Biography:Pengcheng Dai

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Short description: Chinese American experimental physicist
Pengcheng Dai
Born
China
NationalityChinese American
OccupationExperimental physicist, and academic
Academic background
EducationB.S. in physics
Ph.D. in experimental physics
Alma materZhengzhou University
University of Missouri, Columbia, Mo
Thesis (1993)
Academic work
InstitutionsRice University

Pengcheng Dai is a Chinese American experimental physicist and academic. He is the Sam and Helen Worden Professor of Physics in the Department of Physics and Astronomy at Rice University.[1]

Dai is most known for his research in the field of unconventional superconductivity and has contributed to comprehending the role of magnetic excitations in unconventional super conductors including copper, iron, and heavy fermion unconventional superconductors. He co-edited the book, Iron-based Superconductors: Materials, Properties and Mechanisms, and is the recipient of Heike Kamerlingh, Onnes Prize.[2] He also made contributions to topological spin excitations in honeycomb/kogome lattice magnets and studied spin dynamics in colossal magnetoresistance manganites.

Dai is a Fellow of the American Physical Society (APS),[3] American Association for the Advancement of Science (AAAS),[4] and Neutron Scattering Society of America (NSSA)[5] and holds an appointment as a Divisional Associate Editor at Physical Review Letters.[6]

Education

Dai received his baccalaureate degree in physics from Zhengzhou University in China . He then studied at the University of Missouri in Columbia, where he obtained his Ph.D. in Experimental Condensed Matter Physics. Later, he completed his post-doc at Oak Ridge National Laboratory (ORNL) working with Herbert A. Mook[7] and became the Staff Scientist there.[8]

Career

After serving in the Center for Neutron Scattering at ORNL as a Staff Scientist, he resumed his academic career in 2001 and was appointed as an associate professor of physics at the University of Tennessee and ORNL as a Joint Faculty. He obtained his tenure in 2003 and was then promoted to Professor in 2006. He became The Joint Institute for Advanced Materials Chair of Excellent at The University of Tennessee in 2008 and remained in that position until 2013 when he moved to Rice University. Having initially joined Rice University as a professor of physics, he now holds an appointment as the Sam and Helen Worden Professor of Physics there.[9]

Research

Dai's research primarily focuses on experimental condensed matter physics, using neutrons as a probe to study correlated electron materials. His works include direct evidence for magnetism and superconductivity coupling in unconventional superconductors, topological spin excitations in different classes of quantum materials and discoveries in the magnetic properties of cuprate and iron-based superconductors.[10]

Dai established 'Pengcheng Dai's group' at Rice University's Physics Department, which conducts research on condensed matter physics and also founded a materials growth laboratory that produces high-quality single crystals of correlated electron materials.[11]

Cuprate superconductors

In 1998, he demonstrated the incommensurate spin fluctuations in the YBa2Cu3O6+x (YBCO) system,[12] observed the resonance in underdoped YBCO and studied the effects of magnetic field on the resonance,[13] and characterized the overall energy/wave vector dependence of the magnetic excitations in YBCO.[14] Later, in 2000, he discovered one-dimensional nature of spin fluctuations.[15] He has also worked on electron-doped cuprates. He clarified the microscopic origin of the annealing process, studied the electron-magnetic excitation coupling and discovered resonance in the electron-doped high-transition-temperature superconductor Pr0.88LaCe0.12CuO4-δ.[16]

Iron-based superconductors

Over the past 15 years, along with his research group, Dai has made contributions to describe the interplay between magnetism and superconductivity and has published more than 150 papers in the field. In 2008, they determined the antiferromagnetic structure in the parent compound of one class of iron-based superconductors.[17] Afterwards, he mapped out the electronic phase diagram of these materials[18] and carried out the first spin wave measurements to determine the effective Heisenberg Hamiltonian for the parent compounds of three families of iron-based superconductors.[19] His research in 2014 led to the discovery of the first evidence for a spin nematic phase, accomplished by analyzing the evolution of overall spin excitations across the nematic phase transition temperature determined by transport measurements.[20][21] His group also developed a cleaver detwinned device that allowed systematic measurements of magnetism in iron-based superconductors in the intrinsically detwinned state.[22][23][24]

Fermion superconductors

In addition to cuprate and iron-based superconductors, Dai has worked on comprehending the interplay between magnetism and superconductivity in heavy fermion superconductors. This includes the discovery of upward dispersion in neutron resonance of CeCoIn5,[25][26] mapping of overall spin excitations in CeCu2Si2,[27] and antiferromagnetic spin fluctuations are coupled with superconductivity of spin-triplet candidate UTe2.[28] His discovery of an antiferromagnetic neutron spin resonance in spin-triplet superconductor candidate UTe2 is particularly important because it suggests that superconductivity in spin-triplet superconductors may also be driven by antiferromagnetic spin fluctuations instead of ferromagnetic spin fluctuations[29]

Awards and honors

  • 2008 – Chair of Excellence, Joint Institute of Advanced Materials (JIAM)
  • 2016 – Sustained Research Prize, Neutron Scattering Society of America (NSSA)[30]
  • 2022 – Onnes Prize, Heike Kamerlingh[2]

Bibliography

Books

  • Iron-based Superconductors: Materials, Properties and Mechanisms (2012) ISBN:978-9814303224

Selected articles

  • Dai, P., Mook, H. A., Hayden, S. M., Aeppli, G., Perring, T. G., Hunt, R. D., & Doğan, F. (1999). The magnetic excitation spectrum and thermodynamics of high-T c superconductors. Science, 284(5418), 1344–1347.
  • Dai, P., Mook, H. A., Aeppli, G., Hayden, S. M., & Doğan, F. (2000). Resonance as a measure of pairing correlations in the high-T c superconductor YBa2Cu3O6. 6. Nature, 406(6799), 965–968.
  • Dai, P. (2015). Antiferromagnetic order and spin dynamics in iron-based superconductors. Reviews of Modern Physics, 87(3), 855.
  • Chen, T., Chen, Y., Kreisel, A., Lu, X., Schneidewind, A., Qiu, Y., ... & Dai, P. (2019). Anisotropic spin fluctuations in detwinned FeSe. Nature materials, 18(7), 709–716.
  • Duan, C., Baumbach, R. E., Podlesnyak, A., Deng, Y., Moir, C., Breindel, A. J., ... & Dai, P. (2021). Resonance from antiferromagnetic spin fluctuations for superconductivity in UTe2. Nature, 600(7890), 636–640.
  • Teng, X., Chen, L., Ye, F., Rosenberg, E., Liu, Z., Yin, J. X., ... & Dai, P. (2022). Discovery of charge density wave in a kagome lattice antiferromagnet. Nature, 609(7927), 490–495.

References

  1. ↑ "Pengcheng Dai | Faculty | The People of Rice | Rice University". https://profiles.rice.edu/faculty/pengcheng-dai. 
  2. ↑ 2.0 2.1 "The Heike Kamerlingh Onnes Prize". https://kamerlingh-onnes-prize.ch/. 
  3. ↑ "APS Fellow Archive". http://www.aps.org/programs/honors/fellowships/archive-all.cfm. 
  4. ↑ "Dr. Pengcheng Dai Elected AAAS Fellow". http://www.phys.utk.edu/news/archives/2012/dai-aaas.pdf. 
  5. ↑ "NSSA Fellows". https://neutronscattering.org/prizes/nssa-fellows/. 
  6. ↑ "PRL Editorial Team". September 20, 2022. https://journals.aps.org/prl/staff. 
  7. ↑ "Herb Mook: Good taste in problems". https://www.ornl.gov/news/herb-mook-good-taste-problems. 
  8. ↑ "Pengcheng Dai | Rice Center for Quantum Materials | Rice University". https://rcqm.rice.edu/who-we-are/pengcheng-dai. 
  9. ↑ "University of Chinese Academy of Sciences". https://people.ucas.ac.cn/~daip?language=en. 
  10. ↑ "Pengcheng Dai: H-index & Awards - Academic Profile". https://research.com/u/pengcheng-dai. 
  11. ↑ "Pengcheng Dai's Group". https://pdai.phys.rice.edu/about.php. 
  12. ↑ Mook, H. A.; Dai, Pengcheng; Hayden, S. M.; Aeppli, G.; Perring, T. G.; Doğan, F. (October 17, 1998). "Spin fluctuations in YBa2Cu3O6.6". Nature 395 (6702): 580–582. doi:10.1038/26931. Bibcode: 1998Natur.395..580M. https://www.nature.com/articles/26931. 
  13. ↑ Dai, Pengcheng; Mook, H. A.; Aeppli, G.; Hayden, S. M.; Doğan, F. (August 17, 2000). "Resonance as a measure of pairing correlations in the high-Tc superconductor YBa2Cu3O6.6". Nature 406 (6799): 965–968. doi:10.1038/35023094. PMID 10984044. Bibcode: 2000Natur.406..965D. https://www.nature.com/articles/35023094. 
  14. ↑ Dai, Pengcheng; Mook, H. A.; Hayden, S. M.; Aeppli, G.; Perring, T. G.; Hunt, R. D.; Doğan, F. (May 21, 1999). "The Magnetic Excitation Spectrum and Thermodynamics of High- T c Superconductors". Science 284 (5418): 1344–1347. doi:10.1126/science.284.5418.1344. PMID 10334986. Bibcode: 1999Sci...284.1344D. https://www.science.org/doi/10.1126/science.284.5418.1344. 
  15. ↑ Mook, H. A.; Dai, Pengcheng; Dogan, F.; Hunt, R. D. (April 17, 2000). "One-dimensional nature of the magnetic fluctuations in YBa2Cu 3O6.6". Nature 404 (6779): 729–731. doi:10.1038/35008005. PMID 10783878. Bibcode: 2000Natur.404..729M. https://www.nature.com/articles/35008005. 
  16. ↑ Wilson, Stephen D.; Dai, Pengcheng; Li, Shiliang; Chi, Songxue; Kang, H. J.; Lynn, J. W. (July 17, 2006). "Resonance in the electron-doped high-transition-temperature superconductor Pr0.88LaCe0.12CuO4-δ". Nature 442 (7098): 59–62. doi:10.1038/nature04857. PMID 16823448. Bibcode: 2006Natur.442...59W. https://www.nature.com/articles/nature04857. 
  17. ↑ de la Cruz, Clarina; Huang, Q.; Lynn, J. W.; Li, Jiying; Ii, W. Ratcliff; Zarestky, J. L.; Mook, H. A.; Chen, G. F. et al. (June 17, 2008). "Magnetic order close to superconductivity in the iron-based layered LaO1-xF x FeAs systems". Nature 453 (7197): 899–902. doi:10.1038/nature07057. PMID 18509333. Bibcode: 2008Natur.453..899D. https://www.nature.com/articles/nature07057. 
  18. ↑ Zhao, Jun; Huang, Q.; de la Cruz, Clarina; Li, Shiliang; Lynn, J. W.; Chen, Y.; Green, M. A.; Chen, G. F. et al. (December 17, 2008). "Structural and magnetic phase diagram of CeFeAsO1− xFx and its relation to high-temperature superconductivity". Nature Materials 7 (12): 953–959. doi:10.1038/nmat2315. PMID 18953342. Bibcode: 2008NatMa...7..953Z. https://www.nature.com/articles/nmat2315. 
  19. ↑ Zhao, Jun; Adroja, D. T.; Yao, Dao-Xin; Bewley, R.; Li, Shiliang; Wang, X. F.; Wu, G.; Chen, X. H. et al. (August 17, 2009). "Spin waves and magnetic exchange interactions in CaFe2As2". Nature Physics 5 (8): 555–560. doi:10.1038/nphys1336. Bibcode: 2009NatPh...5..555Z. https://www.nature.com/articles/nphys1336. 
  20. ↑ Chu, Jiun-Haw; Analytis, James G.; De Greve, Kristiaan; McMahon, Peter L.; Islam, Zahirul; Yamamoto, Yoshihisa; Fisher, Ian R. (2010). "In-Plane Resistivity Anisotropy in an Underdoped Iron Arsenide Superconductor". Science 329 (5993): 824–826. doi:10.1126/science.1190482. PMID 20705856. Bibcode: 2010Sci...329..824C. https://www.science.org/doi/10.1126/science.1190482. 
  21. ↑ Lu, Xingye; Park, J. T.; Zhang, Rui; Luo, Huiqian; Nevidomskyy, Andriy H.; Si, Qimiao; Dai, Pengcheng (August 8, 2014). "Nematic spin correlations in the tetragonal state of uniaxial-strained BaFe 2− x Ni x As 2". Science 345 (6197): 657–660. doi:10.1126/science.1251853. PMID 25081483. Bibcode: 2014Sci...345..657L. https://www.science.org/doi/10.1126/science.1251853. 
  22. ↑ Spin Waves in Detwinned ${\mathrm{BaFe. PMID 30141678. https://link.aps.org/doi/10.1103/PhysRevLett.121.067002. _{2}{\mathrm{As}}_{2}$|first1=Xingye|last1=Lu|first2=Daniel D.|last2=Scherer|first3=David W.|last3=Tam|first4=Wenliang|last4=Zhang|first5=Rui|last5=Zhang|first6=Huiqian|last6=Luo|first7=Leland W.|last7=Harriger|first8=H. C.|last8=Walker|first9=D. T.|last9=Adroja|first10=Brian M.|last10=Andersen|first11=Pengcheng|last11=Dai|date=August 8, 2018|journal=Physical Review Letters|volume=121|issue=6|pages=067002|via=APS|doi=10.1103/PhysRevLett.121.067002}}
  23. ↑ Chen, Tong; Chen, Youzhe; Kreisel, Andreas; Lu, Xingye; Schneidewind, Astrid; Qiu, Yiming; Park, J. T.; Perring, Toby G. et al. (July 17, 2019). "Anisotropic spin fluctuations in detwinned FeSe". Nature Materials 18 (7): 709–716. doi:10.1038/s41563-019-0369-5. PMID 31110345. Bibcode: 2019NatMa..18..709C. 
  24. ↑ Liu, Panpan; Klemm, Mason L.; Tian, Long; Lu, Xingye; Song, Yu; Tam, David W.; Schmalzl, Karin; Park, J. T. et al. (November 12, 2020). "In-plane uniaxial pressure-induced out-of-plane antiferromagnetic moment and critical fluctuations in BaFe2As2". Nature Communications 11 (1): 5728. doi:10.1038/s41467-020-19421-5. PMID 33184278. Bibcode: 2020NatCo..11.5728L. 
  25. ↑ Song, Yu; Van Dyke, John; Lum, I. K.; White, B. D.; Jang, Sooyoung; Yazici, Duygu; Shu, L.; Schneidewind, A. et al. (September 28, 2016). "Robust upward dispersion of the neutron spin resonance in the heavy fermion superconductor Ce1−xYbxCoIn5". Nature Communications 7 (1): 12774. doi:10.1038/ncomms12774. PMID 27677397. Bibcode: 2016NatCo...712774S. 
  26. ↑ Song, Yu; Wang, Weiyi; S. Van Dyke, John; Pouse, Naveen; Ran, Sheng; Yazici, Duygu; Schneidewind, A.; Čermák, Petr et al. (May 29, 2020). "Nature of the spin resonance mode in CeCoIn5". Communications Physics 3 (1): 98. doi:10.1038/s42005-020-0365-8. PMID 33655080. Bibcode: 2020CmPhy...3...98S. https://www.nature.com/articles/s42005-020-0365-8. 
  27. ↑ Song, Yu; Wang, Weiyi; Cao, Chongde; Yamani, Zahra; Xu, Yuanji; Sheng, Yutao; Löser, Wolfgang; Qiu, Yiming et al. (June 18, 2021). "High-energy magnetic excitations from heavy quasiparticles in CeCu2Si2". npj Quantum Materials 6 (1): 60. doi:10.1038/s41535-021-00358-x. Bibcode: 2021npjQM...6...60S. https://www.nature.com/articles/s41535-021-00358-x. 
  28. ↑ Duan, Chunruo; Baumbach, R. E.; Podlesnyak, Andrey; Deng, Yuhang; Moir, Camilla; Breindel, Alexander J.; Maple, M. Brian; Nica, E. M. et al. (December 23, 2021). "Resonance from antiferromagnetic spin fluctuations for superconductivity in UTe$_2$". Nature 600 (7890): 636–640. doi:10.1038/s41586-021-04151-5. PMID 34937893. Bibcode: 2021Natur.600..636D. 
  29. ↑ Duan, C.; Sasmal, K.; Maple, M. B.; Podlesnyak, A.; Zhu, J. X.; Si, Q.; Dai, P.. Incommensurate Spin Fluctuations in the Spin-Triplet Superconductor Candidate ${\mathrm{UTe. p. 237003. PMID 33337176. https://link.aps.org/doi/10.1103/PhysRevLett.125.237003. _{2}$|first1=Chunruo|last1=Duan|first2=Kalyan|last2=Sasmal|first3=M. Brian|last3=Maple|first4=Andrey|last4=Podlesnyak|first5=Jian-Xin|last5=Zhu|first6=Qimiao|last6=Si|first7=Pengcheng|last7=Dai|date=December 1, 2020|journal=Physical Review Letters|volume=125|issue=23|pages=237003|via=APS|doi=10.1103/PhysRevLett.125.237003}}
  30. ↑ "NSSA Sustained Research Prize". https://neutronscattering.org/prizes/nssa-sustained-research-prize/. 



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