Welcome, and thank you for stopping by.

Daoxin Yao

Ph.D. received in Physics (April 2007)
Condensed Matter Theory
Department of Physics
Boston University
590 Commonwealth Ave
Boston, MA 02215
Tel: 765-494-5547 (O)
Email: yaodx at physics.bu.edu

Photo Album

 

ˇˇ

Research

I am interested in Strongly correlated systems, Magnetism, Computational physics, Quantum phase transitions, Graphene, Quantum optics and Quantum information. More specifically, I study spin and charge orderings in cuprate superconductors, iron-based superconductors, nickelates and other layered perovskites. Using Quantum Monte Carlo methods and exact diagonalization, I investigate quantum phase transitions and critical phenomena. I also study noval quantum phase transitions which do not belong to conventional theories. Graphene and Frustrated spin systems are my favorite research fields too. During my MA+BA study, I worked on quantum solvable models, geometric phase, wave-packet collapse in the measurements, quantum optics and lattice thermodynamics. My PhD advisor was Prof. David K. Campbell and I have worked with Anders W. Sandvik, Erica W. Carlson, Antonio H. Castro Neto and Valeri Kotov.

Education

Work Experience

Associations

  • Sigma Xi, the Scientific Research Society
  • Referee for Physical Review Letters, Physical Review B and Physics Letters
  • Member of American Physical Society

Publications:

    22. Valeri N. Kotov, Dao-Xin Yao, A. H. Castro Neto, D. K. Campbell, ˇ°Unconventional Quantum Phase Transition in a Ring-Exchange Antiferromagnet,ˇ± Physical Review B 80, 174403 (2009)

    21. Dao-Xin Yao and E. W. Carlson, ˇ°Magnetic Excitations of Undoped Oxypnictides,ˇ± Frontiers of Physics in China (2009): Iron-based Superconductors.

    20. S. Li, Dao-Xin Yao, Y. Qiu, H. J. Kang, E. W. Carlson, J. P. Hu, G. F. Chen, N. L. Wang, Pengcheng Dai, ˇ°Low-energy Ce spin excitations in CeFeAsO and CeFeAsF,ˇ± Frontiers of Physics in China (2009): Iron-based Superconductors.

    19. P. G. Freeman, S. M. Hayden, C. D. Frost, M. Enderle, D. X. Yao, E. W. Carlson, D. Prabhakaran, and A. T. Boothroyd, ˇ°Inward dispersion of the spin excitation spectrum of stripe-ordered La2NiO4,ˇ± Physical Review B 80, 144523 (2009).

    18. J. Zhao, D. T. Adroja , D. X. Yao, R. Bewley, S. Li, X. F. Wang, G. Wu, X. H. Chen, J. P. Hu, and P. Dai, ˇ°Spin Waves and Magnetic Exchange Interactions in CaFe2As2,ˇ± Nature Phyics 5, 555 (2009).

    17. W.-F. Tsai, D. X. Yao, B. A. Bernevig and J. P. Hu, ˇ°Novel properties in Josephson junctions involving the cos(kx)cos(ky)-pairing state in iron-pnictides,ˇ±Physical Review B 80, 012511 (2009), selected for the August 1, 2009 issue of Virtual Journal of Applications of Superconductivity.

    16. J. Zhao, D. X. Yao, S. Li, T. Hong, Y. Chen, S. Chang, W. RatcliffII, J. W. Lynn, H. A. Mook, G. F. Chen, J. L. Luo, N. L. Wang, E. W. Carlson, J. P. Hu and Pengcheng Dai, ˇ°Low energy spin waves and magnetic interactions in SrFe2As2,ˇ± Physical Review Letters 101, 167203 (2008), selected for the October 15, 2008 issue of Virtual Journal of Applications of Superconductivity.

    15. D. X. Yao and E. W. Carlson, ˇ°Magnetic Excitations in the High Tc Iron Pnictides,ˇ± Physical Review B 78, 052507 (2008), selected for the September 1, 2008 issue of Virtual Journal of Applications of Superconductivity.

    14. D. X. Yao, Y. L. Loh, E. W. Carlson and M. Ma, ˇ°XXZ and Ising Spins on the Triangular Kagome Lattice,ˇ± Physical Review B 78, 024428 (2008).

    13. Y. L. Loh, D. X. Yao and E. W. Carlson, ˇ°Dimers on the Triangular Kagome Lattice,ˇ± Physical Review B 78, 224410 (2008).

    12. Y. L. Loh, D. X. Yao, and E. W. Carlson, ˇ°Thermodynamics of Ising spins on the triangular kagome lattice: Exact analytic method and Monte Carlo simulations,ˇ± Physical Review B 77, 134402 (2008).  

    11. Y. J. Jiang, D. X. Yao, E. W. Carlson, H. D. Chen and J. P. Hu, ˇ°d+id'-wave Superconducting States in Graphene,ˇ± Physical Review B 77, 235420 (2008).

    10. D. X. Yao and E. W. Carlson, ˇ°Incompatibility of modulated checkerboard patterns with the neutron scattering resonance peak in cuprate superconductors,ˇ± Physical Review B 77, 024503 (2008), arXiv:0708.1966, Selected for the Jan. 15, 2008 issue of the Virtual Journal of Applications of Superconductivity.

    9. V. N. Kotov, D. X. Yao, A. H. Castro Neto, D. K. Campbell,ˇ°Quantum phase transitions beyond the dilue Bose gas limit,ˇ± Proceedings of SCES'07, Houston, arXiv:0704.2439.


    8. D. X. Yao and E. W. Carlson, ˇ°Spin-wave Dispersion in Half-doped LaSrNiO,ˇ± Physical Review B 75, 012414 (2007).

    7. D. X. Yao, A. W. Sandvik, ˇ°Universal Scaling of the Neel Temperature of Near-Quantum-Critical Quasi-Two-Dimensional Heisenberg Antiferromagnets,ˇ± Physical Review B 75, 052411 (2007).

    6. D. X. Yao, E. W. Carlson, D. K. Campbell, ˇ°Magnetic Excitations of Stripes and Checkerboards in the Cuprates,ˇ± Physical Review B 73, 224525 (2006).

    5. D. X. Yao, E. W. Carlson, D. K. Campbell, ˇ°Magnetic Excitations of Stripes Near a Quantum Critical Point,ˇ± Physical Review Letters 97, 017003 (2006).

    4. E. W. Carlson, D. X. Yao, D. K. Campbell, ˇ°Spin Waves in Striped Phases,ˇ± Physical Review B 70, 064505 (2004).

    3. Jing-Bo Xu and Dao-Xin Yao,ˇ°Geometric Phases and Probabilities for an Alkali Atom in a Strong Magnetic Field,ˇ±Physica Scripta. 59. 411 (1999).

    2. Dao-Xin Yao, Jingbo Xu, ˇ°The Spin Evolution of the Neutral Particle in a Time-dependent Magnetic field and Geometric Phases,ˇ± Acta Sinica Quantum Optica.3. 226 (1997).

    1. Jingbo Xu, Dao-Xin Yao, Shoufu Cai, ˇ°Time Evolution of the Alkali Atom in a Strong Magnetic Field and Aharonov-Anandan Phase,ˇ± Chinese Journal of Atom and Molecular Physics. 2. 280 (1995).

Selected Presentations:

    20. Magnetic Excitations in the Iron-based Superconductors, 2008 APS March meeting, Pittsburgh, Mar. 17, 2009.

    19. Frustrated Magnetism on the Triangular Kagome Lattice, presented in the 2008 Boulder Summer School in Condensed Matter and Materials Physics.

    18. Dimerized Bond-Disordered Quantum Spin Models and Harris Criterion, poster, Cifar-PITP International Summer School on Numerical Methods for Correlated Systems in Condensed Matter, Sherbrooke, Qu¨¦bec, Canada, May 26 to June 6, 2008.

    17. d+id'-wave Superconducting States in Graphene and Andreev Reflection, APS March Meeting, New Orleans, Mar. 12, 2008.

    16. Dimerized Bond-Disordered Quantum Spin Models and Harris Criterion, APS March Meeting, New Orleans , Mar. 13, 2008.

    15. d+id'-wave Superconducting States in Graphene, poster, International Workshop on Conductor-Insulator Quantum Phase Transitions (National High Magnetic Field Laboratory), Ohio State University, Jan. 9, 2008.

    14. Magnetic Excitations of Stripes, SSE QMC, Quasi-Two-Dimensionalspin Systems, Ring Exchange, Special condensed matter seminar, University of Cincinnatti, Nov. 1, 2007.

    13. Magnetic Excitations of Stripes, Quasi-Two-Dimensionalspin Systems, Harris Criteria, Ring Exchange, Ohio University, Oct.18, 2007.

    12. Quasi-Two-Dimensional Spin Systems, Ring Exchange, and Deconfined Quantum Criticality, Purdue University, Aug. 24, 2007.

    11. Magnetic Excitations of Stripes and Checkerboards in the Cuprates and Nickelates, Invited Talk, "Strong Correlations in Low Dimensional Transport and Dynamics" (by Brookhaven National Laboratory) at Mautauk of Long Island in New York, Sept.4, 2007.

    10. Quantum Monte Carlo Study of Quasi-Two-Dimensional Spin Systems, Poster, 2007 summer school of Quantum Monte Carlo at UIUC, July 11, 2007.

    9. Spin Wave Spectra of Stripes and Checkerboards, Science & Engineering Research Symposium, Boston University, Apr. 2, 2007.

    8. Spin and Charge Excitations in Checkerboards based on a Superstructure, APS March Meeting, Denver, Mar. 8, 2007 7.

    7. Quantum PhaseTransition of Heisenberg Antiferromagnet with Four-Spin Ring Exchange, APS March Meeting, Denver, Mar. 7, 2007.

    6. Universal scaling of the Neel temperature of near-quantum-critical quasi-two-dimensional Heisenberg antiferromagnets, poster, International Workshop on "Density Functional Theory Meets Strong Correlation" (by Brookhaven National Laboratory), in Long Island of New York, Sept. 5-8, 2006.

    5. Bond-Diluted Heisenberg Spin Systems on Coupled ladders, Focus Session: MAG.THY III: Oxides and Phase Transitions, talked at the APS March meeting in Baltimore, Mar. 15, 2006.

    4. Stripes and Magnetic excitations, presented at Harvard University, Apr. 12, 2005.

    3. Magnetic Excitations of Stripes, presented at the March meeting of American Physical Society in Los Angeles, D41, Mar 21, 2005.

    2. Spin Waves in Stripe Ordered Systems, Erica W. Carlson, Daoxin Yao and David K. Campbell, March meeting of American Physical Society in Montreal, N26, 2004.

    1. Monte Carlo Studies of Ising spins on Triangular Kagome Lattice (TKL), Daoxin Yao, Takeo Takagi and Mamura Mekata, presented in the Meeting of the Physical Society of Japan at Kobe, 1997. (No 52, 723 (1997))

Attended Workshops/Summer Schools

 


Favourite Sites

Physics Journal CompPhy Links Mathematics Physics study ZIMP
English Tennis Friend's link Computer Lafayette

Last modified: Jan,2009