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Title: Local atomic and magnetic structure of dilute magnetic semiconductor ( Ba , K ) ( Zn , Mn ) 2 As 2

Journal Article · · Physical Review B
 [1];  [1];  [2];  [2];  [3];  [3];  [4];  [1];  [5]
  1. Columbia Univ., New York, NY (United States). Dept. of Physics
  2. Columbia Univ., New York, NY (United States). Dept. of Applied Physics and Applied Mathematics
  3. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
  4. Forschungszentrum Karlsruhe (Germany). Julich Center for Neutron Science
  5. Columbia Univ., New York, NY (United States). Dept. of Applied Physics and Applied Mathematics; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.

We studied the atomic and magnetic structure of the dilute ferromagnetic semiconductor system (Ba,K)(Zn,Mn)2As2 through atomic and magnetic pair distribution function analysis of temperature-dependent x-ray and neutron total scattering data. Furthermore, we detected a change in curvature of the temperature-dependent unit cell volume of the average tetragonal crystallographic structure at a temperature coinciding with the onset of ferromagnetic order. We also observed the existence of a well-defined local orthorhombic structure on a short length scale of ≲5Å, resulting in a rather asymmetrical local environment of the Mn and As ions. Finally, the magnetic PDF revealed ferromagnetic alignment of Mn spins along the crystallographic c axis, with robust nearest-neighbor ferromagnetic correlations that exist even above the ferromagnetic ordering temperature. Finally, we discuss these results in the context of other experiments and theoretical studies on this system.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; SC0012704
OSTI ID:
1336147
Alternate ID(s):
OSTI ID: 1319963
Report Number(s):
BNL-112629-2016-JA; PRBMDO; R&D Project: PM032; KC0202010
Journal Information:
Physical Review B, Vol. 94, Issue 9; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (7)

Single Crystal Growth and Spin Polarization Measurements of Diluted Magnetic Semiconductor (BaK)(ZnMn)2As2 journal November 2017
Li(Cd,Mn)P: a new cadmium based diluted ferromagnetic semiconductor with independent spin & charge doping journal May 2019
Out-of-plane easy-axis in thin films of diluted magnetic semiconductor Ba 1− x K x (Zn 1− y Mn y ) 2 As 2 journal April 2017
A substantial increase of Curie temperature in a new type of diluted magnetic semiconductors via effects of chemical pressure journal October 2019
Effects of high pressure on the ferromagnetism and in-plane electrical transport of (Ba 0.904 K 0.096 )(Zn 0.805 Mn 0.195 ) 2 As 2 single crystal journal May 2018
Out-of-plane easy-axis in thin films of diluted magnetic semiconductor Ba1-xKx(Zn1-yMny)2As2 preprint January 2017
A substantial increase of Curie temperature in a new type of diluted magnetic semiconductors via effects of chemical pressure text January 2019