Login

Shafayat Hossain - UCLA

→ US/Eastern
IAMM

IAMM

2641 Osprey Vista Way, Knoxville, TN 37920
Ruixing Zhang (Department of Physics and Astronomy, University of Tennessee Knoxville)
Description

https://msh-qmind.framer.website/

    • 9:00 AM → 9:30 AM
      Pick up at hotel 30m

      Travel to IAMM.

      Speaker: Ruixing Zhang (Department of Physics and Astronomy, University of Tennessee Knoxville)
    • 9:30 AM → 10:00 AM
      Research Meeting 30m 323

      323

      IAMM
      Speaker: Ruixing Zhang (Department of Physics and Astronomy, University of Tennessee Knoxville)
    • 10:00 AM → 10:20 AM
      Talk Prep 20m
    • 10:20 AM → 11:20 AM
      Unconventional quantum states in a kagome superconductor 1h 147

      147

      IAMM

      The kagome lattice offers a unique electronic landscape characterized by flat bands and van Hove singularities—features that enhance electronic correlations and drive instabilities such as superconductivity and charge density waves. As a result, kagome systems host a rich array of emergent many-body quantum phases, some exhibiting unconventional behavior. In this talk, I will present our investigation of the kagome-lattice superconductors AV₃Sb₅ (A = K, Cs), a family of materials that have garnered significant recent attention due to the presence of chiral charge order—potentially breaking time-reversal symmetry—alongside nematicity and superconductivity with an ungapped Fermi surface sheet. First, I will describe how we probed broken symmetries in the normal state using the material’s nonlinear electromagnetic response to circularly polarized light [1]. Next, I will discuss our discovery of two distinct superconducting regimes in CsV₃Sb₅, intriguingly without any clear phase transition between them [2]. These regimes exhibit sharply different characteristics: the low-temperature phase reveals a second superconducting gap and supports low-energy quasiparticles, potentially arising from a nodal gap structure. I will conclude with a discussion of the broader implications of these findings and mention our ongoing efforts to understand these kagome superconductors.

    • 11:30 AM → 12:00 PM
      Research Meeting 30m 233

      233

      IAMM
      Speaker: Wonhee Ko (University of Tennessee, Knoxville)
    • 12:00 PM → 2:00 PM
      Lunch 2h

      Ruixing Zhang, Wonhee Ko

    • 2:00 PM → 2:30 PM
      Research Meeting 30m
      Speaker: Hanno Weitering
    • 2:30 PM → 3:00 PM
      Research Meeting 30m 330

      330

      IAMM
      Speaker: Steve Johnston (University of Tennessee)
    • 3:00 PM → 3:30 PM
      Research Meeting 30m 105

      105
      Speaker: Songyang Pu
    • 3:30 PM → 4:00 PM
      Research Meeting 30m 312

      312

      IAMM
      Speaker: Yishu Wang (University of Tennessee Knoxville)
    • 4:00 PM → 5:00 PM
      Research Meeting 1h 262

      262

      IAMM
      Speaker: Ruixing Zhang (Department of Physics and Astronomy, University of Tennessee Knoxville)
    • 5:45 PM → 7:15 PM
      Dinner 1h 30m

      Ruixing Zhang, Hu Miao, Hanno Weitering