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Education

Ph.D., Moscow State University, 1997

M.S., Moscow State University, 1994

Scientific & Professional Societies

Honors and Awards

Fellow, American Physical Society, 2016

Selected Publications

2023

Singh, S., Stavropoulos, P.P., Perkins, N.B. (2023). Phonon dynamics in the generalized Kitaev spin liquid. Physical Review B. 107 (21), [214428].
DOI: 10.1103/PhysRevB.107.214428

2022

Feng, K., Swarup, S., Perkins, N.B. (2022). Footprints of Kitaev spin liquid in the Fano lineshape of Raman-active optical phonons. Physical Review B. 105 (12), [L121108].
DOI: 10.1103/PhysRevB.105.L121108

Halloran, T., Wang, Y., Li, M., Rousochatzakis, I., Chauhan, P., Stone, M.B., Takayama, T., Takagi, H., Armitage, N.P., Perkins, N.B., Broholm, C. (2022). Magnetic excitations and interactions in the Kitaev hyperhoneycomb iridate β-Li2IrO3. Physical Review B. 106 (6), [064423].
DOI: 10.1103/PhysRevB.106.064423

Yang, Y., Wang, Y., Rousochatzakis, I., Ruiz, A., Analytis, J.G., Burch, K.S., Perkins, N.B. (2022). Signatures of non-Loudon-Fleury Raman scattering in the Kitaev magnet β-Li2IrO3. Physical Review B. 105 (24), [L241101].
DOI: 10.1103/PhysRevB.105.L241101

Feng, K., Shiralieva, A., Perkins, N.B. (2022). Sound attenuation in the hyperhoneycomb Kitaev spin liquid. Physical Review B. 106 (14), [144424].
DOI: 10.1103/PhysRevB.106.144424

Kao, W.H., Perkins, N.B. (2022). Spin- and flux-gap renormalization in the random Kitaev spin ladder. Physical Review B. 106 (10), [L100402].
DOI: 10.1103/PhysRevB.106.L100402

2021

Kao, W.H., Perkins, N.B. (2021). Disorder upon disorder: Localization effects in the Kitaev spin liquid. Annals of Physics. [168506].
DOI: 10.1016/j.aop.2021.168506

Shiralieva, A., Prokoshin, A., Perkins, N.B. (2021). Magnetoelastic effects in the hyperhoneycomb Kitaev spin liquid. Fizika Nizkikh Temperatur. 47 (9), [851-861].
 

Shiralieva, A., Prokoshin, A., Perkins, N.B. (2021). Magnetoelastic effects in the hyperhoneycomb Kitaev spin liquid. Low Temperature Physics. 47 (9), [784-793].
DOI: 10.1063/10.0005801

Ruiz, A., Breznay, N.P., Li, M., Rousochatzakis, I., Allen, A., Zinda, I., Nagarajan, V., Lopez, G., Islam, Z., Upton, M.H., Kim, J., Said, A.H., Huang, X.R., Gog, T., Casa, D., Birgeneau, R.J., Koralek, J.D., Analytis, J.G., Perkins, N.B., Frano, A. (2021). Magnon-spinon dichotomy in the Kitaev hyperhoneycomb β-Li2IrO3. Physical Review B. 103 (18), [184404].
DOI: 10.1103/PhysRevB.103.184404

Yang, Y., Li, M., Rousochatzakis, I., Perkins, N.B. (2021). Non-Loudon-Fleury Raman scattering in spin-orbit coupled Mott insulators. Physical Review B. 104 (14), [144412].
DOI: 10.1103/PhysRevB.104.144412

Feng, K., Ye, M., Perkins, N.B. (2021). Temperature evolution of the phonon dynamics in the Kitaev spin liquid. Physical Review B. 103 (21), [214416].
DOI: 10.1103/PhysRevB.103.214416

Kao, W.H., Knolle, J., Halasz, G.B., Moessner, R., Perkins, N.B. (2021). Vacancy-Induced Low-Energy Density of States in the Kitaev Spin Liquid. Physical Review X. 11 (1), [011034].
DOI: 10.1103/PhysRevX.11.011034

2020

Feng, K., Perkins, N.B., Burnell, F.J. (2020). Further insights into the thermodynamics of the Kitaev honeycomb model. Physical Review B. 102 (22), [224402].
DOI: 10.1103/PhysRevB.102.224402

Ye, M., Fernandes, R.M., Perkins, N.B. (2020). Phonon dynamics in the Kitaev spin liquid. Physical Review Research. 2 (3), [033180].
DOI: 10.1103/PhysRevResearch.2.033180

Yang, Y., Perkins, N.B., Koç, F., Lin, C.H., Rousochatzakis, I. (2020). Quantum-classical crossover in the spin-12 Heisenberg-Kitaev kagome magnet. Physical Review Research. 2 (3), [033217].
DOI: 10.1103/PhysRevResearch.2.033217

Li, M., Rousochatzakis, I., Perkins, N.B. (2020). Reentrant incommensurate order and anomalous magnetic torque in the Kitaev magnet β-Li2Ir O3. Physical Review Research. 2 (3), [033328].
DOI: 10.1103/PhysRevResearch.2.033328

Li, M., Rousochatzakis, I., Perkins, N.B. (2020). Unconventional magnetic field response of the hyperhoneycomb Kitaev magnet β-Li2IrO3. Physical Review Research. 2 (1), [013065].
DOI: 10.1103/PhysRevResearch.2.013065

2019

Knolle, J., Moessner, R., Perkins, N.B. (2019). Bond-Disordered Spin Liquid and the Honeycomb Iridate H ₃ LiIr ₂ O ₆: Abundant Low-Energy Density of States from Random Majorana Hopping. Physical review letters. 122 (4), [047202].
DOI: 10.1103/PhysRevLett.122.047202

Li, M., Perkins, N.B., Rousochatzakis, I. (2019). Collective spin dynamics of Z2 vortex crystals in triangular Kitaev-Heisenberg antiferromagnets. Physical Review Research. 1 (1), [013002].
DOI: 10.1103/PhysRevResearch.1.013002

Halász, G.B., Kourtis, S., Knolle, J., Perkins, N.B. (2019). Observing spin fractionalization in the Kitaev spin liquid via temperature evolution of indirect resonant inelastic X-ray scattering. Physical Review B. 99 (18), [184417].
DOI: 10.1103/PhysRevB.99.184417

Rousochatzakis, I., Kourtis, S., Knolle, J., Moessner, R., Perkins, N.B. (2019). Quantum spin liquid at finite temperature: Proximate dynamics and persistent typicality. Physical Review B. 100 (4), [045117].
Accepted author manuscriptDOI: 10.1103/PhysRevB.100.045117

2018

Rousochatzakis, I., Perkins, N.B. (2018). Magnetic field induced evolution of intertwined orders in the Kitaev magnet β-Li2IrO3. Physical Review B. 97 (17), [174423].
DOI: 10.1103/PhysRevB.97.174423

Ducatman, S., Rousochatzakis, I., Perkins, N.B. (2018). Magnetic structure and excitation spectrum of the hyperhoneycomb Kitaev magnet β-Li2IrO3. Physical Review B. 97 (12), [125125].
DOI: 10.1103/PhysRevB.97.125125

Rousochatzakis, I., Sizyuk, Y., Perkins, N.B. (2018). Quantum spin liquid in the semiclassical regime. Nature communications. 9 (1), [1575].
DOI: 10.1038/s41467-018-03934-1

Fu, J., Knolle, J., Perkins, N.B. (2018). Three types of representation of spin in terms of Majorana fermions and an alternative solution of the Kitaev honeycomb model. Physical Review B. 97 (11), [115142].
DOI: 10.1103/PhysRevB.97.115142

2017

Rousochatzakis, I., Perkins, N.B. (2017). Classical Spin Liquid Instability Driven by Off-Diagonal Exchange in Strong Spin-Orbit Magnets. Physical review letters. 118 (14), [147204].
DOI: 10.1103/PhysRevLett.118.147204

Fu, J., Rau, J.G., Gingras, M.J.P., Perkins, N.B. (2017). Fingerprints of quantum spin ice in Raman scattering. Physical Review B. 96 (3), [035136].
DOI: 10.1103/PhysRevB.96.035136

Wölfle, P., Perkins, N.B., Sizyuk, Y. (2017). Free energy of quantum spin systems: Functional integral representation. Physical Review B. 95 (18), [184408].
DOI: 10.1103/PhysRevB.95.184408

Chern, G.W., Sizyuk, Y., Price, C., Perkins, N.B. (2017). Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions. Physical Review B. 95 (14), [144427].
DOI: 10.1103/PhysRevB.95.144427

Halász, G.B., Perreault, B., Perkins, N.B. (2017). Probing spinon nodal structures in three-dimensional kitaev spin liquids. Physical review letters. 119 (9), [097202].
DOI: 10.1103/PhysRevLett.119.097202

Perkins, N. (2017). Quantum magnetism: Kitaev physics crystalized. Nature Physics. 13 (11), [1041-1042].
DOI: 10.1038/nphys4298

2016

Perreault, B., Knolle, J., Perkins, N.B., Burnell, F.J. (2016). Raman scattering in correlated thin films as a probe of chargeless surface states. Physical Review B. 94 (6), [060408].
DOI: 10.1103/PhysRevB.94.060408

Halász, G.B., Perkins, N.B., Van Den Brink, J. (2016). Resonant Inelastic X-Ray Scattering Response of the Kitaev Honeycomb Model. Physical review letters. 117 (12), [127203].
DOI: 10.1103/PhysRevLett.117.127203

Perreault, B., Knolle, J., Perkins, N.B., Burnell, F.J. (2016). Resonant Raman scattering theory for Kitaev models and their Majorana fermion boundary modes. Physical Review B. 94 (10), [104427].
DOI: 10.1103/PhysRevB.94.104427

Sizyuk, Y., Wölfle, P., Perkins, N.B. (2016). Selection of direction of the ordered moments in Na2IrO3 and α-RuCl3. Physical Review B. 94 (8), [085109].
DOI: 10.1103/PhysRevB.94.085109

2015

Sizyuk, Y., Perkins, N.B., Wölfle, P. (2015). Lifting mean-field degeneracies in anisotropic classical spin systems. Physical Review B - Condensed Matter and Materials Physics. 92 (15), [155131].
DOI: 10.1103/PhysRevB.92.155131

Rousochatzakis, I., Reuther, J., Thomale, R., Rachel, S., Perkins, N.B. (2015). Phase diagram and quantum order by disorder in the kitaev K₁ - K₂ honeycomb magnet. Physical Review X. 5 (4), [041035].
DOI: 10.1103/PhysRevX.5.041035

Torchinsky, D.H., Chu, H., Zhao, L., Perkins, N.B., Sizyuk, Y., Qi, T., Cao, G., Hsieh, D. (2015). Structural distortion-induced magnetoelastic locking in sr2iro4 revealed through nonlinear optical harmonic generation. Physical review letters. 114 (9), [096404].
DOI: 10.1103/PhysRevLett.114.096404

Perreault, B., Knolle, J., Perkins, N.B., Burnell, F.J. (2015). Theory of Raman response in three-dimensional Kitaev spin liquids: Application to β - comγpounds. Physical Review B - Condensed Matter and Materials Physics. 92 (9), [094439].
DOI: 10.1103/PhysRevB.92.094439

2014

Sizyuk, Y., Price, C., Wölfle, P., Perkins, N.B. (2014). Importance of anisotropic exchange interactions in honeycomb iridates: Minimal model for zigzag antiferromagnetic order in Na2 IrO3. Physical Review B - Condensed Matter and Materials Physics. 90 (15), [155126].
DOI: 10.1103/PhysRevB.90.155126

Perkins, N.B., Sizyuk, Y., Wölfle, P. (2014). Interplay of many-body and single-particle interactions in iridates and rhodates. Physical Review B - Condensed Matter and Materials Physics. 89 (3), [035143].
DOI: 10.1103/PhysRevB.89.035143

Knolle, J., Chern, G.W., Kovrizhin, D.L., Moessner, R., Perkins, N.B. (2014). Raman scattering signatures of Kitaev spin liquids in A2IrO3 iridates with A=Na or Li. Physical review letters. 113 (18), [187201].
DOI: 10.1103/PhysRevLett.113.187201

Ducatman, S., Fernandes, R.M., Perkins, N.B. (2014). Theory of the evolution of magnetic order in Fe1+yTe compounds with increasing interstitial iron. Physical Review B - Condensed Matter and Materials Physics. 90 (16), [165123].
DOI: 10.1103/PhysRevB.90.165123

2013

Choi, E., Chern, G.W., Perkins, N.B. (2013). Chiral magnetism and helimagnons in a pyrochlore antiferromagnet. Physical Review B - Condensed Matter and Materials Physics. 87 (5), [054418].
DOI: 10.1103/PhysRevB.87.054418

Price, C., Perkins, N.B. (2013). Finite-temperature phase diagram of the classical Kitaev-Heisenberg model. Physical Review B - Condensed Matter and Materials Physics. 88 (2), [024410].
DOI: 10.1103/PhysRevB.88.024410

Choi, E., Chern, G.W., Perkins, N.B. (2013). Helimagnons in a chiral ground state of the pyrochlore antiferromagnets. EPL. 101 (3), [37004].
DOI: 10.1209/0295-5075/101/37004

Perkins, N.B., Chern, G.W., Brenig, W. (2013). Raman scattering in a Heisenberg S=12 antiferromagnet on the anisotropic triangular lattice. Physical Review B - Condensed Matter and Materials Physics. 87 (17), [174423].
DOI: 10.1103/PhysRevB.87.174423

2012

Price, C.C., Perkins, N.B. (2012). Critical properties of the Kitaev-Heisenberg model. Physical review letters. 109 (18), [187201].
DOI: 10.1103/PhysRevLett.109.187201

Stewart, M.K., Brownstead, D., Wang, S., West, K.G., Ramirez, J.G., Qazilbash, M.M., Perkins, N.B., Schuller, I.K., Basov, D.N. (2012). Insulator-to-metal transition and correlated metallic state of V ₂O ₃ investigated by optical spectroscopy. Physical Review B - Condensed Matter and Materials Physics. 85 (20), [205113].
DOI: 10.1103/PhysRevB.85.205113