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Emergence of higher...
Emergence of higher order rotational symmetry in the hidden order phase of URu2Si2
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Kanchanavatee, N. (författare)
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Janoschek, M. (författare)
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Huang, K. (författare)
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White, B. D. (författare)
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Riseborough, P. S. (författare)
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- Balatsky, Alexander V. (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Los Alamos National Laboratory, Los Alamos, USA
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Maple, M. B. (författare)
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(creator_code:org_t)
- 2016-09-30
- 2017
- Engelska.
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Ingår i: Philosophical Magazine. - : Informa UK Limited. - 1478-6435 .- 1478-6443. ; 97:2, s. 144-154
- Relaterad länk:
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https://www.osti.gov...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Electrical resistivity measurements were performed as functions of temperature, magnetic field, and angle theta between the magnetic field and the c-axis of a URu2Si2 single crystal. The resistivity exhibits a two-fold oscillation as a function of theta at high temperatures, which undergoes a 180 degrees-phase shift (sign change) with decreasing temperature at around 35 K. The hidden order transition is manifested as a minimum in the magnetoresistance and amplitude of the two-fold oscillation. Interestingly, the resistivity also showed four-fold, six-fold, and eight-fold symmetries at the hidden order transition. These higher order symmetries were also detected at low temperatures, which could be a sign of the formation of another pseudogap phase above the superconducting transition, consistent with recent evidence for a pseudogap from point-contact spectroscopy measurements and NMR. Measurements of the magnetisation of single crystalline URu2Si2 with the magnetic field applied parallel and perpendicular to the crystallographic c-axis revealed regions with linear temperature dependencies between the hidden order transition temperature and about 25 K. This T-linear behaviour of the magnetisation may be associated with the formation of a precursor phase or 'pseudogap' in the density of states in the vicinity of 30-35 K.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Hidden order
- rotational symmetry
- heavy-fermion metals
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- art (ämneskategori)
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