BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-6913
DTSTART:20220428T150000Z
DTEND:20220428T160000Z
DTSTAMP:20260414T152804Z
LAST-MODIFIED:20220426T153608Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Few-layer MoTe2: an Unconventional\, Ferroelectric Superconduc
 tor\, R. G. Herb Condensed Matter Seminar\, Prof. Daniel Rhodes\, UW-M
 adison Dept. of Materials Science and Engineering
DESCRIPTION:Two dimensional materials are layered materials that may b
 e readily exfoliated down to a single atomic layer\, presenting an opp
 ortunity to noninvasively\, and efficiently\, control electrical and m
 agnetic ordering\, as well as topology. In this talk\, I discuss how t
 opology emerges from the bulk\, down to the monolayer and how the infl
 uence of an electrostatic gate allows us to identify a unique supercon
 ducting state in few-layer Td-MoTe2.  First\, I will discuss how in th
 e clean limit the superconducting transition temperature is enhanced b
 y a factor of 60x\, as compared to bulk\, in monolayer Td-MoTe2\, whil
 e still retaining a low carrier density (~1013/cm2)\, and a density of
  states that is comparable to the bulk.  I will show how the crystal s
 tructure factors into the behavior of the superconducting state under 
 external in-plane magnetic fields and how this can be used to quantify
  of the spin-orbit coupling\, an important factor for determining topo
 logy and realizing topological superconducting states.  After discussi
 on of the monolayer\, I will show that this enhancement remains in bil
 ayer MoTe2\, despite the change in symmetry. Strangely\, our results i
 ndicate that superconductivity in bilayer MoTe2 is much more tunable b
 y an electrostatic gate than that of monolayer MoTe2. Not only\, we wi
 ll show that due to the stacking of two layers as compared to one\, a 
 ferroelectric switching is allowed - demonstrating the first observati
 on of a 2D ferroelectric superconductor. These findings have profound 
 implications on 2D superconductivity and offer an avenue for future ex
 ploration into similarly structured materials. 
\n
\n
URL:https://www.physics.wisc.edu/events/?id=6913
END:VEVENT
END:VCALENDAR