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Magnetic signatures...
Magnetic signatures of domain walls in s plus is and s plus id superconductors : Observability and what that can tell us about the superconducting order parameter
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- Benfenati, Andrea (author)
- KTH,Kondenserade materiens teori
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- Barkman, Mats (author)
- KTH,Kondenserade materiens teori
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- Winyard, Thomas (author)
- Univ Leeds, Sch Math, Leeds LS2 9JT, W Yorkshire, England.
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- Wormald, Alex (author)
- School of Mathematics, University of Leeds, Leeds, LS2 9JT, United Kingdom
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- Speight, Martin (author)
- Univ Leeds, Sch Math, Leeds LS2 9JT, W Yorkshire, England.
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- Babaev, Egor (author)
- KTH,Kondenserade materiens teori
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(creator_code:org_t)
- AMER PHYSICAL SOC, 2020
- 2020
- English.
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In: Physical Review B. - : AMER PHYSICAL SOC. - 2469-9950 .- 2469-9969. ; 101:5
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- One of the defining features of spontaneously broken time-reversal symmetry (BTRS) is the existence of domain walls, the detection of which would be strong evidence for such systems. There is keen interest in BTRS currently, in part, due to recent muon spin rotation experiments, which have pointed towards Ba1-xKxFe2As2 exhibiting a remarkable case of s-wave superconductivity with spontaneously broken time-reversal symmetry. A key question, however, is how to differentiate between the different theoretical models which describe such a state. Two particularly popular choices of model are s + is and s + id superconducting states. In this paper, we obtain solutions for domain walls in s + is and s + id systems, including the effects of lattice anisotropies. We show that, in general, both models exhibit spontaneous magnetic fields that extend along the entire length of the domain wall. We demonstrate the qualitative difference between the magnetic signatures of s + is and s + id domain walls and propose a procedure to extract the superconducting pairing symmetry from the magnetic-field response of domain walls.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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