Edwin Kermarrec
Associate Professor (Université Paris-Saclay)
edwin.kermarrec_at_universite-paris-saclay.fr
Office N309 / Building 510
+33 (0)1 69 15 53 40
Research interests
My research interest are centered on the investigation of new exotic quantum states in bulk materials using complementary spectroscopic techniques (Nuclear Magnetic Resonance, Muon Spin Relaxation and Inelastic Neutron Scattering). In particular, I focused on frustrated magnetic compounds (kagomé, triangular, pyrochlore) which may host a quantum spin liquid state and materials with strong spin-orbit coupling.
Recent publications
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Article dans une revue
J. Gaudet, K. Ross, Edwin Kermarrec, N. Butch, G. Ehlers, et al.. Gapless quantum excitations from an Ice-like Splayed Ferromagnetic ground state in stoichiometric Yb 2 Ti 2 O 7. Physical Review B, 2016, 93 (6), pp.064406. ⟨10.1103/PhysRevB.93.064406⟩. ⟨hal-04312173⟩
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Article dans une revue
Edwin Kermarrec, D. Maharaj, J. Gaudet, K. Fritsch, D. Pomaranski, et al.. Gapped and gapless short-range-ordered magnetic states with ( 1 2 , 1 2 , 1 2 ) wave vectors in the pyrochlore magnet Tb 2 + x Ti 2 − x O 7 + δ. Physical Review B, 2015, 92 (24), pp.245114. ⟨10.1103/PhysRevB.92.245114⟩. ⟨hal-04311897⟩
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Article dans une revue
J. Gaudet, D. Maharaj, G. Sala, Edwin Kermarrec, K. Ross, et al.. Neutron spectroscopic study of crystalline electric field excitations in stoichiometric and lightly stuffed Yb2Ti2O7. Physical Review B, 2015, 92 (13), pp.134420. ⟨10.1103/PhysRevB.92.134420⟩. ⟨hal-04312006⟩
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Article dans une revue
Edwin Kermarrec, C. Marjerrison, C. Thompson, D. Maharaj, K. Levin, et al.. Frustrated fcc antiferromagnet Ba 2 YOsO 6 : Structural characterization, magnetic properties, and neutron scattering studies. Physical Review B, 2015, 91 (7), pp.075133. ⟨10.1103/PhysRevB.91.075133⟩. ⟨hal-04312034⟩
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Article dans une revue
B. Gaulin, Edwin Kermarrec, M. Dahlberg, M. Matthews, Fabrice Bert, et al.. Quenched crystal-field disorder and magnetic liquid ground states in Tb2Sn2−xTixO7. Physical Review B, 2015, 91 (24), pp.245141. ⟨10.1103/PhysRevB.91.245141⟩. ⟨hal-04312015⟩
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Article dans une revue
Lidong Pan, Se Kwon Kim, A. Ghosh, Christopher M Morris, Kate A Ross, et al.. Low-energy electrodynamics of novel spin excitations in the quantum spin ice Yb2Ti2O7. Nature Communications, 2014, 5 (1), pp.4970. ⟨10.1038/ncomms5970⟩. ⟨hal-04312040⟩
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Article dans une revue
L. Clark, G. J. Nilsen, Edwin Kermarrec, G. Ehlers, K. S. Knight, et al.. From Spin Glass to Quantum Spin Liquid Ground States in Molybdate Pyrochlores. Physical Review Letters, 2014, 113 (11), pp.117201. ⟨10.1103/PhysRevLett.113.117201⟩. ⟨hal-04312045⟩
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Article dans une revue
K. Fritsch, Edwin Kermarrec, K. Ross, Y. Qiu, J. Copley, et al.. Temperature and magnetic field dependence of spin-ice correlations in the pyrochlore magnet Tb 2 Ti 2 O 7. Physical Review B, 2014, 90 (1), pp.014429. ⟨10.1103/PhysRevB.90.014429⟩. ⟨hal-04312047⟩
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Article dans une revue
Edwin Kermarrec, A. Zorko, Fabrice Bert, R. Colman, B. Koteswararao, et al.. Spin dynamics and disorder effects in the S = 1 2 kagome Heisenberg spin-liquid phase of kapellasite. Physical Review B, 2014, 90 (20), pp.205103. ⟨10.1103/PhysRevB.90.205103⟩. ⟨hal-04312018⟩
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Article dans une revue
B. Bernu, C. Lhuillier, Edwin Kermarrec, Fabrice Bert, Philippe Mendels, et al.. Exchange energies of kapellasite from high-temperature series analysis of the kagome lattice J 1 − J 2 − J d -Heisenberg model. Physical Review B, 2013, 87 (15), pp.155107. ⟨10.1103/PhysRevB.87.155107⟩. ⟨hal-04312054⟩
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Thèse
Edwin Kermarrec. Nouveaux états quantiques de spin induits par frustration magnétique sur le réseau kagome. Autre [cond-mat.other]. Université Paris Sud - Paris XI, 2012. Français. ⟨NNT : 2012PA112346⟩. ⟨tel-00783605⟩
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Article dans une revue
B. Fåk, E. Kermarrec, L. Messio, B. Bernu, C. Lhuillier, et al.. Kapellasite: A Kagome Quantum Spin Liquid with Competing Interactions. Physical Review Letters, 2012, 109 (3), ⟨10.1103/PhysRevLett.109.037208⟩. ⟨hal-02452849⟩