Tuning of the collapsed tetragonal phase transition in the SrTM<sub>2</sub>P<sub>2</sub> (TM = transition metal) system
ORAL
Abstract
The tetragonal to collapsed tetragonal phase transition1 combines dramatic changes in structural, electronic, and (sometimes) magnetic states. This phase transformation can be controlled by application of hydrostatic pressure or uniaxial stress and offers the possibility of achieving shape memory behavior combined with remarkable super-elastic properties in intermetallic compounds.2 For the SrTM2P2 system, given that the collapse occurs when P-P bonding takes place across Sr plane, TM substitution is the least perturbative substitution that can be made. As part of our effort to broaden our understanding and control of this transition, we have studied the effects of transition metal substitution on SrNi2P2. Here we report on solution growth and transport measurements on single crystals of SrTM2P2 (TM = Ni, Rh, Pd, Cu) which are potential hosts for the tetragonal collapse transition. Particularly, the effects of Rh-doping on SrNi2P2 will be discussed.
1Kreyssig et al., PRB 78, 184517 (2008).
2Sypek et al., Nat. Commun. 8, 1083 (2017).
1Kreyssig et al., PRB 78, 184517 (2008).
2Sypek et al., Nat. Commun. 8, 1083 (2017).
*This work was carried out at Iowa State University and supported by Ames Laboratory, US DOE, under Contract No. DE-AC02- 07CH11358. GGL and RAR were supported by the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant No. GBMF4411.
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Presenters
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Guilherme Gorgen Lesseux
- Iowa State University and Ames Laboratory