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Title: Surface-state-dominated transport in crystals of the topological crystalline insulator In-doped Pb1-xSnxTe

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [1];  [1];  [2];  [3];  [4];  [5];  [6];  [6];  [6];  [6];  [6]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); North Univ. of China, Shanxi (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States); Princeton Univ., Princeton, NJ (United States)
  4. Princeton Univ., Princeton, NJ (United States)
  5. Univ. of Connecticut, Storrs, CT (United States)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States)

Three-dimensional topological insulators and topological crystalline insulators represent new quantum states of matter, which are predicted to have insulating bulk states and spin-momentum-locked gapless surface states. Experimentally, it has proven difficult to achieve the high bulk resistivity that would allow surface states to dominate the transport properties over a substantial temperature range. Here we report a series of indium-doped Pb1-xSnxTe compounds that manifest huge bulk resistivities together with evidence consistent with the topological character of the surface states for x ≳ 0.35, based on thickness-dependent transport studies and magnetoresistance measurements. For these bulk-insulating materials, the surface states determine the resistivity for temperatures beyond 20 K.

Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1193899
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Vol. 91 Journal Issue: 19; ISSN 1098-0121
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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