Universität zu Köln

Schattner, Yoni, Gerlach, Max H., Trebst, Simon ORCID: 0000-0002-1479-9736 and Berg, Erez (2016). Competing Orders in a Nearly Antiferromagnetic Metal. Phys. Rev. Lett., 117 (9). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We study the onset of spin-density wave order in itinerant electron systems via a two-dimensional lattice model amenable to numerically exact, sign-problem-free determinantal quantum Monte Carlo simulations. The finite-temperature phase diagram of the model reveals a dome-shaped d-wave superconducting phase near the magnetic quantum phase transition. Above the critical superconducting temperature, an extended fluctuation regime manifests itself in the opening of a gap in the electronic density of states and an enhanced diamagnetic response. While charge density wave fluctuations are moderately enhanced in the proximity of the magnetic quantum phase transition, they remain short ranged. The striking similarity of our results to the phenomenology of many unconventional superconductors points a way to a microscopic understanding of such strongly coupled systems in a controlled manner.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schattner, Yoni UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerlach, Max H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Trebst, Simon UNSPECIFIED orcid.org/0000-0002-1479-9736 UNSPECIFIED Berg, Erez UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-266246
DOI:	10.1103/PhysRevLett.117.097002
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	117
Number:	9
Date:	2016
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTUM CRITICAL-POINT; SPIN-FERMION MODEL; MONTE-CARLO; T-C; TEMPERATURE; PSEUDOGAP; BEHAVIOR; SYSTEMS; STATE Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26624