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SUMMARY:Kagome spin ice and strange metal phases - Prof. Philipp Gegenwart
 \, Universität Augsburg
DTSTART:20260303T141500Z
DTEND:20260303T151500Z
UID:TALK245239@talks.cam.ac.uk
CONTACT:Suchitra E. Sebastian
DESCRIPTION:In the talk\, I will focus on two members of the ZrNiAl struct
 ure type with twisted Kagome magnetic layers. HoAgGe represents the first 
 crystalline realization of Kagome spin ice\, evidenced by neutron scatteri
 ng\, and displays striking fractionalized plateau states in magnetic and t
 ransport experiments [1-3]. CrNiAs is a kagome metal in which the ferromag
 netic order can be continuously suppressed under hydrostatic pressure. Rem
 arkably a broad pressure range over which strange-metal behavior persists 
 beyond the critical pressure is found contrasting with conventional quantu
 m criticality [4].\n\n[1] K. Zhao et al.: Realization of the kagome spin i
 ce state in a frustrated intermetallic compound\, Science 367\, 1218 (2020
 ).\n\n[2] K. Zhao et al.: Time-reversal-like degeneracies distinguished by
  the anomalous Hall effect in a metallic kagome ice compound\, Nat. Phys. 
 20\, 442 (2024).\n\n[3] K. Zhao et al.: Nonlinear time-reversal symmetry b
 reaking in kagome spin ice HoAgGe\, arXiv:2505.22544.\n\n[4] B. Shen et al
 .: Pressure-induced strange metal phase in a metallic kagome ferromagnet\,
  arXiv:2503.09524.
LOCATION:Orange Boardroom\, Maxwell Centre\, Cavendish Laboratory
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