Gia-Wei Chern

Condensed Matter Physics:

  1. B. S. Shivaram, J. Luo, G.-W. Chern, D. Phelan, R. Fittipaldi, A. Vecchione, Nonlinear Pauli Susceptibilities in Sr3Ru2O7 and Universal Features of Itinerant Metamagnetism,
    arXiv:1712.00113 (2017).

  2. Z. Wang, G.-W. Chern, C. D. Batista, and K. Barros, Gradient-based stochastic estimation of the density matrix,
    arXiv:1711.10570 (2017).

  3. G.-W. Chern, Dynamic inhomogeneities and phase separation after quantum quenches in strongly correlated systems,
    arXiv:1711.07972 (2017).

  4. Y. Kamiya, A. Furusaki, J. C. Y. Teo, and G.-W. Chern, Majorana Stripe Order on the Surface of a Three-Dimensional Topological Insulator,
    arXiv:1711.03632 (2017).

  5. G.-W. Chern, Theory of magnetotransport in artificial kagome spin ice,
    Physical Review Applied 8,064006 (2017); arXiv:1711.01315 (2017).

  6. J. Yang, J. Colen, J. Liu, M. C. Nguyen, G.-W. Chern, D. Louca, Elastic and electronic tuning of magnetoresistance in MoTe2,
    arXiv:1710.02589 (2017).

  7. G.-W. Chern, K. Barros, Z. Wang, H. Suwa, C. D. Batista, Semiclassical dynamics of spin density waves,
    arXiv:1708.08050 (2017).

  8. A. M. Samarakoon, M. Takahashi, D. Zhang, J. Yang, N. Katayama, R. Sinclair, H. D. Zhou, S. O. Diallo, G. Ehlers, D. A. Tennant, S. Wakimoto, K. Yamada, G.-W. Chern, T. J. Sato, S.-H. Lee, Scaling of Memories and Crossover in Glassy Magnets,
    Scientific Reports 7, 12053 (2017). arXiv:1708.07974 (2017).

  9. 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).

  10. 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).

  11. 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).

  12. 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).

  13. 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.

  14. 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).

  15. 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).

  16. 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).

  17. 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).

  18. 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.

  19. 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).

  20. 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.

  21. 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).

  22. 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).

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

  24. 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).

  25. 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).

  26. 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) .

  27. 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.

  28. 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.

  29. 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.

  30. 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.

  31. 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.

  32. 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.

  33. 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) .

  34. 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.

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

  36. 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.

  37. 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.

  38. 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.

  39. 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.

  40. 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.

  41. 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.

  42. 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.

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

  44. 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.

  45. 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.

  46. 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.

  47. 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.

  48. 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.

  49. 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.

  50. 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.

  51. 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.

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

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

  54. 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.

  55. 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.

  56. 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.

  57. 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.

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

  59. 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.

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

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

  62. 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.

  63. 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.

  64. 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.

  65. 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.

  66. 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.

  67. 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.

  68. 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.

  69. 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.

  70. 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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