Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Zhao, Hengdi"'
The 4d-electron trimer lattice Ba4Nb1-xRu3+xO12 is believed to feature a universal heavy spinon Fermi surface that underpins both a quantum spin liquid (QSL) and an adjacent heavy-fermion strange metal (HFSM), depending on Nb content; the itinerant s
Externí odkaz:
http://arxiv.org/abs/2408.13665
Autor:
Wu, Longlong, Wang, Wei, Assefa, Tadesse A., Suzana, Ana F., Diao, Jiecheng, Zhao, Hengdi, Cao, Gang, Harder, Ross J., Cha, Wonsuk, Kisslinger, Kim, Dean, Mark P. M., Robinson, Ian K.
Publikováno v:
Physical Review B 108, L020403 (2023)
The temperature-dependent behavior of magnetic domains plays an essential role in the magnetic properties of materials, leading to widespread applications. However, experimental methods to access the three-dimensional (3D) magnetic domain structures
Externí odkaz:
http://arxiv.org/abs/2309.09091
Autor:
Carbin, Tyler, Zhang, Xinshu, Culver, Adrian B., Zhao, Hengdi, Zong, Alfred, Acharya, Rishi, Abbamonte, Cecilia J., Roy, Rahul, Cao, Gang, Kogar, Anshul
Publikováno v:
Phys. Rev. Lett. 130, 186902 (2023)
Upon intense femtosecond photo-excitation, a many-body system can undergo a phase transition through a non-equilibrium route, but understanding these pathways remains an outstanding challenge. Here, we use time-resolved second harmonic generation to
Externí odkaz:
http://arxiv.org/abs/2305.05220
Publikováno v:
Physical Review Letters 132, 226503 (2024)
We present experimental evidence that a heavy Fermi surface consisting of itinerant, charge-neutral spinons underpins both heavy-fermion-strange-metal (without f electrons) and quantum-spin-liquid states in the 4d-electron trimer lattice, Ba4Nb1-xRu3
Externí odkaz:
http://arxiv.org/abs/2305.01033
Autor:
Ye, Feng, Matsuda, Masaaki, Morgan, Zachary, Sherline, Todd, Ni, Yifei, Zhao, Hengdi, Cao, G.
Publikováno v:
Phys. Rev. B 106 L180402 (2022)
The ferrimagnetic insulator Mn3Si2Te6, which features a Curie temperature Tc at 78 K and a delicate yet consequential magnetic frustration, exhibits colossal magnetoresistance (CMR) when the magnetic field is applied along the magnetic hard axis, sur
Externí odkaz:
http://arxiv.org/abs/2209.13664
Autor:
Zhang, Yu, Ni, Yifei, Zhao, Hengdi, Hakani, Sami, Ye, Feng, DeLong, Lance, Kimchi, Itamar, Cao, Gang
Publikováno v:
Nature, October 12, 2022
Colossal magnetoresistance (CMR) is an extraordinary enhancement of the electric conductivity in the presence of a magnetic field. It is conventionally associated with a field-induced spin polarization, which drastically reduces spin scattering and t
Externí odkaz:
http://arxiv.org/abs/2209.08672
Autor:
Li, Xinwei, Ning, Honglie, Mehio, Omar, Zhao, Hengdi, Lee, Min-Cheol, Kim, Kyungwan, Nakamura, Fumihiko, Maeno, Yoshiteru, Cao, Gang, Hsieh, David
Publikováno v:
Phys. Rev. Lett. 128, 187402 (2022)
The fate of a Mott insulator under strong low frequency optical driving conditions is a fundamental problem in quantum many-body dynamics. Using ultrafast broadband optical spectroscopy, we measured the transient electronic structure and charge dynam
Externí odkaz:
http://arxiv.org/abs/2205.05172
Autor:
Zhao, Hengdi, Ni, Yifei, Hu, Bing, Selter, Sabastian, Aswartham, Saicharan, Zhang, Yu, Büchner, Bernd, Schlottmann, Pedro, Cao, Gang
Publikováno v:
Phys. Rev. B 106, L041103 (2022)
Cr2Ge2Te6 is a van der Waals ferromagnet with a Curie temperature at 66 K. Here we report a swift change in the magnetic ground state upon application of small DC electric current, a giant yet anisotropic magnetoelectric effect, and a sharp, lattice-
Externí odkaz:
http://arxiv.org/abs/2201.08509
Autor:
Sokolik, Aaron, Hakani, Sami, Roy, Susmita, Pellatz, Nicholas, Zhao, Hengdi, Cao, Gang, Kimchi, Itamar, Reznik, Dmitry
In spin-1/2 Mott insulators, non-magnetic quantum liquid phases are often argued to arise when the system shows no magnetic ordering, but identifying positive signatures of these phases or related spinon quasiparticles can be elusive. Here we use Ram
Externí odkaz:
http://arxiv.org/abs/2110.15916
Autor:
Zhao, Hengdi, Zheng, Hao, Terzic, Jasminka, Song, Wenhai, Ni, Yifei, Zhang, Yu, Schlottmann, Pedro, Cao, Gang
Publikováno v:
Phys. Rev. B 104, 121119 (2021)
Ca3Ru2O7 is a correlated and spin-orbit-coupled system with an extraordinary anisotropy. It is both interesting and unique largely because this material exhibits conflicting phenomena that are often utterly inconsistent with traditional precedents, p
Externí odkaz:
http://arxiv.org/abs/2108.02141