Abstract
We discuss the possibility of realizing a negative refractive index inWeyl/Dirac semimetals.We consider the Maxwell equations with the plasma gap and chiral magnetic effect. By computing the dispersion relations of electromagnetic waves, we show that the refractive index becomes negative at frequencies (just) below the plasma frequency. We find that the axial anomaly, or, more specifically, the negative magnetoresistance (an electric current parallel to magnetic fields) opens a new route to realizing a negative refractive index. As an experimental implication, we compute the reflection and transmission coefficients of electromagnetic waves in a slab of Weyl/Dirac semimetals.
| Original language | English |
|---|---|
| Article number | 83I01 |
| Journal | Progress of Theoretical and Experimental Physics |
| Volume | 2018 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2018 Aug 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
A new route to negative refractive index from topological metals. / Hayata, Tomoya.
In: Progress of Theoretical and Experimental Physics, Vol. 2018, No. 8, 83I01, 01.08.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new route to negative refractive index from topological metals
AU - Hayata, Tomoya
PY - 2018/8/1
Y1 - 2018/8/1
N2 - We discuss the possibility of realizing a negative refractive index inWeyl/Dirac semimetals.We consider the Maxwell equations with the plasma gap and chiral magnetic effect. By computing the dispersion relations of electromagnetic waves, we show that the refractive index becomes negative at frequencies (just) below the plasma frequency. We find that the axial anomaly, or, more specifically, the negative magnetoresistance (an electric current parallel to magnetic fields) opens a new route to realizing a negative refractive index. As an experimental implication, we compute the reflection and transmission coefficients of electromagnetic waves in a slab of Weyl/Dirac semimetals.
AB - We discuss the possibility of realizing a negative refractive index inWeyl/Dirac semimetals.We consider the Maxwell equations with the plasma gap and chiral magnetic effect. By computing the dispersion relations of electromagnetic waves, we show that the refractive index becomes negative at frequencies (just) below the plasma frequency. We find that the axial anomaly, or, more specifically, the negative magnetoresistance (an electric current parallel to magnetic fields) opens a new route to realizing a negative refractive index. As an experimental implication, we compute the reflection and transmission coefficients of electromagnetic waves in a slab of Weyl/Dirac semimetals.
UR - http://www.scopus.com/inward/record.url?scp=85055768400&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055768400&partnerID=8YFLogxK
U2 - 10.1093/ptep/pty082
DO - 10.1093/ptep/pty082
M3 - Article
AN - SCOPUS:85055768400
VL - 2018
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
SN - 2050-3911
IS - 8
M1 - 83I01
ER -