Ph.D. Amit Kanigel Ph.D. Rinat Ofer MSc. Yuval Lubashevsky Ph.D. Eran Amit Ph.D. Gil Drachuck ollaborators . Bazalitski-Technion . Knizhnik-Technion . Lord-ISIS . Amato-PSI . Chmaissem-ANL . Wilds-ILL . Lemmens-Braunschweig . Razzoli & M. Shi -PSI A magnetic analog of the isotope effect in cuprates Amit Keren
14
Embed
A magnetic analog of the isotope effect in cuprates
A magnetic analog of the isotope effect in cuprates. Amit Keren. Ph.D. Amit Kanigel Ph.D. Rinat Ofer MSc . Yuval Lubashevsky Ph.D. Eran Amit Ph.D. Gil Drachuck. Collaborators G. Bazalitski -Technion A. Knizhnik -Technion J. Lord-ISIS Amato-PSI O. Chmaissem -ANL Wilds-ILL - PowerPoint PPT Presentation
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Ph.D. Amit KanigelPh.D. Rinat OferMSc. Yuval LubashevskyPh.D. Eran AmitPh.D. Gil Drachuck
CollaboratorsG. Bazalitski-TechnionA. Knizhnik-TechnionJ. Lord-ISISA. Amato-PSIO. Chmaissem-ANLB. Wilds-ILLP. Lemmens-BraunschweigE. Razzoli & M. Shi -PSI
A magnetic analog of the isotope effect in cupratesAmit Keren
What is superconductivity?
0 10 20 30 40 50 60-18-16-14-12-10-8-6-4-202
M (e
mu
10-4
)
Temperature (K)
Tc
Magnetization Resistivity
0 20 40 60 80 1000.000
0.005
0.010
0.015
R (m
Ohm
-cm
)
Temperature (K)
Tc
Superconductivity
Fermions Attraction
1/ 2cT M
BCS
Isotope effect
2Cu3Cu
2Cu3Cu ~15%
Y
BaCu
O
What are HTSC’s? Y1Ba2Cu3Oy
< , >i j
i j
H J S S
B. Serin et al., Phys. Rev. 86, 162 (1952).
C. A. Reynolds et. al., Phys. Rev. 84, 691 (1950).
E. Maxwell et al., Phys. Rev. 95, 333 (1954).
• Maximum 4% variation of Tc in Sn.• The (0,0) point is important.• The is not applicable for different materials. 1/2
cT M
The Isotope Effect
Our motivation
We would like to change J, with no other structural changes, and see the effect on Tc.
• We will know that we changed J if TN changes.• Experimentally this is difficult but not inconceivable.
Tg
T*
TN
Tc
T
P
AFM
SG
PG
SC
To make a magnetic measurement equivalent of the isotope effect.