Higgins Hall 330E
Telephone: 617-552-4128
Email: michael.graf@bc.edu
ORCID
Experimental condensed-matter physics, including: superconductivity, magnetism, and their correlation in heavy-fermion systems, quantum confinement effects in nanostructured metals and semi-metals; and quantum tunneling of magnetization in Ho3+ ions diluted into LiYF4.
鈥淓ffect of structural disorder on the Kitaev magnet Ag3LiIr2O6,鈥 F. Bahrami鈥, E. M. Kenney鈥, C. Wang, A. Berlie, O. I. Lebedev, M. J. Graf, and F. Tafti, Phys. Rev. B听103, 094427 (2021).鈥听co-first authors
鈥淎bsence of local moments in the kagome metal KV3Sb5听as determined by muon spin spectroscopy,鈥 E. M. Kenney, B. R. Ortiz, C. Wang, S. D. Wilson, and M. J. Graf, J. Phys.: Condens. Matter听33, 235801 (2021).
鈥淪uperconductivity in the Z2听kagome metal KV3Sb5,鈥 B. R. Ortiz, P. M. Sarte, E. M. Kenney, S. M. L. Teicher, R. Seshadri, M. J. Graf, and S. D. Wilson, Phys. Rev. Mat.听5, 034801 (2021).
"Monopole-limited nucleation of magnetism in Eu2Ir2O7," Physical Review B听 101, 174435 (2020).
Competition between static and dynamic magnetism in the Kitaev spin liquid material Cu2IrO3, E. M. Kenney, C. U. Segre, W. Lafargue-Dit-Hauret, O. I. Lebedev, M. Abramchuk, A. Berlie, S. P. Cottrell, G. Simutis, F. Bahrami, N. E. Mordvinova, J. McChesney, G. Fabbris, D. Haskel, X. Rocquefelte, M. J. Graf, and F. Tafti, Phys. Rev. B听100, 094418 (2019)听[Editor鈥檚 selection].
Field-tunable quantum disordered ground state in the triangular lattice antiferromagnet NaYbO2, M. Bordelon, E. M. Kenney, T. Hogan, L. Posthuma, M. Kavand, Y. Lyu, M. Sherwin, C. Brown, M. J. Graf, L. Balents, and S. D. Wilson, Nature Physics听15, 1058 (2019).
Suppression of听渭+听depolarization by fast magnetic fluctuations at avoided level crossings for Ho3+听ions in CaWO4,听E. Kenney, A. Amato, S. R. Giblin, B. Z. Malkin, and M. J. Graf,听Phys. Rev. B听98, 134424 (2018).听
Quasistatic antiferromagnetism in the quantum wells of SmTiO3/SrTiO3听heterostructures,听R. F. Need, P. B. Marshall, E. Kenney, A. Suter, T. Prokscha, Z. Salman, B. J. Kirby, S. Stemmer, M. J. Graf, and S. D. Wilson,听npj Quantum Materials听3, 7 (2018).
Spin Dynamics in the Single-Ion Magnet [Er(W5O18)2]9-, M. Mariani, F. Borsa, M. J. Graf, S. Sanna, M. Filibian, T. Orlando, K. P. V. Sabareesh, S. Cardona, E. Coronado, and A. Lascialfari, Phys. Rev. B听听97, 144414 (2018).
Spiral Modes and the Observation of Quantized Conductance in the Surface Bands of Bismuth Nanowires, T. E. Huber, S. Johnson, L. Konopko, A. Nikolaeva, A. Kobylianskaya, and M. J. Graf, Scientific Reports听7, 15569 (2017).
Evolution of Magnetism in LnCuGa3听(Ln = La 鈥 Nd, Sm 鈥 Gd) Studied via 碌SR and Specific Heat, M. J. Graf, J. D. Hettinger, K. Nemeth, R. Dally, C. Baines, U. Subbarao, and S. C. Peter, J. Magn. Magn. Mater.听444, 236 (2017).
Disordered dimer state in electron-doped Sr3Ir2O7, T. Hogan, R. Dally, M. Upton, J. P. Clancy, K. Finkelstein, Y.-J. Kim, M. J. Graf, and S. D. Wilson, Phys. Rev. B 94, 100401(R)听 (2016).
Influence of hydrostatic pressure on the bulk magnetic properties of Eu2Ir2O7, G. Prando, R. Dally, W. Schottenhamel, Z. Guguchia, S.-H. Baek, R. Aeschlimann, A.U.B. Wolter, S. D. Wilson, B. B眉chner, and M. J. Graf, Phys. Rev. B 93, 104422 (2016).
Short-Range Correlations in the Magnetic Ground State of Na4Ir3O8 , R. Dally, T. Hogan, A. Amato, H. Leutkens, C. Baines, J. Rodriguez-Rivera, M. J. Graf, and S. D. Wilson, Phys. Rev. Lett. 113, 247601 (2014).
Magnetic Order in the Pyrochlore Iridates A2Ir2O7 (A = Y, Yb), S. M. Disseler, C. Dhital, A. Amato, S. R. Giblin, C. de la Cruz, S. D. Wilson, and M. J. Graf, Phys. Rev. B 86, 014428 (2012).
Evolution of spin relaxation processes in LiY1-xHoxF4 with increasing x studied via ac-susceptibility and muon spin relaxation, R. C. Johnson, B. Z. Malkin, J. S. Lord, S. R. Giblin, A. Amato, C. Baines, A. Lascialfari, B. Barbara, and M. J. Graf, Phys. Rev. B 86, 014427 (2012).
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