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Journal Articles

Fine structure in the $$alpha$$ decay of $$^{223}$$U

Sun, M. D.*; Liu, Z.*; Huang, T. H.*; Zhang, W. Q.*; Andreyev, A. N.; Ding, B.*; Wang, J. G.*; Liu, X. Y.*; Lu, H. Y.*; Hou, D. S.*; et al.

Physics Letters B, 800, p.135096_1 - 135096_5, 2020/01

 Times Cited Count:1 Percentile:22.94(Astronomy & Astrophysics)

Journal Articles

Investigation of the electronic structure and lattice dynamics of the thermoelectric material Na-doped SnSe

Wu, P.*; Zhang, B.*; Peng, K. L.*; Hagiwara, Masayuki*; Ishikawa, Yoshihisa*; Kofu, Maiko; Lee, S. H.*; Kumigashira, Hiroshi*; Hu, C. S.*; Qi, Z. M.*; et al.

Physical Review B, 98(9), p.094305_1 - 094305_7, 2018/09

 Times Cited Count:3 Percentile:60.22(Materials Science, Multidisciplinary)

Using angle-resolved photoemission spectroscopy and inelastic neutron scattering, we have studied how electronic structures and lattice dynamics evolve with temperature in Na-doped SnSe.

Journal Articles

Self-learning Monte Carlo method; Continuous-time algorithm

Nagai, Yuki; Shen, H.*; Qi, Y.*; Liu, J.*; Fu, L.*

Physical Review B, 96(16), p.161102_1 - 161102_6, 2017/10

 Times Cited Count:30 Percentile:9.31(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Origin of dramatic oxygen solute strengthening effect in titanium

Yu, Q.*; Qi, L.*; Tsuru, Tomohito; Traylor, R.*; Rugg, D.*; Morris, J. W. Jr.*; Asta, M.*; Chrzan, D. C.*; Minor, A. M.*

Science, 347(6222), p.635 - 639, 2015/02

 Times Cited Count:106 Percentile:2.85(Multidisciplinary Sciences)

Given that solute atoms interact weakly with the long-range elastic fields of screw dislocations, it has long been accepted that solution hardening is only marginally effective in materials with mobile screw dislocations. This accepted wisdom has recently been questioned by first-principles calculations suggesting that solutes may interact much more strongly with the screw dislocation core. We report here the results of a combined experimental and computational study undertaken to elucidate the profound hardening effect of oxygen in pure hexagonally-close-packed structured $$alpha$$-Ti. High resolution and in situ transmission electron microscopy nanomechanical characterization establish that the strengthening is due to the strong interaction between oxygen and the core of screw dislocations that mainly glide on prismatic planes. First-principles calculations of the screw dislocation core reveal a simple crystallographic source for the oxygen-dislocation interaction that is consistent with experimental observations. The distortion of the interstitial sites at the dislocation core creates a very strong but short-range repulsion for oxygen atoms. These mechanisms effectively pin the dislocation near the oxygen interstitial. These results establish a highly effective mechanism for strengthening by interstitial solutes that, contrary to prior understanding, may be significant in many structural alloys.

Oral presentation

Self-learning continuous-time quantum Monte Carlo method

Nagai, Yuki; Shen, H.*; Qi, Y.*; Liu, J.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Self-learning continuous-time Monte Carlo method; High-speed Markov-chain Monte Carlo method with machine learning techniques

Nagai, Yuki; Shen, H.*; Qi, Y.*; Liu, J.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Self-learning Monte Carlo method

Nagai, Yuki; Shen, H.*; Qi, Y.*; Liu, J.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Bulk Fermi arcs in heavy fermion systems

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Bulk Topological Fermi arcs in heavy fermion systems

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Bulk Fermi arcs in heavy fermion systems

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Bulk Topological Fermi arcs in heavy fermion systems

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Exceptional points and Bulk Topological Fermi arcs in heavy fermion systems

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Bulk topological Fermi arcs in heavy fermion systems

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Bulk topological Fermi arcs in heavy fermion systems; Non-Hermitian topology meets DMFT

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

Oral presentation

Non-Hermitian effective Hamiltonian for low-energy quasiparticles

Nagai, Yuki; Qi, Y.*; Isobe, Hiroki*; Kozii, V.*; Fu, L.*

no journal, , 

no abstracts in English

15 (Records 1-15 displayed on this page)
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