BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Strong coupling between hybrid nuclear-electron magnons and microw
 ave photons - Dr Leonid Abdurakhimov\, Microelectronics Group\, University
  of Cambridge
DTSTART:20160425T131500Z
DTEND:20160425T141500Z
UID:TALK65815@talks.cam.ac.uk
CONTACT:Teri Bartlett
DESCRIPTION:Recently\, there has been growing interest in studies of stron
 g coupling between spin systems and microwave photons due to its possible 
 application in quantum information processing. Although considerable resea
 rch has concentrated on strong coupling with electron spin ensembles\, rat
 her less attention has been paid to investigations of possibility of stron
 g light-matter interaction in nuclear spin systems. In antiferromagnetic M
 nCO3 system\, a low-frequency collective spin excitation (magnon) is the h
 ybridized oscillation of nuclear and electron spins coupled via hyperfine 
 interaction. By using a 3D split-ring resonator\, we performed microwave s
 pectroscopy measurements of MnCO3 system and observed strong coupling betw
 een hybridized nuclear-electron magnons and microwave photons [1]. We also
  carried out time-domain studies of MnCO3 system in the regime of strong c
 oupling\, and observed Rabi-like oscillations in free induction decay (FID
 ) signal with the oscillation period corresponding to the coupling rate of
  about 1 MHz. By performing spin echo measurements\, we found T2 time of h
 ybridized magnons to be about 5 µs at the temperature of 300 mK. The resu
 lts reveal a new class of spin systems\, in which strong coupling between 
 nuclear spins and photons is mediated by electron spins via hyperfine inte
 raction.\n\n[1] L.V. Abdurakhimov\, Yu.M. Bunkov\, D. Konstantinov\, PRL 1
 14\, 226402 (2015)
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Cavendish Laboratory
END:VEVENT
END:VCALENDAR