Gia-Wei Chern

Condensed Matter Physics:

  1. J. Park, B. Le, J. Sklenar, G.-W. Chern, J. D. Watts, and P. Schiffer, Magnetic response of brickwork artificial spin ice,
    Physical Review B 96, 024436 (2017).

  2. G.-W. Chern, K. Barros, C. D. Batista, J. D. Kress, G. Kotliar, Mott transition in a metallic liquid – Gutzwiller molecular dynamics simulations,
    Physical Review Letters 118, 226401 (2017); arXiv:1509.05860 (2015).

  3. G.-W. Chern, Y. Sizyuk, C. Price, N. B. Perkins, Kitaev-Heisenberg model in a magnetic field: order-by-disorder and commensurate-incommensurate transitions,
    Physical Review B 95, 144427 (2017); arXiv:1611.03436 (2016).

  4. B. Le, J. Park, J. Sklenar, G.-W. Chern, C. Nisoli, J. Watts, M. Manno, D. Rench, N. Samarth, C. Leighton, P. Schiffer,
    Understanding magnetotransport signatures in networks of connected permalloy nanowires,
    Physical Review B 95, 060405(R) (2017); arXiv:1701.05618 (2017).

  5. G.-W. Chern, Magnetic avalanches in granular ferromagnets: Thermal activated collective behavior,
    J. Phys.: Condens. Matter 29 044004 (2017) ; arXiv:1611.01098 (2016). Special issue of Journal of Physics: Condensed Matter.

  6. Z. Wang, K. Barros, G.-W. Chern, D. Maslov, C. D. Batista, Resistivity Minimum in Highly Frustrated Itinerant Magnets,
    Physical Review Letters 117, 206601 (2016); arXiv:1604.03620 (2016).

  7. A. M. Samarakoon, T. J. Sato, T. Chen, G.-W. Chern, J. Yang, I. Klich, R. Sinclair, H. Zhou, and S.-H. Lee,
    Aging, memory, and nonhierarchical energy landscape of spin jam,
    Proc. Nat. Acad. Sci. 113, 11806-11810 (2016).

  8. R. Ozawa, S. Hayami, K. Barros, G.-W. Chern Y. Motome, C. D. Batista, Vortex Crystals with Chiral Stripes in Itinerant Magnets,
    Journal of the Physical Society of Japan 85, 103703 (2016); arXiv:1510.06830 (2015).

  9. I. Gilbert, G.-W. Chern, B. Fore, Y. Lao, S. Zhang, C. Nisoli, P. Schiffer, Direct Visualization of Memory Effects in Artificial Spin Ice,
    Physical Review B 92, 104417 (2015); arXiv:1508.06330 (2015).

  10. G.-W. Chern, Novel Magnetic Orders and Ice Phases in Frustrated Kondo-Lattice Model,
    SPIN 5 1540006 (2015). Invited review for Special Issue on Quantum Spin Ice and Liquid in Geometrically Frustrated Magnets.

  11. M. Metcalf, G.-W. Chern, M. Di Ventra, C.-C. Chien, Matter-wave propagation in optical lattices: geometrical and flat-band effects,
    Journal of Physics B: At. Mol. Opt. 49, 075301 (2016); arXiv:1502.04975 (2015).

  12. C. J. Olson Reichhardt, G.-W. Chern, A. Libal, and C. Reichhardt, Disordered artificial spin ices: Avalanches and criticality,
    Journal Applied Physics 117, 172612 (2015). Invited paper.

  13. K. Barros, J. W. F. Venderbos, G.-W. Chern, C. D. Batista, Exotic magnetic orderings in the kagome Kondo-lattice model,
    Physical Review B 90 245119 ; arXiv:1407.5369 (2014).

  14. G.-W. Chern and P. Mellado, Magnetic monopole polarons in spin ice with mixed coordination numbers,
    Europhysics Letters 114, 37004 (2016) ; arXiv:1306.6154 (2013).

  15. G.-W. Chern, A. Rahmani, I. Martin, C. D. Batista, Quantum Hall ice,
    Physical Review B 90 241102 (2014) ; arXiv:1212.3617.

  16. J. Knolle, G.-W. Chern, D. D. L. Kovrizhin, R. Moessner, N. B. Perkins, Raman Scattering Signatures of Kitaev Spin Liquids in A2IrO3 Iridates,
    Physical Review Letters 113, 187201 (2014) ; arXiv:1406.3944 (2014).

  17. S.-Z. Lin, X. Wang, Y. Kamiya, G.-W. Chern, F. Fan, D. Fan, B. Casas, Y. Liu, V. Kiryukhin, W. H. Zurek, C. D. Batista, S.-W. Cheong,
    Topological defects as relics of emergent continuous symmetry and Higgs condensation of disorder in ferroelectrics,
    Nature Physics 10, 970-977 (2014) ; arXiv:1506.05021 (2014).

  18. I. Gilbert, G.-W. Chern, S. Zhang, L. O'Brien, B. Fore, C. Nisoli, and P. Schiffer,
    Emergent ice rule and magnetic charge screening from vertex frustration in articial spin ice,
    Nature Physics 10, 670–675 (2014) .

  19. G.-W. Chern, C.-C. Chien, and M. Di Ventra, Dynamically generated flat-band phases in optical kagome lattices,
    Physical Review A 90, 013609 (2014) ; arXiv:1307.6128.

  20. G.-W. Chern, C. Reichhardt, C. J. Olson Reichhardt, Avalanches and disorder-induced criticality in artificial spin ices,
    New Journal of Physics 16, 063051 (2014) ; arXiv:1401.4805.

  21. S.-Z. Lin, Y. Kamiya, G.-W. Chern, C. D. Batista, Reentrant Berezinskii-Kosterlitz-Thouless Transition in a Triangular Ising Thin Film,
    Physical Review Letters 112, 155702 (2014) ; arXiv:1310.3468.

  22. E. D. Mun, G.-W. Chern, V. Pardo, F. Rivadulla, V. S. Zapf, C. D. Batista, Magnetic field induced transition in the multiferroic spinel CdV2O4,
    Physical Review Letters 112, 017207 (2014) ; arXiv:1307.4775.

  23. G.-W. Chern, C. Reichhardt, C. Nisoli, Realizing three-dimensional artificial spin ice by stacking planar nano-arrays,
    Applied Physics Letters 104, 013101 (2014) ; arXiv:1311.1584.

  24. A. Rahmani and G.-W. Chern, Universal Renyi mutual information in classical systems: the case of kagome ice,
    Physical Review B 88, 054426 (2013); arXiv:1304.4160.

  25. S. Zhang, I. Gilbert, C. Nisoli, G.-W. Chern, M. J. Erickson, L. O'Brien, C. Leighton, P. E. Lammert, V. H. Crespi, and P. Schiffer,
    Crystallites of magnetic charges in artificial spin ice,
    Nature 500, p.553-557 (2013) .

  26. G.-W. Chern, C. Reichhardt, C. J. Olson Reichhardt, Frustrated colloidal ordering and fully packed loops in arrays of optical traps,
    Physical Review E 87, 062305 (2013) ; arXiv:1302.2979.

  27. E. Choi, G.-W. Chern, N. Perkins, Chiral magnetism and helimagnons in a pyrochlore antiferromagnet,
    Physical Review B 87, 054418 (2013) ; arXiv:1301.5958.

  28. N. Perkins, G.-W. Chern, W. Brenig, Raman scattering in a Heisenberg S=1/2 antiferromagnet on the anisotropic triangular lattice,
    Physical Review B 87, 174423 (2013) ; arXiv:1212.2286.

  29. G.-W. Chern, M. J. Morrison, C. Nisoli, Degeneracy and criticality from emergent frustration in artificial spin ice,
    Physical Review Letters 111, 177201 (2013) ; arXiv:1210.8377.

  30. G.-W. Chern, S. Maiti, R. M. Fernandes, Peter Wolfle, Electronic transport in the Coulomb phase of the pyrochlore spin ice,
    Physical Review Letters 110, 146602 (2013) ; arXiv:1210.3289.

  31. G.-W. Chern, R. Moessner, Dipolar order by disorder in the classical Heisenberg antiferromagnet on the kagome lattice,
    Physical Review Letters 110, 077201 (2013) ; arXiv:1207.4752.

  32. M. M. Altarawneh, G.-W. Chern, N. Harrison, C. D. Batista, A. Uchida, M. Jaime, D. G. Rickel, S. A. Crooker, C. H. Mielke, J. B. Betts, J. F. Mitchell, M. J. R. Hoch,
    A cascade of magnetic field induced spin transitions in LaCoO3,
    Physical Review Letters 109, 037201 (2012) ; arXiv:1206.2603.

  33. E. Choi, G.-W. Chern, N. B. Perkins, Helimagnons in a chiral ground state of pyrochlore antiferromagnets,
    Europhysics Letters 101, 37004 (2013) ; arXiv:1205.4225.

  34. Y. Kato, G.-W. Chern, K. A. Al-Hassanieh, N. B. Perkins, C. D. Batista, Orbital disorder induced by charge fluctuations in vanadium spinels,
    Physical Review Letters 108, 247215 (2012) ; arXiv:1205.1081.

  35. G.-W. Chern, Congjun Wu, Four-coloring model and frustrated superfluidity in the diamond lattice,
    Physical Review Letters 112, 020601 (2014) ; arXiv:1204.6019.

  36. G.-W. Chern, C. D. Batista, Spontaneous quantum Hall effect via a thermally induced quadratic Fermi point,
    Physical Review Letters 109, 156801 (2012) ; arXiv:1204.5737.

  37. G.-W. Chern, R. M. Fernandes, R. Nandkishore, A. V. Chubukov, Broken translational symmetry in an emergent paramagnetic phase of graphene,
    Physical Review B 86, 115443 (2012) ; arXiv:1203.5776.

  38. R. Nandkishore, G.-W. Chern, A. V. Chubukov, Itinerant half-metal spin-density-wave state on the hexagonal lattice,
    Physical Review Letters 108, 227204 (2012) ; arXiv:1202.2127.

  39. G.-W. Chern and O. Tchernyshyov, Magnetic charge and ordering in kagome spin ice,
    Phil. Trans. Roy. Soc. A 370, 5718 (2012) ; arXiv:1109.0275.

  40. G.-W. Chern and Congjun Wu, The orbital analog of ice: p-band Mott-insulators on the diamond lattice,
    Physical Review E 84 , 061127 (2011) ; arXiv:1104.1614.

  41. G.-W. Chern and C. D. Batista, Spin superstructure and noncoplanar ordering in metallic pyrochlore magnets with degenerate orbitals,
    Physical Review Letters 107, 186403 (2011)
    ; arXiv:1108.3066.

  42. A. Nersesyan, G.-W. Chern, and N. B. Perkins, Quantum phase transitions in a strongly entangled spin-orbital chain: A field-theoretical approach,
    Physical Review B 83, 205132 (2011)
    ; arXiv:1101.1268.

  43. G.-W. Chern, P. Mellado, and O. Tchernyshyov, Two-stage ordering of spins in a dipolar spin ice on the kagome lattice,
    Physical Review Letters 106, 207202 (2011)
    ; arXiv:0906.4781.

  44. G.-W. Chern, Pyrochlore antiferromagnet with antisymmetric exchange interactions: critical behavior and order from disorder, arXiv:1008.3038.

  45. G.-W. Chern, Noncoplanar magnetic ordering driven by itinerant electrons on the pyrochlore lattice,
    Physical Review Letters 105, 226403 (2010); arXiv:1007.5521.

  46. G.-W. Chern, N. B. Perkins, G. I. Japaridze, Quantum criticality of vanadium chains with strong relativistic spin-orbit interaction,
    Physical Review B 82, 172408 (2010); arXiv:1007.3472.

  47. D. Zhou, G.-W. Chern, J. Fei, R. Joynt, Topology of entanglement evolution of two qubits,
    International Journal of Modern Physics B 26, 1250054 (2012) ; arXiv:1007.1749.

  48. G.-W. Chern, D. Clarke, H. Youk, O. Tchernyshyov, Halfvortices in flat nanomagnets,
    in Proceedings of Les Houches Summer School on ''Quantum Magnetism,''
    NATO Science for Peace and Security Series B: Physics and Biophysics, p. 35-48 (2008)
    , arXiv:1007.2158.

  49. G.-W. Chern, N. B. Perkins, Z. Hao, Quantum 120o model on pyrochlore lattice: orbital ordering in MnV2O4,
    Physical Review B 81, 125127 (2010)
    ; arXiv:0912.5171.

  50. G.-W. Chern, Three-dimensional topological phases in a layered honeycomb spin-orbital model,
    Physical Review B 81, 125134 (2010); arXiv:0912.4020.

  51. O. Tchernyshyov and G.-W. Chern, Spin-lattice coupling in antiferromagnetic spinels,
    in ''Introduction to Frustrated Magnetism'' edited by C. Lacroix, P. Mendels and F. Mila,
    Springer Series in Solid-State Sciences, 2011, vol. 164, p. 269-291 (2011); arXiv:0907.1693.

  52. G.-W. Chern, N. B. Perkins, Model for frustrated spin-orbital chains: application to CaV2O4,
    Physical Review B 80, 220405 (2009)
    ; arXiv:0907.3006.

  53. G.-W. Chern, N. B. Perkins, Large-J approach to strongly coupled spin-orbital systems,
    Physical Review B 80, 180409 (2009)
    ; arXiv:0905.4728.

  54. D. Clarke, O. A. Tretiakov, G.-W. Chern, Ya. B. Bazaliy, and O. Tchernyshyov,
    Dynamics of a vortex domain wall in a magnetic nanostrip: an application of the collective coordinate approach,
    Physical Review B 78, 134412 (2008)
    ; arXiv:0806.3283.

  55. D. Clarke, G.-W. Chern, O. A. Tretiakov, and O. Tchernyshyov, Dynamics of a domain wall in a magnetic nanostrip: a toy model,
    Appendix of Physical Review B 78 , 134412 (2008) ; arXiv:0705.4465.

  56. G.-W. Chern, R. Moessner, O. Tchernyshyov, Partial order from disorder in a classical pyrochlore antiferromagnet,
    Physical Review B 78, 144418 (2008)
    ; arXiv:0803.2332.

  57. O. A. Tretiakov, D. Clarke, G.-W. Chern, Ya. B. Bazaliy, and O. Tchernyshyov, Dynamics of domain walls in magnetic nanostrips,
    Physical Review Letters 100, 127204 (2008)
    ; arXiv:0705.4463.

  58. G.-W. Chern, C. J. Fennie, and O. Tchernyshyov, Broken parity and a chiral ground state in the frustrated magnet CdCr2O4,
    Physical Review B 74, 060405(R) (2006)
    ; cond-mat/0606039.

  59. H. Youk, G.-W. Chern, K. Merit, B. Oppenheimer, and O. Tchernyshyov, Composite domain walls in flat nanomagnets: the magnetostatic limit,
    Journal Applied Physics 99, 08B101 (2006); cond-mat/0508741.

  60. G.-W. Chern, H. Youk, and O. Tchernyshyov, Topological defects in flat nanomagnets: the magnetostatic limit,
    Journal Applied Physics 99, 08Q505 (2006)
    ; cond-mat/0508740.

  61. F. Q. Zhu, G.-W. Chern, O. Tchernyshyov, X. C. Zhu, J. G. Zhu, and C. L. Chien,
    Magnetic bistability and controllable reversal of asymmetric ferromagnetic nanorings,
    Physical Review Letters 96, 027205 (2006)
    ; cond-mat/0508249.

  62. O. Tchernyshyov and G.-W. Chern, Fractional vortices and composite domain walls in flat nanomagnets,
    Physical Review Letters 95, 197204 (2005)
    ; cond-mat/0506744.


Optics and Ultrafast Science:

  1. G.-W. Chern and A. Saxena, PT-symmetric phase in kagome photonic lattices,
    Optics Letters 40, pp.5806-5809 (2015); arXiv:1509.05813.

  2. Y.-C. Wen, G.-W. Chern, K.-H. Lin, J. J. Yeh, and C.-K. Sun, Femtosecond optical excitation of coherent acoustic phonons in a piezoelectric p-n junction,
    Physical Review B 84, 205315 (2011) .

  3. K.-H. Lin, G.-W. Chern, C.-T. Yu, T.-M. Liu, C.-C. Pan, G.-T. Chen, J.-I. Chyi, S.-W. Huang, P.-C. Li, C.-K. Sun, Optical piezoelectric transducer for nano-ultrasonics,
    IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 52, 1404 (2005) .

  4. K.-H. Lin, G.-W. Chern, Y.-K. Huang, C.-K. Sun, Terahertz electron distribution modulation in piezoelectric InxGa1-xN/GaN multiple quantum wells using coherent acoustic nanowaves,
    Physical Review B 70, 073307 (2004) .

  5. G.-W. Chern, K.-H. Lin, C.-K. Sun, Transmission of light through quantum heterostructures modulated by coherent acoustic phonons,
    Journal of Applied Physics 95, 1114 (2004) .

  6. G.-W. Chern, C.-K. Sun, G. Sanders, C. J. Stanton, Generation of coherent acoustic phonons in nitride-based semiconductor nanostructures ,
    in Ultrafast Dynamical Processes in Semiconductors, edited by K.-T. Tsen,
    Springer Series: Topics in Applied Physics, vol. 92, p. 2083 (2004).

  7. G.-W. Chern, C.-K. Sun, Y.-K. Huang, K.-H. Lin, Generation of coherent acoustic phonons in piezoelectric semiconductor heterostructures,
    Proceedings of SPIE 4992, 226 (2003) ; cond-mat/0301031 .

  8. G.-W. Chern, K.-H. Lin, Y.-K. Huang, C.-K. Sun, Spectral analysis of high harmonic coherent acoustic phonons in piezoelectric semiconductor multiple quantum wells,
    Physical Review B 67, 121303(R) (2003) .

  9. S.-W. Chu, S.-Y. Chen, G.-W. Chern, T.-H. Tsai, Y.-C. Chen, B.-L. Lin, C.-K. Sun,
    Studies of χ(2)(3) tensors in submicron-scaled bio-tissues by polarization harmonic generation microscopy,
    Biophysical Journal 86, 3914 (2004) .

  10. C. J. Stanton, G. D. Sanders, R. Liu, G. W. Chern, C. -K. Sun, J. S. Yahng, Y. D. Jho, J. Y. Sohn, E. Oh, D. S. Kim,
    Coherent phonons, nanoseismology and THz radiation in InGaN/GaN heterostructures,
    Superlattices and Microstructures 34, 525 (2003) .

  11. C.-K. Sun, G.-W. Chern, K.-H. Lin, Y.-K. Huang, Observation of Large Acoustic Gain in Coherent Acoustic Phonon Oscillators,
    Chinese Journal of Physics 41, p.652 (2003) .

  12. T.-M. Liu, Y.-C. Huang, G.-W. Chern, K.-H. Lin, C.-J. Lee, Y.-C. Hung, C.-K. Sun,
    Characterization of ultrashort optical pulses with third-harmonic-generation based triple autocorrelation,
    IEEE Journal of Quantum Electronics 38, 1529-1535 (2002) .

  13. T.-M. Liu, Y.-C. Huang, G.-W. Chern, K.-H. Lin, C.-J. Lee, Y.-C. Hung, C.-K. Sun, Triple-optical autocorrelation for direct optical pulse-shape measurement,
    Applied Physics Letters 81, 1402-1404 (2002) .

  14. K.-H. Lin, G.-W. Chern, Y.-C. Huang, C.-K. Sun, Observation of huge nonlinear absorption enhancement near exciton resonance in GaN,
    Applied Physics Letters 83, 3087 (2003) .

  15. K.-H. Lin, G.-W. Chern, S.-W. Chu, C.-K. Sun, H. Xing, Y. Smorchkova, S. Keller, U. Mishra, S. P. DenBaars, Ultrashort hole capture time in Mg-doped GaN thin films,
    Applied Physics Letters 81, 3975-3977 (2002) .

  16. Y.-C. Huang, G.-W. Chern, K.-H. Lin, J.-C. Liang, C.-K. Sun, C.-C. Hsu, S. Keller, S. P. DenBaars, Femtosecond dynamics of exciton bleaching in bulk GaN at room temperature,
    Applied Physics Letters 81, 85-87 (2002) .

  17. Y.-K. Huang, G.-W. Chern, C.-K. Sun, Y. Smorchkova, S. Keller, U. Mishra, S. P. DenBaars, Generation of coherent acoustic phonons in strained GaN thin films,
    Applied Physics Letters 79, 3361-3363 (2002) .

Optoelectronics and Photonics:

  1. W.-Y. Su, G.-W. Chern, L. A. Wang, Analysis of cladding-mode couplings for a lensed fiber integrated with a long-period fiber grating by use of the beam-propagation method,
    Applied Optics 41, 6576-6584 (2002) .

  2. C.-Y. Lin, L. A. Wang, G.-W. Chern, Corrugated long-period fiber gratings as strain, torsion, and bending sensors,
    Journal of Lightwave Technology 19, 1159-1168 (2001) .

  3. L. A. Wang, C.-Y. Lin, and G.-W. Chern, A torsion sensor made of a corrugated long period fibre grating,
    Measurement Science and Technology 12, 793-799 (2001) .

  4. C.-Y. Lin, G.-W. Chern, L. A. Wang, Periodic corrugated structure for forming sampled fiber Bragg grating and long-period fiber grating with tunable coupling strength,
    Journal of Lightwave Technology 19, 1212-1220 (2001) .

  5. G.-W. Chern, J.-F. Chang, L. A. Wang, Modeling of nonlinear pulse propagation in periodic and quasi-periodic binary long-period fiber gratigns,
    Journal of Optical Society of America B 19, 1497-1508 (2002) .

  6. G.-W. Chern, L. A. Wang, Design of binary long-period fiber grating filters by the inverse-scattering method with genetic algorithm optimization,
    Journal of Optical Society of America A 19, 772-780 (2002) .

  7. G.-W. Chern, L. A. Wang, C.-Y. Lin, Transfer-matrix approach based on modal analysis for modeling corrugated long-period fiber gratings,
    Applied Optics 40, 4476-4486 (2001) .

  8. G.-W. Chern, L. A. Wang, Analysis and design of almost-periodic vertical-grating-assisted codirectional coupler filters with nonuniform duty ratios,
    Applied Optics 39, 4629-4637 (2000) .

  9. G.-W. Chern, L. A. Wang, Transfer-matrix method based on perturbation expansion for periodic and quasi-periodic binary long-period gratings,
    Journal of Optical Society of America A 16, 2675-2689 (1999) .

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