Nested Fermi surfaces and correlated electronic phases in hole-doped semiconductor quantum wells
| Autor: | Tommy Li, Julian Ingham, Harley D. Scammell |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Strongly Correlated Electrons (cond-mat.str-el)
Condensed Matter - Mesoscale and Nanoscale Physics 500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik Fluids & Plasmas FOS: Physical sciences Charge order Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter - Strongly Correlated Electrons Antiferromagnetism 02 Physical Sciences 03 Chemical Sciences 09 Engineering Fermi surface Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Spin-orbit coupling Stripes Renormalization group |
| DOI: | 10.1103/physrevb.105.115302 |
| Popis: | We demonstrate the existence of novel interaction effects in hole-doped semiconductor quantum wells which are connected to dramatic changes in the Fermi surface geometry occurring upon variation of the doping. We present band structure calculations showing that quantum wells formed in $p$-type cubic semiconductors develop nested Fermi surfaces at a critical hole density set by the width $d$ of the quantum well $k_F\sim \pi/d$. Nesting gives rise to competing superconducting and charge or spin density wave order, which we analyze using the perturbative renormalization group method. The correlated phases may be created or destroyed by tuning the hole density towards or away from the critical density. Our results establish $p$-type semiconductor quantum wells as a platform for novel correlated phases, which may be precisely controlled using electrostatic gating and external magnetic fields. |
| Databáze: | OpenAIRE |
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