalities induced by Lifshitz transitions",

abstract = "We study electron correlation effects on quantum criticalities of Lifshitz transitions (LTs), using the mean-field theory based on a preexisting broken symmetry order, in two-dimensional systems. In the presence of interactions, LTs may become discontinuous in contrast to the continuous transition in the original proposal by Lifshitz for noninteracting systems. We find that the quantum criticality at the endpoint of discontinuous LTs, which we call the marginal quantum critical point, belongs to a different universality class from that of the mean-field Ising model.",

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author = "Youhei Yamaji and Takahiro Misawa and Masatoshi Imada",

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TY - JOUR

T1 - Quantum criticalities induced by Lifshitz transitions

AU - Yamaji, Youhei

AU - Misawa, Takahiro

AU - Imada, Masatoshi

PY - 2007/3/1

Y1 - 2007/3/1

N2 - We study electron correlation effects on quantum criticalities of Lifshitz transitions (LTs), using the mean-field theory based on a preexisting broken symmetry order, in two-dimensional systems. In the presence of interactions, LTs may become discontinuous in contrast to the continuous transition in the original proposal by Lifshitz for noninteracting systems. We find that the quantum criticality at the endpoint of discontinuous LTs, which we call the marginal quantum critical point, belongs to a different universality class from that of the mean-field Ising model.

AB - We study electron correlation effects on quantum criticalities of Lifshitz transitions (LTs), using the mean-field theory based on a preexisting broken symmetry order, in two-dimensional systems. In the presence of interactions, LTs may become discontinuous in contrast to the continuous transition in the original proposal by Lifshitz for noninteracting systems. We find that the quantum criticality at the endpoint of discontinuous LTs, which we call the marginal quantum critical point, belongs to a different universality class from that of the mean-field Ising model.

KW - Fermi surface topology

KW - Lifshitz transition

KW - Quantum critical phenomena

KW - Universality

UR - http://www.scopus.com/inward/record.url?scp=33847252512&partnerID=8YFLogxK

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M3 - Article

AN - SCOPUS:33847252512

SN - 0304-8853

VL - 310

SP - 838

EP - 840

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

ER -

Quantum criticalities induced by Lifshitz transitions

Abstract

Keywords

ASJC Scopus subject areas

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