75As NMR-NQR study in superconducting LiFeAs
نویسندگان
چکیده
منابع مشابه
Pressure dependence of coherence-incoherence crossover behavior in KFe2As2 observed by resistivity and 75As-NMR/NQR
We present the results of 75 As nuclear magnetic resonance (NMR), nuclear quadrupole resonance (NQR), and resistivity measurements in KFe 2 As 2 under pressure ( p ). The temperature dependence of the NMR shift, nuclear spin-lattice relaxation time ( T 1 ), and resistivity show a crossover between a high-temperature incoherent, local-moment behavior and a low-temperature coherent behavior at a ...
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Xiaohang Zhang,1,* Bumsung Lee,2 Seunghyun Khim,2 Kee Hoon Kim,2 Richard L. Greene,1 and Ichiro Takeuchi3 1CNAM and Department of Physics, University of Maryland, College Park, Maryland 20742, USA 2CeNSCMR, Department of Physics and Astronomy, Seoul National University, Seoul 151-747, South Korea 3Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20...
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A non-trivial temperature evolution of superconductivity including a temperature-induced phase transition between two superconducting phases or even a time-reversal symmetry breaking order parameter is in principle expected in multiband superconductors such as iron-pnictides. Here we present scanning tunnelling spectroscopy data of LiFeAs which reveal two distinct superconducting phases: at = 1...
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The NMR/NQR group has continued its general research plan of studying current problems of condensed matter physics by employing NMR (nuclear magnetic resonance) and NQR (nuclear quadrupole resonance) methods. These spectroscopies allow one to investigate electronic properties in solids at a microscopic level and thus provide an essential contribution for a better understanding of the materials ...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2012
ISSN: 1434-6028,1434-6036
DOI: 10.1140/epjb/e2012-30164-5